Therapeutical bandage contact lenses for corneal protection
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1 Therapeutical bandage contact lenses for corneal protection M i c h a e l B a e r t s c h i M.S.Optom Optom., M.Med.Educ Educ.,., F.A.A.O.
2 Contact for text manuscript demands michael.baertschi
3 O v e r v i e w - Objectives and Definitions 3 - Protection from Tx CL materials 2 - Clinical cases 30 - Attributes 6 - Fitting tricks 4 - Risks 2 - Prognosis 3 - Discussion 7
4 O b j e c t i v e s To review definitions, conditions and techniques in the use of therapeutical bandage contact lenses. To introduce advantages of using therapeutical bandage contact lenses of different materials and attributes. To provide an understanding of the pathophysiology, manifestations and appropriate management of patients with corneal disorders.
5 D e f i n i t i o n s Corneal disorders : Any kind of disturbances or diseases of the cornea, who interfere with the normal physiology of the human corneal tissue.
6 D e f i n i t i o n s Therapeutical bandage contact lenses : A bandage lens (also called a therapeutic lens) is a contact lens used primarily for a therapeutic or treatment purposes. Bandage lenses should be fitted so as to minimally disturb corneal physiology. (Definitions by CIBA Vision)
7 P r o t e c t i o n f r o m : 1. Tear evaporation 2. Mechanical Abrasion 3. Mechanical Pressure 4. Recurrent Erosions 5. Physiological Destabilization 6. Infections and Inflammations 7. Allergies
8 P r o t e c t i o n f r o m : 1. Pain and Itching 2. Tearing 3. Blepharospasmus 4. Blinding 5. Redness 6. Edema 7. Scarring 8. Funny looking
9 P r o t e c t i o n f o r : 1. Epithelial cell regrowth 2. Speed corneal healing 3. Physiological stabilization 4. Slow tear evaporation 5. Medical treatment
10 C L M a t e r i a l s Soft CL s (speciality)
11 C L M a t e r i a l s Soft CL s (disposable)
12 C L M a t e r i a l s Silicone- Hydrogel CL s
13 C L M a t e r i a l s Rigid gas permeable CL s
14 C l i n i c a l c a s e s Trichiasis : - mech.protection - Pain, tearing, Blepharospasm, redness - Infections - Scarring - Funny Looking
15 C l i n i c a l c a s e s Trichiasis : - mech.protection - Pain, tearing, Blepharospasm, redness - Infections - Scarring - Funny Looking
16 C l i n i c a l c a s e s Trichiasis : - mech.protection - Pain, tearing, Blepharospasm, redness - Infections - Scarring - Funny Looking
17 C l i n i c a l c a s e s Trichiasis : - mech.protection - Pain, tearing, Blepharospasm, redness,scarring scarring - Infections - Scarring - Funny Looking Prosthetic soft speciality CL (Cantor & Silver MMA-VP 70%)
18 Recurrent corneal erosion: - mech.protection - corneal healing - Pain, tearing, Blepharospasm, redness, blinding - Infections - less scarring C l i n i c a l c a s e s
19 C l i n i c a l c a s e s Recurrent corneal erosion: - mech.protection - corneal healing - Pain, tearing, Blepharospasm, redness, blinding - Infections - less scarring
20 C l i n i c a l c a s e s Recurrent corneal erosion: - mech.protection - corneal healing - Pain, tearing, Blepharospasm, redness, blinding - Infections - less scarring
21 C l i n i c a l c a s e s Recurrent corneal erosion: - mech.protection - corneal healing - Pain, tearing, Blepharospasm, redness, blinding - Infections - less scarring Soft speciality CL (Conso Conso BG 80%, Hecht/Ascon Ascon)
22 Recurrent corneal plaques: - mech.protection - corneal healing - Discomfort - less scarring - physiological Stabilization C l i n i c a l c a s e s
23 Recurrent corneal plaques: C l i n i c a l c a s e s - mech.protection - corneal healing - Discomfort - less scarring - physiological Stabilization Silicone-Hydrogel (Pure Vision, B&L)
24 C l i n i c a l c a s e s Recurrent basal cell disorder : - mech.protection - corneal healing - physiological Stabilization - optical Stabilization
25 C l i n i c a l c a s e s Recurrent basal cell disorder : - mech.protection - corneal healing - physiological Stabilization - optical Stabilization Silicone-Hydrogel (Pure Vision/B&L, Night & Day/CIBA)
