Intacs microthin prescription inserts (Addition Technology. Original Article
|
|
- Branden Wade
- 5 years ago
- Views:
Transcription
1 Original Article Efficacy of Intacs Intrastromal Corneal Ring Segment Relative to Depth of Insertion Evaluated with Anterior Segment Optical Coherence Tomography Hassan Hashemi 1,2, Alireza Yazdani-Abyaneh 2, Amirhushang Beheshtnejad 2, Mahmood Jabbarvand 2, Ahmad Kheirkhah 2, Seyed Reza Ghaffary 2 ABSTRACT Aim: To evaluate the effect of implantation depth of Intacs microthin prescription inserts (Addition Technology Inc, Fremont, California) on visual and topographic outcomes in patients with post- laser-assisted in situ keratomileusis (LASIK) ectasias. Settings and Design: Retrospective, observational case series. Materials and Methods: In this case series, 16 eyes of 12 patients were evaluated. All cases were post-lasik ectasia that had undergone intrastromal corneal ring segment (ICRS) implantation. The planned insertion depth was 70% of stromal thickness using a manual dissector. At least 12 months postoperatively, all eyes underwent Visante (Carl Zeiss Meditec) AS-OCT to determine insertion depth. Cases were categorized into 3 groups based on the measured implantation depth: 40-59% thickness; 60-79% thickness; and 80% thickness. Visual, refractive and topographic outcomes were evaluated relative to implantation depth. Results: The lowest improvement in the study parameters ocurred when the implantation depth was 80%. In this group, uncorrected visual acuity (UCVA) and best spectacle corrected VA (BSCVA) improved less than 0.5 lines. Manifest refractive spherical equivalent (MRSE) and mean keratometry (Km) change was less than 0.5 diopters (D). The greatest improvements were observed with implantation depth of 60-79% where UCVA and BSCVA increased by 4.5 and 2.5 lines respectively, and MRSE and Km changed by approximately 2.00 D. Less improvement was found when ICRS were implanted between 40-59% of stromal thickness. Conclusion: Implantation of ICRS greater than 80% of stromal thickness may have no effect on visual and topographic status. Access this article online Website: DOI: / Quick Response Code: Key words: Intacs implantation depth, Laser-assisted in situ Keratomileusis, optical coherence tomography, post lasik Ectasia, visual Acuity INTRODUCTION Intacs microthin prescription inserts (Addition Technology Inc, Fermont, California) were first developed for the correction of myopia from -1.0 to -3.0 diopters (D). 1,2 These intrastromal corneal ring segments (ICRS) are a 150 degree polymethyl methacrylate segment, hexagonal in cross-section, which are inserted deep into the stroma. ICRS implanation stretches the cornea peripherally resulting in central corneal flattening. 3,4 Colin et al. 5 were the first to implant ICRS for keratoconus. Subsequently, several authors reported on ICRS implantation for keratoconus, 6-23 post-lasik ectasia and pellucid marginal degeneration However, to the best of our knowledge, there are no reports on the effect of insertion or implantation depth 1 Noor Ophthalmology Research Center, Noor Eye Hospital, Tehran, Iran, 2 Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran Corresponding Author: Dr. Hassan Hashemi, Noor Eye Hospital, No 96, Esfandiar Blvd., Vali asr Ave. Tehran, , Iran. hhashemi@noorvision.com 234 Middle East African Journal of Ophthalmology, Volume 20, Number 3, July - September 2013
2 of ICRS on the outcome. In this study we evaluate the outcome of Intacs ICRS implantation relative to the insertion depth as measured with anterior segment optical coherent tomography (AS-OCT). MATERIALS AND METHODS In this retrospective study, we reviewed the records of all patients who underwent Intacs ICRS implantation for post-lasik ectasia between 2006 and To be included all patients had to have greater than 1 year postoperative follow up. The Institutional Review Board of the Eye Research Center, Farabi Eye Hospital approved this study. All surgeries were performed by an experienced surgeon (H.H). In all cases, 0.45 mm thick segments were implanted. A single segment was implanted for decentered cones, and double segments were implanted for central cones. Surgeries were performed with tetracaine as topical anesthesic. First, the geometric center of the cornea was marked with a blunt Sinskey hook. Then, using a circular marker, the 7.0 mm optical zone and the incision position in the flat meridian were marked. A 0.9 mm vertical incision was made with a calibrated diamond knife to a depth of 70% of the corneal thickness at the insertion location as measured preoperatively using the Pentacam rotating scheimflug camera (Oculus Gmbh, Wetzlar, Germany). After inspecting whether the depth of incision was adequate, a pocketing hook was applied to the base of the incision to create a pocket on either side taking care they were made to an equal level. After placing the vacuum centering guide, the corneal separator was inserted, and the clockwise and counterclockwise dissections were made. Next, the ICRS segment was manually introduced through the incision into the tunnel and advanced until the end was approximately 1.5mm from the incision. Finally, the incision was closed with a 10-0 nylon suture. After surgery, antibiotic and steroid eye-drops four times a day were prescribed, and the suture was removed after six weeks. Patient evaluation The following preoperative and postoperative data were evaluated: uncorrected visual acuity (UCVA); best spectacle corrected visual acuity (BSCVA); manifest refractive spherical equivalent (MRSE); refractive cylinder (RC); steep keratometry reading (K1), flat keratometry reading (K2), mean keratometry (K m =[K1+K2]/2), topographic cylinder (TC=K1-K2) from the EyeSys Corneal Analysis System (EyeSys Technologies, Houston, Tx, USA). UCVA and BSCVA were converted to logmar for statistical analysis. AS-OCT was performed postoperatively using the Visante (Carl Zeiss Meditec, Jena, Germany) to determine the depth at which Intacs segments were implanted into the cornea. The depth of implanted segment was measured at the middle of its length. The stromal thickness was measured over (S1) and under (S2) the segment. Intacs depth was calculated as S1/(S1+S2), and the result was multiplied by 100 to determine the percent of stromal depth at which the ICRS had been inserted. If the two segments had been implanted, then the results of superior and inferior segments were averaged. The cases were categorized into 3 groups based on the measured depth of implantation: 40-59%, 60-79%, and 80% thickness depths. There were no cases with less than 40% implantation depth. Visual, refractive, and topographic outcomes were compared among the three groups. Statistical analysis Data were analyzed with the Statistical Package for Social Sciences software for windows (version 16.0, IBM Inc., Armonk, NY, USA). The Wilcoxon rank-sum test was used to compare preoperative and postoperative values of UCVA, BSCVA, MRSE, RC, K1, K2, K m, and TC. A p value less than 0.05 were statistically significant. RESULTS Sixteen eyes of 12 patients were evaluated. The mean age of the patients was ± 9.2 years (range, 25 years to 54 years) and the male/female and right/left eye ratios were 1:1. Mean follow up time was 23.8 ± 9.11 m (range, 12 m to 24 m). Based on AS-OCT measurements, we had 3 cases (18.8%) in the 40-59% thickness group, 9 cases (56.2%) in the 60-79% thickness, group and 4 cases (25.0%) in the 80% stromal thickness group. Results of the preoperative and last postoperative visits are summarized in Table 1. Table 1: Mean (± standard deviation) values and changes of visual, refractive, and topographic variables before and after surgery in the entire study cohort Preoperative Postoperative Change p value UCVA (logmar) 0.93 (0.43) 0.61 (0.40) 0.32 (0.42) BSCVA (logmar) 0.38 (0.33) 0.21 (0.18) 0.17 (0.25) MRSE (diopter) 4.25 (2.75) 2.67 (1.69) 1.57 (2.43) RC (diopter) 2.73 (1.90) 2.53 (1.11) 0.20 (1.63) K m (diopter) (4.05) (3.90) 1.63 (1.94) TC (diopter) 2.79 (1.76) 2.47 (1.44) 0.32 (1.55) UCVA: Uncorrected Visual Acuity; BSCVA: Best Spectacle Corrected Visual Acuity; MRSE: Manifest Refractive Spherical Equivalent; RC: Refractive Cylinder; K m : mean keratometry; TC: Topographic Cylinder Middle East African Journal of Ophthalmology, Volume 20, Number 3, July - September
3 Table 2: Mean (±standard deviation) change (preoperative versus postoperative) in visual, refractive, and topographic variables relative to the depth of Intacs insertion Intacs depth 40-59% 60-79% 80-99% Total UCVA (logmar) 0.30 (0.43) 0.46 (0.46) 0.02 (0.09) 0.32 (0.42) BSCVA (logmar) 0.11 (0.20) 0.25 (0.30) 0.02 (0.17) 0.17 (0.25) MRSE (diopter) 1.50 (0.75) 2.11 (3.11) 0.43 (0.82) 1.57 (2.43) Km (diopter) 1.87 (0.67) 2.08 (2.40) 0.43 (0.71) 1.63 (1.94) RC (diopter) (1.52) 0.86 (1.81) (0.14) 0.20 (1.63) TC (diopter) (0.64) 0.68 (1.94) 0.32 (0.35) 0.32 (1.55) UCVA: Uncorrected Visual Acuity; BSCVA: Best Spectacle Corrected Visual Acuity; MRSE: Manifest Refractive Spherical Equivalent; RC: Refractive Cylinder; Km: mean keratometry; TC: Topographic Cylinder a b Figure 1: Preoperative (a) and postoperative (b) topography of a patient right eye with post-lasik ectasia that was implanted with a single intrastromal corneal ring segment Refractive and topographic outcome Overall, MRSE and K m decreased by 1.57 ± 2.43 D and 1.6 ± 1.94 D respectively (p <0.05). The outcome was best when the ICRS were implanted to 60-79% of the stromal thickness; MRSE and K m change was 2.11 ± 3.11 D and 2.08 ± 2.40 D, respectively. When the ICRS were implanted into 80-99% of stromal depth, they had little to no effect [Table 2]. RC and TC did not show clinically or statistically significant changes as a result of surgery; overall RC and TC changes were 0.20 ±1.6 3 D and 0.32 ± 0.32 D, respectively (p >0.05, both cases). Astigmatism did not show clinically significant changes after ICRS implantation relative to depth of implantation (p >0.05; Table 2). Figure 2: Anterior segment optical coherence tomography of the right eye Visual outcome Overall, UCVA changed by 0.32 ± 0.42 logmar which is approximately a gain of 3 Snellen lines. BSCVA increased by 0.17 ± 0.25, which correlates a gain of 1.5 Snellen lines. Best outcomes were observed in the 60-79% thickness group. Table 2 presents the visual outcomes relative to insertion depth. DISCUSSION Several authors have demonstrated that ICRS implantation in post-lasik ectasia can improve UCVA and BCVA by approximately 70% However, to the best of our knowledge, there are no reports evaluating the effect of implantation depth in the corneal stroma on the postoperative outcome after ICRS. 236 Middle East African Journal of Ophthalmology, Volume 20, Number 3, July - September 2013
4 a Figure 3: Preoperative (a) and postoperative (b) topography of the same patient left eye b CONCLUSION The corneal stromal depth at which ICRS are implanted may be an important determinant of visual and topographic outcomes after surgery. Implanting ICRS too deep in the stroma (deeper than 80% stromal depth), may have no effect on the corneal curvature. The best stromal depth is 60-79%, and insertion in the stromal depth of 40-59% may have a lower effect. REFERENCES Figure 4: Anterior segment optical coherence tomography of the left eye. As demonstrated in Table 2, UCVA, BSCVA, MRSE, and Km improved most significantly when the ICRS were implanted at 60-79% thickness, but there was little or no effect when the ICRS was implanted deeper than 80%. Results in the 40-59% thickness group were not as favorable as the 60-79% thickness group. Figure 1 shows the preoperative and postoperative topography of an eye with post-lasik ectasia treated with a single ICRS inferiorly. AS-OCT showed a depth of 61% of stromal thickness [Figure 2]. Some steepening right above the Intacs that might lead to central flattening was observed. Figure 3 shows the topography of the same patient s left eye which underwent implantation of a single ICRS inferiorly. However, this segment was inserted at 83% thickness [Figure 4]. No curvature change occurred over the ICRS and thus, no central flattening was expected. Corneal topography at 24 months postoperatively demonstrated no significant changes in keratometric power. 