26 Cornea Dystrophies : C l i n i c a l c a s e s
27 C l i n i c a l c a s e s Epithelial basement membrane Dystrophies : (Cogan or Map-Dot Dot-Fingerprint) - Discomfort - physiological Stabilization - optical Stabilization
28 C l i n i c a l c a s e s Epithelial basement membrane Dystrophies : (Cogan or Map-Dot Dot-Fingerprint) - Discomfort - physiological Stabilization - optical Stabilization Soft Disposable CL (H2O Extrem, Benz)
29 C l i n i c a l c a s e s Epithelial basement membrane Dystrophies : (Meesman) - Discomfort - physiological Stabilization - optical Stabilization
30 C l i n i c a l c a s e s Epithelial basement membrane Dystrophies : (Meesman) - Discomfort - physiological Stabilization - optical Stabilization Soft specialty CL (Conso Conso BG 80%, Hecht/Ascon Ascon)
31 C l i n i c a l c a s e s Epithelial basement membrane Dystrophies : (in general) - optical Stabilization
32 C l i n i c a l c a s e s Epithelial basement membrane Dystrophies : (in general) - optical Stabilization
33 C l i n i c a l c a s e s Epithelial / stromal Degeneration : (nodular Salzmann) - Discomfort - physiological Stabilization - optical Stabilization
34 C l i n i c a l c a s e s Epithelial / stromal Degeneration : (nodular Salzmann) - Discomfort - physiological Stabilization - optical Stabilization
35 C l i n i c a l c a s e s Epithelial / stromal Degeneration : (nodular Salzmann) - Discomfort - physiological Stabilization - optical Stabilization Silicone-Hydrogel (Pure Vision/B&L, Night & Day/CIBA)
36 Atopic Keratoconjunctivitis : - mech.protection - corneal healing - Pain, tearing, Blepharospasm, redness, blinding - less scarring - epithelial regrowth C l i n i c a l c a s e s
37 Atopic Keratoconjunctivitis : - mech.protection - corneal healing - Pain, tearing, Blepharospasm, redness, blinding - less scarring - epithelial regrowth C l i n i c a l c a s e s
38 Atopic Keratoconjunctivitis : - mech.protection - corneal healing - Pain, tearing, Blepharospasm, redness, blinding - less scarring - epithelial regrowth C l i n i c a l c a s e s
39 Atopic Keratoconjunctivitis : - mech.protection - corneal healing - Pain, tearing, Blepharospasm, redness, blinding - less scarring - epithelial regrowth C l i n i c a l c a s e s
40 Atopic Keratoconjunctivitis : - mech.protection - corneal healing - Pain, tearing, Blepharospasm, redness, blinding - less scarring - epithelial regrowth C l i n i c a l c a s e s Soft Disposable CL / RGP (PERIT, Falco)
41 C l i n i c a l c a s e s Bullous Keratopathy : - Pain, tearing, Blepharospasm, redness, blinding - less scarring - epithelial regrowth OS OD
42 Bullous Keratopathy : C l i n i c a l c a s e s - Pain, tearing, Blepharospasm, redness, blinding - less scarring - epithelial regrowth
43 Bullous Keratopathy : C l i n i c a l c a s e s - Pain, tearing, Blepharospasm, redness, blinding - less scarring - epithelial regrowth Soft disposable CL CL (Acuvue,, J&J, 1 Week EW) Silicone-Hydrogel (Pure Vision/B&L, Night & Day/CIBA, 1 Mt CW)
44 Bullous Keratopathy : C l i n i c a l c a s e s Surgical treatment = Penetrating Keratoplasty
45 C l i n i c a l c a s e s Penetrating Keratoplasty :
46 C l i n i c a l c a s e s Penetrating Keratoplasty : - Thread relaxation - After thread removal (only in rare cases) - Repulsion - Physiological Stabilization
47 Penetrating Keratoplasty : C l i n i c a l c a s e s - Thread relaxation - After thread removal (only in rare cases) - Repulsion - Physiological Stabilization Silicone-Hydrogel CL (Focus Night&Day, CIBA)
48 Penetrating Keratoplasty : C l i n i c a l c a s e s - Thread relaxation - After thread removal (only in rare cases) - Repulsion - Physiological Stabilization RGP CL (Miniscleral OAD 13,5 mm, OAD 13,5 mm, Falco,)
49 C l i n i c a l c a s e s Severe Keratokonus : - mechanical Protection - Pain, tearing, Blepharospasm, redness, blinding - less scarring (?) - less Progression (?)