1. Schanzlin DJ, Asbell PA, Burris TE, Durrie DS. The intrastromal corneal ring segments; phase II results for the correction of myopia. Ophthalmology 1997;104: Burris TE. Intrastromal corneal ring technology: Results and indications. Curr Opin Ophthalmol 1998;9: Burris TE, Ayer CT, Evensen DA, Davenport JM. Effects of intrastromal corneal ring size and thickness on corneal flattening in human eyes. Refract Corneal Surg 1991;7: Burris TE, Baker PC, Ayer CT, Loomas BE, Mathis ML, Silvestrini TA. Flattening of central corneal curvature with intrastromal corneal rings of increasing thickness: An eyebank eye study. J Cataract Refract Surg 1993;19 Suppl: Colin J, Cochener B, Savary G, Malet F. Correcting keratoconus with intracorneal rings. J Cataract Refract Surg 2000;26: Shetty R, Kurian M, Anand D, Mhaske P, Narayana KM, Shetty BK. Intacs in advanced keratoconus. Cornea 2008;27: Ertan A, Ozkilic E. Effect of age on outcomes in patients with keratoconus treated by Intacs using a femtosecond laser. J Refract Surg 2008;24: Ertan A, Kamburoglu G. Intacs implantation using femtosecond laser for management of keratoconus: Comparison of 306 cases in different stages. J Cataract Refract Surg 2008;34: Shabayek MH, Alió JL. Intrastromal corneal ring segment implantation by femtosecond laser for keratoconus correction. Ophthalmology 2007;114: Zare MA, Hashemi H, Salari MR. Intracorneal ring segment implantation for the management of keratoconus: Safety and efficacy. J Cataract Refract Surg 2007;33: Middle East African Journal of Ophthalmology, Volume 20, Number 3, July - September
5 11. Kymionis GD, Siganos CS, Tsiklis NS, Anastasakis A, Yoo SH, Pallikaris AI, et al. Long-term follow-up of Intacs in keratoconus. Am J Ophthalmol 2007;143: Alió JL, Shabayek MH, Artola A. Intracorneal ring segments for keratoconus correction: Long-term follow-up. J Cataract Refract Surg 2006;32: Alió JL, Shabayek MH, Belda JI, Correas P, Diez Feijoo E. Analysis of results related to good and bad outcomes of Intacs implantation for keratoconus correction. J Cataract Refract Surg 2006;32: Ertan A, Kamburoglu G, Bahadir M. Intacs insertion with the femtosecond laser for the management of keratoconus. Oneyear results. J Cataract Refract Surg 2006;32: Colin J. European clinical evaluation: Use of Intacs for the treatment of keratoconus. J Cataract Refract Surg 2006;32: Kanellopoulos AJ, Pe LH, Perry HD, Donnenfeld ED. Modified intracorneal ring segment implantations (Intacs) for the management of moderate to advanced keratoconus. Efficacy and complications. Cornea 2006;25: Hellstedt T, Mäkelä J, Uusitalo R, Emre S, Uusitalo R. Treating keratoconus with Intacs corneal ring segments. J Refract Surg 2005;21: Kwitko S, Severo NS. Ferrara intracorneal ring segments for keratoconus. J Cataract Refract Surg 2004;30: Miranda D, Sartori M, Francesconi C, Allemann N, Ferrara P, Campos M. Ferrara intrastromal corneal ring segments for severe keratoconus. J Refract Surg 2003;19: Siganos CS, Kymionis GD, Kartakis N, Theodorakis MA, Astyrakakis N, Pallikaris IG. Management of keratoconus with Intacs. Am J Ophthalmol 2003;135: Boxer Wachler BS, Chandra NS, Chou B, Korn TS, Nepomuceno R, Christie JP. Intacs for keratoconus. Ophthalmology 2003;110: Ruckhofer J, Stoiber J, Twa MD, Grabner G. Correction of astigmatism with short arc-length intrastromal corneal ring segments. Ophthalmology 2003;110: Colin J, Cochener B, Savary G, Malet F, Holmes- Higgin D. Intacs inserts for treating keratoconus. One year results. Ophthalmology 2001;108: Carrasquillo KG, Rand J, Talamo JH. Intacs for keratoconus and post-lasik ectasia: Mechanical versus femtosecond laserassisted channel creation. Cornea 2007;26: Uceda-Montanes A, Toma s JD, Alio JL. Correction of severe ectasia after LASIK with intracorneal ring segments. J Refract Surg 2008;24: Kymionis GD, Tsiklis NS, Pallikaris AI, Kounis G, Diakonis VF, Astyrakakis N, et al. Long-term follow-up of Intacs for post- LASIK corneal ectasia. Ophthalmology 2006;113: Sharma M, Boxer Wachler BS. Comparison of single-segment and double-segment Intacs for keratoconus and post-lasik ectasia. Am J Ophthalmol 2006;141: Polkroy R, Levinger S, Hirsh A. Single Intacs segment for postlaser in situ keratomileusis keratectasia. J Cataract Refract Surg 2004;30: Gu ell JL, Velasco F, Sa nchez SI, Gris O, Garcia-Rojas M. Intracorneal ring segments after laser in situ keratomileusis. J Refract Surg 2004;20: Kymionis GD, Siganos CS, Kounis G, Astyrakakis N, Kalyvianaki MI, Pallikaris IG. Management of post-lasik corneal ectasia with Intacs inserts; One-year results. Arch Ophthalmol 2003;121: Siganos CS, Kymionis GD, Astyrakakis N, Pallikaris IG. Management of corneal ectasia after laser in situ keratomileusis with INTACS. J Refract Surg 2002;18: Lovisolo CF, Fleming JF. Intracorneal ring segments for iatrogenic keratectasia after laser in situ keratomileusis or photorefractive keratectomy. J Refract Surg 2002;18: Alio JL, Salem TF, Artola A, Osman AA. Intracorneal rings to correct corneal ectasia after laser in situ keratomileusis. J Cataract Refract Surg 2002;28: Piñero DP, Alio JL, Uceda-Montanes A, El Kady B, Pascual I. Intracorneal Ring Segment Implantation in Corneas with Post- Laser In Situ Keratomileusis Keratectasia. Ophthalmology 2009;116: Piñero DP, Alió JL, El Kady B, Pascual I. Corneal aberrometric and refractive performance of 2 intrastromal corneal ring segment models in early and moderate ectatic disease. J Cataract Refract Surg 2010;36: Ertan A, Bahadir M. Management of superior pellucid marginal degeneration with a single intracorneal ring segment using femtosecond laser. J Refract Surg 2007;23: Ertan A, Bahadir M. Intrastromal ring segment insertion using a femtosecond laser to correct pellucid marginal corneal degeneration. J Cataract Refract Surg 2006;32: Mularoni A, Torreggiani A, Di Biase A, Laffi GL, Tassinari G. Conservative treatment of early and moderate pellucid marginal degeneration: A new refractive approach with intracorneal rings. Ophthalmology 2005;112: Barbara A, Shehadeh-Masha our R, Zvi R, Garzozi HJ. Management of pellucid marginal degeneration with intracorneal ring segments. J Refract Surg 2005;21: Akaishi L, Tzelikis PF, Raber IM. Ferrara intracorneal ring implantation and cataract surgery for the correction of pellucid marginal corneal degeneration. J Cataract Refract Surg 2004;30: Kymionis GD, Aslanides IM, Siganos CS, Pallikaris IG. Intacs for early pellucid marginal degeneration. J Cataract Refract Surg 2004;30: Rodriguez-Prats J, Galal A, Garcia-Lledo M, De la Hoz F, Alió JL. Intracorneal rings for the correction of pellucid marginal degeneration. J Cataract Refract Surg 2003;29: Cite this article as: Hashemi H, Yazdani-Abyaneh A, Beheshtnejad A, Jabbarvand M, Kheirkhah A, Ghaffary SR. Efficacy of Intacs Intrastromal Corneal Ring Segment Relative to Depth of Insertion Evaluated with Anterior Segment Optical Coherence Tomography. Middle East Afr J Ophthalmol 2013;20: Source of Support: Nil, Conflict of Interest: None declared. 238 Middle East African Journal of Ophthalmology, Volume 20, Number 3, July - September 2013
Effects of Intracorneal Ring Segment on Corneal Biomechanics in Keratoconic Eyes. Abstract
Effects of Intracorneal Ring Segment on Corneal Biomechanics in Keratoconic Eyes Javad Amoozadeh, MD 1 Nima Mirzaee Rad, MD 2 Amir Houshang Beheshtnejad, MD 3 Ahmad Kheirkhah, MD 1 Hassan Hashemi, MD 4,5
More informationCommentary on the Outcomes of IO Weakening for IOOA. Birdshot Retinochoroidopathy Diabetes and Retinal Vascular Dysfunction
J u l y 2 0 1 4 V o l u m e 9 N u m b e r 3 ISSN: 2008-2010; eissn: 2008-322X Editorial Original Articles Review Articles Perspective Case Reports Photo Essay News Surgical Technique Commentary on the
More informationCLINICAL SCIENCES. Management of Post-LASIK Corneal Ectasia With Intacs Inserts
Management of Post-LASIK Corneal Ectasia With Intacs Inserts One-Year Results CLINICAL SCIENCES George D. Kymionis, MD, PhD; Charalambos S. Siganos, MD, PhD; George Kounis, BSc; Nikolaos Astyrakakis, OD;
More informationManagement of Unpredictable Post-PRK Corneal Ectasia with Intacs Implantation
Management of Unpredictable Post-PRK Corneal Ectasia with Intacs Implantation Mohammad Naser Hashemian, MD 1 Mahdi AliZadeh, MD 2 Hassan Hashemi, MD 1,3 Firoozeh Rahimi, MD 4 Abstract Purpose: To present
More informationImplantation of Intrastromal Corneal Ring Segments
Applies to all products administered or underwritten by Blue Cross and Blue Shield of Louisiana and its subsidiary, HMO Louisiana, Inc.(collectively referred to as the Company ), unless otherwise provided
More informationKeratoconus is a bilateral, noninflammatory, progressive
CLINICAL SCIENCE KeraRing Intrastromal Corneal Ring Segments for Correction of Keratoconus Almutez M. Gharaibeh, MD,* Sana M. Muhsen, MD,* Ilham B. AbuKhader, RN, MPH, Osama H. Ababneh, MD,* Mohammed A.
More informationRefractive and Visual Outcomes After Intacs vs Ferrara Intrastromal Corneal Ring Segment Implantation for Keratoconus: A Comparative Study
Refractive and Visual Outcomes After Intacs vs Ferrara Intrastromal Corneal Ring Segment Implantation for Keratoconus: A Comparative Study Vedat Kaya, MD; Canan Asli Utine, MD, MSc; Sezen Harmanci Karakus,
More informationIntracorneal Ring Segment Implantation in Corneas with Post-Laser In Situ Keratomileusis Keratectasia
Intracorneal Ring Segment Implantation in Corneas with Post-Laser In Situ Keratomileusis Keratectasia David P. Piñero, MSc, 1,2 Jorge L. Alio, MD, PhD, 1,3 Antonio Uceda-Montanes, MD, 4,5 Bassam El Kady,
More informationCorneal Hydrops Secondary to Intrastromal Corneal Ring Intrusion into the Anterior Chamber 7 Years after Implantation: A Case Report
Ophthalmol Ther (2017) 6:373 379 DOI 10.1007/s40123-017-0105-7 CASE REPORT Corneal Hydrops Secondary to Intrastromal Corneal Ring Intrusion into the Anterior Chamber 7 Years after Implantation: A Case
More informationKeratoconus is described in the literature as a corneal
Cornea Intracorneal Ring Segment in Keratoconus: A Model to Predict Visual Changes Induced by the Surgery Pablo Peña-García, 1 Alfredo Vega-Estrada, 1,2 Rafael I. Barraquer, 3,4 Neus Burguera-Giménez,
More informationFour-year Follow-up of Intrastraomal Corneal Ring Segments in Patients with Keratoconus
ARTICLE Four-year Follow-up of Intrastraomal Corneal Ring Segments in Patients with Keratoconus Jose L. Güell, MD 1,2,3, Merce Morral, MD 1,4, Cecilia Salinas, MD 1, Daniel Elies, MD 1, Oscar Gris, MD
More informationIntrastromal corneal ring
Intrastromal corneal ring Kyriakidou Nantia M.D. Diathlasis Day Care Unit Scienti1ic Workshop of Diathlasis Day Care Unit 18-19 November, 2016 The Met Hotel Thessaloniki, Greece DAY CARE UNIT DIATHLASIS,
More informationCorneal Neovascularization and Lipid Keratopathy after Intacs SK in Keratoconus
10.5005/jp-journals-10025-1066 CASE REPORT IJKECD Corneal Neovascularization and Lipid Keratopathy after Intacs SK in Keratoconus Corneal Neovascularization and Lipid Keratopathy after Intacs SK in Keratoconus
More informationSimultaneous Topography-guided Surface Ablation with Collagen Cross-linking for Keratoconus
IJKECD Case series Simultaneous Topography-guided Surface Ablation with Collagen 10.5005/jp-journals-10025-1124 Cross-linking for Keratoconus Simultaneous Topography-guided Surface Ablation with Collagen
More informationPredictability of Tunnel Depth for Intrastromal Corneal Ring Segments Implantation Between Manual and Femtosecond Laser Techniques
ORIGINAL ARTICLE Predictability of Tunnel Depth for Intrastromal Corneal Ring Segments Implantation Between Manual and Femtosecond Laser Techniques Tiago Monteiro, MD, FEBO; José F. Alfonso, PhD; Nuno
More informationMethicillin-Resistant Staphylococcus aureus Acute Keratitis After Intracorneal Ring Segment Implantation
Ophthalmol Ther (2017) 6:367 371 DOI 10.1007/s40123-017-0103-9 CASE REPORT Methicillin-Resistant Staphylococcus aureus Acute Keratitis After Intracorneal Ring Segment Implantation Gonzalo García de Oteyza.