50 Severe Keratokonus : - mechanical Protection - Pain, tearing, Blepharospasm, redness, blinding - less scarring (?) - less Progression (?) C l i n i c a l c a s e s
51 Severe Keratokonus : - mechanical Protection - Pain, tearing, Blepharospasm, redness, blinding - less scarring (?) - less Progression (?) C l i n i c a l c a s e s
52 Severe Keratokonus: - mechanical Protection - Pain, tearing, Blepharospasm, redness, blinding - less scarring (?) - less Progression (?) C l i n i c a l c a s e s RGP CL (FITQ, Boston XO, Falco)
53 C l i n i c a l c a s e s Dry Eye : - Tear evaporation - Discomfort, pain - Redness - Slow tear evaporation (Keratitis elagophthalmo)
54 C l i n i c a l c a s e s Dry Eye : - Tear evaporation - Discomfort, pain - Redness - Slow tear evaporation (Keratitis filiformis)
55 C l i n i c a l c a s e s Dry Eye : - Tear evaporation - Discomfort, pain - Redness - Slow tear evaporation (Lid Surgery)
56 C l i n i c a l c a s e s Dry Eye : - Tear evaporation - Discomfort, pain - Redness - Slow tear evaporation (Keratitis neuroparalytica) Silicone-Hydrogel CL (Focus Night&Day, CIBA)
57 A t t r i b u t e s - Water binding - Ionic binding - Deposits - Drug binding - Oxygen Transmissibility - Flexural modulus
58 A t t r i b u t e s % 80 Water binding BG 80 H2O Extreme Acuvue + Pure Vision + Night & Day + RGP
59 A t t r i b u t e s Ionic binding BG 80 H2O Extreme Acuvue Pure Vision Night & Day RGP
60 A t t r i b u t e s Deposits (Proteins,Lipids Lipids) Deposits BG 80 H2O Extreme Acuvue Pure Vision Night & Day RGP
61 A t t r i b u t e s Drug binding BG 80 H2O Extreme Acuvue Pure Vision Night & Day RGP
62 A t t r i b u t e s Oxygen Transmissibility (ISO) BG 80 H2O Extreme Acuvue Pure Vision Night & Day RGP
63 250 A t t r i b u t e s Flexural Modulus Appr. Appr. 0 BG 80 H2O Extreme Acuvue Pure Vision Night & Day RGP
64 F i t t i n g t r i c k s Choosing the right attitudes : - Low evaporation rate for corneal protection. - High evaporation rate for epithelial dehydration. - High ionic and drug binding as a drug reservoir for antibiotics, hyperchlorid, cycloplegics, steroids or NSAID (Drops or ointment). Take attention to preservatives and epinephrine!
65 F i t t i n g t r i c k s Choosing the right attitudes : - Avoid high deposit rates because of microbial binding. - High O 2 -Transmissibility for speed corneal healing and enhanced epithelial cell regrowth. - Moderate to high stiffness/modulus for corneal surface modeling.
66 F i t t i n g t r i c k s Choosing the right wearing modality : Temporary Wear Daily Wear Extendet Wear (weeks) Continuous Wear (months/years)
67 F i t t i n g t r i c k s Choosing the right wearing modality : Temporary Wear = Modeling, Comfort,, mech.protection Daily Wear = Modeling, Comfort,, mech.protection Extendet Wear = Corneal healing and epithelial regrowth, Modeling, physiological stabilization, medical treatment, Comfort,, mech.protection Continuous Wear = Physiological stabilization, slow tear evaporation, Modeling,, mech.protection
68 R i s k s - Loss - Evaporation - Lack of oxygen - Microbial infections - Chemical contamination
69 R i s k s Microbial infections
70 P r o g n o s i s Short term prognosis : Therapeutic bandage contact lenses are useful to protect the convalescent cornea from negativ environmental influences. They are helpful to protect the patient from discomfort and pain. They are usable as a drug deposit with care.
71 P r o g n o s i s Middle and long term prognosis : Therapeutic bandage contact lenses are useful to protect the long term distroph cornea from negatives environmental influences. They are helpful to modeling the mild irregular corneal surface for better vision. They are helpful to protect the patient from discomfort and pain. They can make happy patients!
72 C o n c l u s i o n Used with a closed monitoring on a co- management base between the Ophthalmologist and the Optometrist, therapeutic bandage contact lenses are a good alternative to conservatives methods.
73 T h a n k y o u!
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