More informationDescription of iatrogenic corneal ectasia in patients without traditional risk factors
ARTICLE Description of iatrogenic corneal ectasia in patients without traditional risk factors Julio Ortega-Usobiaga, MD, PhD 1 ; Rosario Cobo-Soriano, MD, PhD 1 ; Fernando Llovet-Osuna, MD, PhD 1 ; Stephan
More informationPersonal data. Curriculum Vitae. Experience. Date of birth 18 December 1969
1 Curriculum Vitae Dr. Sophia I. Panagopoulou University of Crete Medical School, IVO 71003 Heraklion Greece Phone: +302810394645 FAX: +302810394653 e-mail: spanagop@med.uoc.gr Personal data Date of birth
More informationPOST-LASIK ECTASIA MANAGEMENT
POST-LASIK ECTASIA MANAGEMENT A. John Kanellopoulos MD 1,2 1: Laservision.gr Clinical & Research Eye Institute, Athens, Greece 2: NYU Medical School Department of Ophthalmology, NY, NY Financial interests:
More informationIntacs Intracorneal Ring Segments Complications in Patients Suffering from Keratoconus
10.5005/jp-journals-10025-1064 REVIEW ARTICLE IJKECD Intacs Intracorneal Ring Segments Complications in Patients Suffering from Keratoconus Intacs Intracorneal Ring Segments Complications in Patients Suffering
More informationComparison of Corneal and Anterior Chamber Parameters following Myopic laser in situ keratomileusis and photorefractive keratectomy by
Comparison of Corneal and Anterior Chamber Parameters following Myopic laser in situ keratomileusis and photorefractive keratectomy by Pentacam as A New Imaging Technique Mohammad Ali Zare, MD 1 Hassan
More informationPhotochemical corneal collagen cross-linkage using riboflavin and ultraviolet A for keratoconus and keratectasia
Photochemical corneal collagen cross-linkage using riboflavin and ultraviolet A for keratoconus and keratectasia Issued: September 2013 guidance.nice.org.uk/ipg466 NICE has accredited the process used
More informationInterventional procedures guidance Published: 25 September 2013 nice.org.uk/guidance/ipg466
Photochemical corneal collagen cross-linkage using riboflavin and ultraviolet A for keratoconus and keratectasia Interventional procedures guidance Published: 25 September 2013 nice.org.uk/guidance/ipg466
More informationSimultaneous Conventional Photorefractive Keratectomy and Corneal Collagen Cross-linking for Pellucid Marginal Corneal Degeneration
ORIGINAL ARTICLE Simultaneous Conventional Photorefractive Keratectomy and Corneal Collagen Cross-linking for Pellucid Marginal Corneal Degeneration George D. Kymionis, MD, PhD; Michael A. Grentzelos,
More informationOur experience with Athens protocol - simultaneous topo-guided photorefractive keratectomy followed by corneal collagen cross linking for keratoconus
International Journal of Research in Medical Sciences Shah S et al. Int J Res Med Sci. 2016 Jul;4(7):2639-2644 www.msjonline.org pissn 2320-6071 eissn 2320-6012 Research Article DOI: http://dx.doi.org/10.18203/2320-6012.ijrms20161924
More informationRecent concerns regarding the depth of tissue ablation with
Volume Estimation of Excimer Laser Tissue Ablation for Correction of Spherical Myopia and Hyperopia Damien Gatinel, 1 Thanh Hoang-Xuan, 1 and Dimitri T. Azar 1,2 PURPOSE. To determine the theoretical volumes
More informationTransepithelial cross-linking
Transepithelial cross-linking Collection of scientific studies PROCEDURE FOR TRANSEPITHELIAL CROSS-LINKING (TE-CXL) Instill one drop of pilocarpine 2% 30 minutes before UV-A treatment. Place the patient
More informationComparison between Pentacam HR and Orbscan II after Hyperopic Photorefractive Keratectomy
Original Article Comparison between Pentacam HR and Orbscan II after Hyperopic Photorefractive Keratectomy Mahmoud Jabbarvand 1, MD; Farshad Askarizadeh 2, PhD; Mohamad Reza Sedaghat 3, MD Hadi Ghadimi
More informationFemtosecond-assisted intrastromal corneal ring implantation for keratoconus treatment: a comparison with crosslinking combination
Original Article Femtosecond-assisted intrastromal corneal ring implantation for keratoconus treatment: a comparison with crosslinking combination Implante de anel intraestromal com laser de femtosegundo
More informationLASIK has been the primary type of corneal refractive surgery
Cornea Higher-Order Aberrations of Anterior and Posterior Corneal Surfaces in Patients With Keratectasia After LASIK Naoyuki Maeda, 1 Tomoya Nakagawa, 1 Ryo Kosaki, 1 Shizuka Koh, 1 Makoto Saika, 2 Takashi
More informationArtisan Phakic Intraocular Lens for the Correction of Severe Myopic Astigmatism
Artisan Phakic Intraocular Lens for the Correction of Severe Myopic Astigmatism Hassan Hashemi, MD 1,2 Mansour Taherzadeh, MD 1 Mehdi Khabazkhoob, MSc 1 Abstract Purpose: To determine and evaluate the
More informationPhakic posterior chamber intraocular collamer lenses in keratoconus Running title: Phakic posterior chamber intraocular collamer lenses
Phakic posterior chamber intraocular collamer lenses in keratoconus Running title: Phakic posterior chamber intraocular collamer lenses Afshin Lotfi Sadigh 1, Mohamad Reza Niyousha 1, Abdollah Shenasi
More informationComparison of Intraocular Lens Power Calculation Methods Following Myopic Laser Refractive Surgery: New Options Using a Rotating Scheimpflug Camera
pissn: 1011-8942 eissn: 2092-9382 Korean J Ophthalmol 2018;32(6):497-505 https://doi.org/10.3341/kjo.2018.0008 Original Article Comparison of Intraocular Lens Power Calculation Methods Following Myopic
More informationCorneal Collagen Crosslinking for Post-LASIK Ectasia: An Australian Study. 18 rigid gas permeable contact lenses, and intrastromal corneal
original clinical study Corneal Collagen Crosslinking for ost-lasik Ectasia: An Australian Study Jessica Y. Tong, BMed, MD,* Deepa Viswanathan, hd, FRCS,* Christopher Hodge, hd, BAppSc(Orth), Gerard Sutton,
More informationSimultaneous Topography-Guided PRK with CXL Versus CXL Alone in Kconus: Prospective Comparative Study
This paper was conferred with the AIOS CORNEA AWARD for the BEST PAPER of CORNEA Sessions. This paper was also judged the BEST PAPER of CORNEA - II Session. Simultaneous Topography-Guided PRK with CXL
More informationAuthor s Affiliation. Original Article. Visual outcomes after LASIK (laser-assisted in-situ keratomileusis) for various refractive errors.
Original Article Visual outcomes after LASIK (laser-assisted in-situ keratomileusis) for various refractive errors. Author s Affiliation Sobia Tufail Imran Ahmad Asad Aslam Khan Correspondence Author:
More informationFour-year Postoperative Results of the US ALLEGRETTO WAVE Clinical Trial for the Treatment of Hyperopia
Four-year Postoperative Results of the US ALLEGRETTO WAVE Clinical Trial for the Treatment of Hyperopia Guy M. Kezirian, MD, FACS; Charles R. Moore, MD, FICS; Karl G. Stonecipher, MD; SurgiVision Consultants
More informationVisual outcomes of Femto-LASIK for correction of residual refractive error after corneal graft
Graefes Arch Clin Exp Ophthalmol (2013) 251:2601 2608 DOI 10.1007/s00417-013-2458-5 REFRACTIVE SURGERY Visual outcomes of Femto-LASIK for correction of residual refractive error after corneal graft Mohammad
More informationThe Egyptian Journal of Hospital Medicine (October 2018) Vol. 73 (9), Page
The Egyptian Journal of Hospital Medicine (October 2018) Vol. 73 (9), Page 7574-7579 Biomechanical Corneal Changes Post LASIK with Mechanical Microkeratome Flap versus Femtosecond Flap Department of Ophthalmology,
More informationContact lens fitting over intrastromal corneal rings in a keratoconic patient
Contact lens fitting over intrastromal corneal rings in a keratoconic patient Larisia Hladun, O.D.* and Michael Harris, O.D., J.D., M.S. University of California at Berkeley. College of Optometry. Berkeley.
More informationComparison of Corneal Power and Intraocular Lens Power Calculation Methods after LASIK for Myopia
Comparison of Corneal Power and Intraocular Lens Power Calculation Methods after LASIK for Myopia Seyed Mohammad Reza Taheri, MD 1 Azita Kheiltash, MD, MPH 2 Hassan Hashemi, MD 1,3 Abstract Purpose: To
More informationKeratoconus Clinic. Optometric Co-management Opportunities
Keratoconus Clinic Optometric Co-management Opportunities The Bochner Eye Institute established the first Keratoconus Clinic in Canada in 2008. The consultation and advanced imaging are OHIP covered. All
More informationCorneal Remodeling. Medical Coverage Policy. Related Coverage Resources. Table of Contents. Coverage Policy. Corneal Crosslinking
Medical Coverage Policy Effective Date... 8/15/2018 Next Review Date... 8/15/2019 Coverage Policy Number... 0141 Corneal Remodeling Table of Contents Coverage Policy... 1 Overview... 3 General Background...
More informationFor approximately two decades photorefractive keratectomy. Seven-Year Changes in Corneal Power and Aberrations after PRK or LASIK.
Cornea Seven-Year Changes in Corneal Power and Aberrations after PRK or LASIK Anders Ivarsen and Jesper Hjortdal PURPOSE. To examine long-term changes in corneal power and aberrations in myopic patients
More informationLaser in Situ Keratomileusis versus Laser Assisted Subepithelial Keratectomy for the Correction of Low to Moderate Myopia and Astigmatism
Laser in Situ Keratomileusis versus Laser Assisted Subepithelial Keratectomy for the Correction of Low to Moderate Myopia and Astigmatism Seyed Javad Hashemian, MD 1 Hossein Aghaei, MD 2 Alireza Foroutan,
More informationResearch Article Risk Assessment for Corneal Ectasia following Photorefractive Keratectomy
Hindawi Journal of Ophthalmology Volume 17, Article ID 24348, pages https://doi.org/.1155/17/24348 Research Article Risk Assessment for Corneal Ectasia following Photorefractive Keratectomy Nir Sorkin,
More information펨토초레이저와미세각막절삭기를이용한근시교정수술에서임상성적비교
펨토초레이저와미세각막절삭기를이용한근시교정수술에서임상성적비교 4 Table. Summary of data about patient who had LASIK operation using second laser and keratome Age (years) Male:Female (eyes) Pre-op. IOP (mmhg) Pre-op SE * (D) Pre-op
More informationWe are IntechOpen, the world s leading publisher of Open Access books Built by scientists, for scientists. International authors and editors
We are IntechOpen, the world s leading publisher of Open Access books Built by scientists, for scientists 3,800 116,000 120M Open access books available International authors and editors Downloads Our
More informationThe two currently accepted methods for correcting
New Technique Therapeutic Alloplastic Laser in situ Keratomileusis for Myopia Arturo Maldonado-Bas, MD; Ruben Pulido-Garcia, MD ABSTRACT BACKGROUND: A new technique, therapeutic alloplastic laser in situ
More informationOriginal Article High myopia as a risk factor for post-lasik ectasia: a case report
Original Article High myopia as a risk factor for post-lasik ectasia: a case report Mona Harissi-Dagher, MD, a,b Sonja A. F. Frimmel, c and Samir Melki, MD, PhD a,d Author affiliations: a Massachusetts
More informationEvaluation of The Accuracy of Sub Bowman s Keratomileusis (SBK) Microkeratome in Flap Creation during Lasik Surgery
The Egyptian Journal of Hospital Medicine (April 2018) Vol. 71 (3), Page 2636-2642 Evaluation of The Accuracy of Sub Bowman s Keratomileusis (SBK) Microkeratome in Flap Creation during Lasik Surgery Hager
More informationEnhancement of femtosecond lenticule extraction for visual symptomatic eye after myopia correction
Zhao et al. BMC Ophthalmology 2014, 14:68 CASE REPORT Open Access Enhancement of femtosecond lenticule extraction for visual symptomatic eye after myopia correction Jing Zhao, Peijun Yao, Zhi Chen, Meiyan
More informationThe Effect of Ptosis on Cataract Surgical Planning
Published online: April 14, 2015 1663 2699/15/0061 0132$39.50/0 This is an Open Access article licensed under the terms of the Creative Commons Attribution-NonCommercial 3.0 Unported license (CC BY-NC)
More informationProf.Paolo Vinciguerra, M.D. 1, 2 Riccardo Vinciguerra, M.D Humanitas University 1. Humanitas Clinical and Research Center IRCS 2
Prof.Paolo Vinciguerra, M.D. 1, 2 Riccardo Vinciguerra, M.D. 1-3 1 Humanitas University 1 Humanitas Clinical and Research Center IRCS 2 Columbus, Ohio State University 3 University of Insubria, Varese
More informationLaser in situ keratomileusis (LASIK) has proven to be
Autorefractometry after laser in situ keratomileusis Dimitrios S. Siganos, MD, PhD, Corina Popescu, MD, Nikolaos Bessis, DOpt, Georgios Papastergiou, MD Purpose: To correlate cycloplegic subjective refraction
More informationClinical Study Femtosecond Laser and Big-Bubble Deep Anterior Lamellar Keratoplasty: A New Chance
Ophthalmology Volume 2012, Article ID 264590, 4 pages doi:10.1155/2012/264590 Clinical Study Femtosecond Laser and Big-Bubble Deep Anterior Lamellar Keratoplasty: A New Chance Luca Buzzonetti, Gianni Petrocelli,
More informationComparison of Newer IOL Power Calculation Methods for Eyes With Previous Radial Keratotomy PATIENTS AND METHODS. Patients
Special Issue Comparison of Newer IOL Power Calculation Methods for Eyes With Previous Radial Keratotomy Jack X. Ma, 1 Maolong Tang, 2 Li Wang, 3 Mitchell P. Weikert, 3 David Huang, 2 and Douglas D. Koch
More informationAcrySof ReSTOR Multifocal versus AcrySof SA60AT Monofocal Intraocular Lenses: A Comparison of Visual Acuity and Contrast Sensitivity
AcrySof ReSTOR Multifocal versus AcrySof SA6AT Monofocal Intraocular Lenses: A Comparison of Visual Acuity and Contrast Sensitivity Hassan Hashemi, MD,2 Hamid Reza Nikbin, MD 2 Mehdi Khabazkhoob, MSc 2
More informationPRELIMINARY RESULTS IN TRANS EPITHELIAL CORNEAL CROSSLINKING
PRELIMINARY RESULTS IN TRANS EPITHELIAL CORNEAL CROSSLINKING Authors: Diana Mihu, Adriana Stănilă, Mihaela Florescu, ValericaProştean Ophthalmology Clinic Sibiu Ocular Surface Research Center Sibiu, 2
More informationLASIK Flap Thickness Accuracy after Using Mechanical Microkeratome
Med. J. Cairo Univ., Vol. 84, No. 1, June: 733-737, 2016 www.medicaljournalofcairouniversity.net LASIK Flap Thickness Accuracy after Using Mechanical Microkeratome AYA H. FARAG, M.Sc.; RANIA M. SOBHY,
More informationWe are IntechOpen, the world s leading publisher of Open Access books Built by scientists, for scientists. International authors and editors
We are IntechOpen, the world s leading publisher of Open Access books Built by scientists, for scientists 3,900 116,000 120M Open access books available International authors and editors Downloads Our
More informationTHE PENTACAM AXL. Improving Cataract Surgery Outcomes. Optical biometry and anterior segment tomography in one device
Insert to November/December 2016 Sponsored by OCULUS THE PENTACAM AXL Improving Cataract Surgery Outcomes Optical biometry and anterior segment tomography in one device A New Way to Calculate IOL Power
More informationBiomechanics of Corneal Ring Implants. Albert Daxer, MD, MSc, PhD*
BASIC INVESTIGATION Biomechanics of Corneal Ring Implants Albert Daxer, MD, MSc, PhD* Purpose: To evaluate the biomechanics of corneal ring implants by providing a related mathematical theory and biomechanical
More informationCataract Surgery in the Patient with a History of LASIK or PRK
Cataract Surgery in the Patient with a History of LASIK or PRK #56996-RS April 2018 Sebastian Lesniak, MD Matossian Eye Associates None Disclosures Bio Matossian Eye Associates, Hopewell NJ, 7/2015 Present
More informationCataract Surgery in Patients with a Previous History of KAMRA Inlay Implantation: A Case Series
Ophthalmol Ther (2017) 6:207 213 DOI 10.1007/s40123-017-0088-4 CASE SERIES Cataract Surgery in Patients with a Previous History of KAMRA Inlay Implantation: A Case Series Majid Moshirfar. Tyler S. Quist.
More informationPhotorefractive Keratectomy as A Retreatment of Residual Myopia after Previous Laser in Situ Keratomileusis
Photorefractive Keratectomy as A Retreatment of Residual Myopia after Previous Laser in Situ Keratomileusis Alireza Ashtari, MD 1 Hassan Razmju, MD 2 Amin Masjedi, MD 3 Alireza Zandi, MD 1 Mehdi Tavakoli,
More informationClinical Outcomes after Topography-based Corneal Laser Surgery with the. WaveLight Oculyzer and Topolyzer Platforms
1 Clinical Outcomes after Topography-based Corneal Laser Surgery with the WaveLight Oculyzer and Topolyzer Platforms By Arthur B. Cummings, M.D. 1 and Nadia Mascharka, MSc 2 Corresponding Author: Arthur
More informationSummary Recommendations for Keratorefractive Laser Surgery June 2013
Summary Recommendations for Keratorefractive Laser Surgery June 2013 Background Laser assisted in-situ keratomileusis (LASIK) surgery is the most commonly performed keratorefractive surgery; altering the
More informationManagement of postkeratoplasty ametropia: IntraLASIK after penetrating keratoplasty
European Journal of Ophthalmology / Vol. 18 no. 6, 2008 / pp. 877-885 Management of postkeratoplasty ametropia: IntraLASIK after penetrating keratoplasty R.B. KUCUMEN, N.M. YENEREL, E. GORGUN, M.L. ALIMGIL
More informationFlap characteristics, predictability, and safety of the Ziemer FEMTO LDV femtosecond laser with the disposable suction ring for LASIK
(2014) 28, 66 71 & 2014 Macmillan Publishers Limited All rights reserved 0950-222X/14 www.nature.com/eye CLINICAL STUDY Flap characteristics, predictability, and safety of the Ziemer FEMTO LDV femtosecond
More informationArtiflex Toric Phakic Intraocular Lens Implantation in Congenital Nystagmus
273 This is an Open Access article licensed under the terms of the Creative Commons Attribution- NonCommercial-NoDerivs 3.0 License (www.karger.com/oa-license), applicable to the online version of the
More informationComparison of Corneal Shape Changes and Aberrations Induced By FS-LASIK and SMILE for Myopia
ORIGINAL ARTICLE Comparison of Corneal Shape Changes and Aberrations Induced By FS-LASIK and SMILE for Myopia Anders Gyldenkerne, MS; Anders Ivarsen, MD, PhD; Jesper Ø. Hjortdal, MD, PhD ABSTRACT PURPOSE:
More informationIn Practice. Surgical Procedures Diagnosis New Drugs
In Practice Surgical Procedures Diagnosis New Drugs 32 35 Bowman + Bulk = Better Results Mid-stromal lamellar keratoplasty (MSLK) offers a new approach to the management of advanced keratoconus that can
More informationClear Lens Extraction for Correction of High Myopia
Original Article Clear Lens Extraction for Correction of High Myopia Abbas Abolhasani 1, MD; Mostafa Heidari *2, MS; Ahmad Shojaei 1, MD; Seyed Hashem Khoee 1, MD; Mahmoud Rafati 1, MD; Ali Moradi 1, MS
More informationCorneal Cross-Linking in Keratoconus Using the Standard and Rapid Treatment Protocol: Differences in Demarcation Line and 12-Month Outcomes METHODS
Cornea Corneal Cross-Linking in Keratoconus Using the Standard and Rapid Treatment Protocol: Differences in Demarcation Line and 12-Month Outcomes Sara Brittingham, Christoph Tappeiner, and Beatrice E.
More informationConductive Keratoplasty to Correct Residual Hyperopia and Astigmatism after Cataract Surgery
Conductive Keratoplasty to Correct Residual Hyperopia and Astigmatism after Cataract Surgery Hassan Hashemi, MD 1,2 Ali-Reza Habibollahi, MD 2 Abstract Purpose: To present conductive keratoplasty (CK)
More informationWhite Paper. Topography-Guided Laser Assisted In-Situ Keratomileusis vs Small- Incision Lenticule Extraction Refractive Surgery
White Paper Topography-Guided Laser Assisted In-Situ Keratomileusis vs Small- Incision Lenticule Extraction Refractive Surgery A Summary of Clinical Outcomes Andrea Petznick, Diplom-AO (FH), PhD Alcon
More informationThirty-month results after the treatment of post-lasik ectasia with allogenic lenticule addition and corneal cross-linking: a case report
Li et al. BMC Ophthalmology (2018) 18:294 https://doi.org/10.1186/s12886-018-0967-z CASE REPORT Open Access Thirty-month results after the treatment of post-lasik ectasia with allogenic lenticule addition
More informationWhite Paper. Topography-Guided Laser Assisted In-Situ Keratomileusis vs Small- Incision Lenticule Extraction Refractive Surgery
White Paper Topography-Guided Laser Assisted In-Situ Keratomileusis vs Small- Incision Lenticule Extraction Refractive Surgery A Summary of Clinical Outcomes Andrea Petznick, Diplom-AO (FH), PhD Alcon
More informationThe pinnacle of refractive performance.
The pinnacle of refractive performance. WaveLight REFRACTIVE PORTFOLIO Advancing REFRACTIVE SURGERY Contoura Vision sets a new standard in LASIK outcomes More than 98% of patients would choose it again.
More informationContoura TM Vision Correction
Contoura TM Vision Correction Fernando Faria Correia, Financial Disclosures: Alcon/Wavelight Cairo (Egypt) 26/01/2018 Topography-guided ablations Topography guided ablations Evolution from complicated
More informationLaser-assisted in situ keratomileusis (LASIK) is the most
CLINICAL SCIENCE Visual Outcomes After SMILE, LASEK, and LASEK Combined With Corneal Collagen Cross-Linking for High Myopic Correction Sangyoon Hyun, MD,* Seongjun Lee, MD, and Jae-hyung Kim, MD* Purpose:
More informationLASIK for 6.00 to D of Myopia With up to 3.00 D of Cylinder Using the ALLEGRETTO WAVE: 3- and 6-month Results With the 200- and 400-Hz Platforms
LASIK for 6.00 to 12.00 D of Myopia With up to 3.00 D of Cylinder Using the ALLEGRETTO WAVE: 3- and 6-month Results With the 200- and 400-Hz Platforms Karl G. Stonecipher, MD; Guy M. Kezirian, MD; Megan
More informationClinical Study Posterior Corneal Surface Stability after Femtosecond Laser-Assisted Keratomileusis
Ophthalmology Volume 215, Article ID 18485, 6 pages http://dx.doi.org/1155/215/18485 Clinical Study Posterior Corneal Surface Stability after Femtosecond Laser-Assisted Keratomileusis Carlo Cagini, 1 Marco
More informationDeep Anterior Lamellar Keratoplasty - Techniques
Deep Anterior Lamellar Keratoplasty - Techniques SHERAZ DAYA MD FACP FACS FRCS(Ed) FRCOphth Financial Disclosure Company Code 1. Abbott Medical Optics Inc. S 2. Bausch + Lomb C,L 3. Carl Zeiss Meditec
More informationInterpretation of corneal tomography
Interpretation of corneal tomography Presented by Chameen Samarawickrama - Westmead Hospital - Liverpool Hospital - University of Sydney - University of New South Wales The University of Sydney Page 1
More informationCorneal refractive surgery
Miltos Balidis PhD, FEBOphth, ICOphth Corneal refractive surgery Symposium of the Hellenic Society of Intraocular Implant and Refractive Surgery Cairo, 14/3/2018 1 Professional standards for refractive
More informationMicrocoaxial Phacoemulsification versus Conventional Phacoemulsification: A Prospective Study
Microcoaxial Phacoemulsification versus Conventional Phacoemulsification: A Prospective Study Seyed Javad Hashemian, MD 1 Farzad Pakdel, MD 2 Alireza Foroutan, MD 2 Mahmood Joshaghani, MD 2 Jafar Ghaempanah,
More informationPearls for the Refractive Technician Fadiah Alkhawaldeh, IMBA, COT, ROUB
Pearls for the Refractive Technician Fadiah Alkhawaldeh, IMBA, COT, ROUB Cleveland Clinic Cole Eye Institute OOS, Columbus, OH February, 2014 alkhawf@ccf.org NO FINANCIAL DISCLOSURES A Puzzle of an Eye
More informationADVANCES in REFRACTIVE, CORNEA, and CATARACT SURGERY UPDATE 2018
efocus Innovation, Leadership, Passion for Perfection Issue 051 415.922.9500 www.pacificvision.org March 2018 ADVANCES in REFRACTIVE, CORNEA, and CATARACT SURGERY UPDATE 2018 Eye care has always been at
More informationExamination of the cornea by very highfrequency
Epithelial and Stromal Changes Induced by Intacs Examined by Three-dimensional Very Highfrequency Digital Ultrasound Dan Z. Reinstein, MD, MA(Cantab), FRCSC; Sabong Srivannaboon, MD; Simon P. Holland,
More informationK eratoconus is a progressive, non-inflammatory condition
371 EXTENDED REPORT Late onset post-keratoplasty astigmatism in patients with keratoconus L Lim, K Pesudovs, M Goggin, D J Coster... Br J Ophthalmol 2004;88:371 376. doi: 10.1136/bjo.2003.027037 See end
More informationWenjing Wu and Yan Wang. 1. Introduction. 2. Materials and Methods
Journal of Ophthalmology Volume 2015, Article ID 758196, 10 pages http://dx.doi.org/10.1155/2015/758196 Research Article The Correlation Analysis between Corneal Biomechanical Properties and the Surgically
More informationMedical Affairs Policy
Medical Affairs Policy Service: Corneal Treatments and Specialized Contact Lenses (Corneal remodeling, Corneal transplant, Corneal collagen crosslinking, Intrastromal Rings- INTACS, Keratoconus treatments,
More informationBilateral Keratectasia 34 Years after Corneal Transplant
24 Bilateral Keratectasia 34 Years after Corneal Transplant Xavier Valldeperas a, b Martina Angi b, c Vito Romano d Mario R. Romano b, e a Department of Ophthalmology, Hospital Universitari Germans Trias
More informationKeratoconus is a corneal disorder that affects the shape and
Cornea Quantitative OCT-Based Longitudinal Evaluation of Intracorneal Ring Segment Implantation in Keratoconus Pablo Pérez-Merino, 1 Sergio Ortiz, 1 Nicolas Alejandre, 1,2 Ignacio Jiménez-Alfaro, 1,2 and
More informationRing-Shaped Corneal Stromal Opacities after Corneal Cross-linking with Riboflavin and Ultraviolet A Irradiation for Keratoconus
10.5005/jp-journals-10025-1027 George D Kymionis et al CASE REPORT Ring-Shaped Corneal Stromal Opacities after Corneal Cross-linking with Riboflavin and Ultraviolet A Irradiation for Keratoconus George
More informationFEP Medical Policy Manual
FEP Medical Manual 9.03.05 Corneal Topography/Computer-Assisted Corneal Topography/ Photokeratoscopy Last Review: September 2016 Next Review: September 2017 Related Policies 9.03.28 Corneal Collagen Cross-linking
More information