Professor Helen Danesh-Meyer. Eye Institute Auckland
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1 Professor Helen Danesh-Meyer Eye Institute Auckland
2 Bitten by Ophthalmology Emergencies Helen Danesh-Meyer, MBChB, MD, FRANZCO Sir William and Lady Stevenson Professor of Ophthalmology Head of Glaucoma and Neuro-ophthalmology Department of Ophthalmology University of Auckland Director, Eye Institute
3 Ophthalmological Emergencies Alkaline Burn Retinal Detachment Acute IIIrd nerve palsy Giant Cell Arteritis Acute Angle Closure Glaucoma Central Retinal Artery Occlusion Corneal ulcers Ophthalmia neonatorum Globe perforation Globe rupture Corneal ulcer Hyphema Intraocular foreign body Macular edema Orbital cellulitis
4 Key ophthalmological emergencies Immediate treatment is sight -saving Delay in diagnosis result in permanent irreversible visual loss Management can be initiated by GP prior to referral
5 CASE 1
6 Mrs AV: 78 year old man PC: Episode of loss of vision in left eye lasting 30 seconds. 3 episodes in one week Complete blackness followed by complete recovery. PMH: Hypertension (controlled by medication) Elevated Cholesterol (controlled by medication) Review of Systems Migraines Urinary Incontinence Dyspepsia Osteoarthritis Sexual dysfunction
7 Presented to emergency room Examination: Vision significantly recovered Diagnosis: amaurosis fugax Investigations: Carotid Duplex Studies- within one week Started on aspirin Cardiologist referral
8 Clinical course Re-presented 1/7 later Now: VA: 6/6 right No light perception Pupil: Left Relative afferent pupillary defect
9 Ophthalmic presentation Right Disc Left Disc
10 Management Diagnosis: Swollen left optic nerve? Giant cell arteritis? Non- arteritic anterior ischaemic optic neuropathy Management Given prescription for prednisone 60mg Temporal artery biopsy organised for 2/7
11 One day later: now no light perception BOTH eyes Right Disc Left Disc
12 Giant cell arteritis Ranks as the prime medical emergency Kearns, 1975
13 70% of patients who lose VA to worse than 6/60 Danesh-Meyer HV, Savino PJ, Sergott. The Prevalence of Cupping in End-Stage Arteritic and Non-arteritic anterior ischemic optic neuropathy. Ophthalmology 2001; 108: 593-8
14 Once vision is lost in one eye, if untreated VA is lost in the other eye: - 1/3 within one month - 1/3 within one week - 1/3 within one day
15 1. Index of suspicion 2. Delay of initiation of treatment 3. Inadequate Dose of Steroids
16 1. Index of suspicion
17 Giant Cell Arteritis > 55 years Ocular signs Systemic/ constitutional signs
18 Ocular Involvement Transient Visual Obscurations 65% Anterior Ischaemic Optic Neuropathy 80-90% CRAO 10-15% Diplopia 2-15% Up to 20% are occult GCA
19 Ocular Involvement Transient Visual Obscurations 65% Premonitary symptoms 8.5 days prior to sudden loss. Usually more than one episode Last few seconds to minutes Classically, darkening, graying or blackening Of vision
20 Ischaemic optic neuropathy Dangerous Not- dangerous
21 Constitutional Symptoms Weight loss Anorexia Night sweats Fatigue
22 Scalp tenderness Stroke Polymyalgia rheumatica Headache Cardiac dysfunction Jaw claudication GI infarction
23 Likelyhood Ration (LR) Symptom: LR - Jaw claudication Diplopia Absence of temp artery abnormality Headache 1.2 Levin et al, Ophthalmology 2004
24 2. Delay of initiation of treatment
25 Start Treatment with Steroids!
26
27 What tests help make the diagnosis? ESR CRP Platelets
28 2-20% will have biopsy-proven GCA and a Normal ESR. Keltner JL. Giant cell arteritis. Signs and symptoms. Ophthalmology 1982;89:
29 CRP CRP found to be more sensitive than ESR at detecting GCA. Hayreh SS, Podhajsky PA, Raman R, et al. Giant cell arteritis; Validity and reliability of various diagnostic data. Am J Ophthalmol 1997;123:
30 Histological Diagnosis: Temporal artery biopsy
31 3. Inadequate Dose of Steroids
32 Dose and Duration IV steroids if visual symptoms 1gm/ methylprednisolone 3/7 Usually treat for 1 year Manage side effects
33 Side Effects Osteroporosis - Actively managed. - Biphosphonates/ Calcium regimen - Bone density Diabetes Mood alteration
34 Giant cell arteritis: the great mimicker Think of the diagnosis Start steroids immediately Temporal artery biopsy to confirm diagnosis Adequate treatment
35 CASE 2
36 78 year old woman Red eye Painful eye Blurred vision Nausea and vomiting
37 Direct Questioning Nausae and Vomiting Pain Halos around lights Hypermetrope Cataract
38 Diagnosis Acute Angle Closure Glaucoma!
39 Aims of early management in acute Eliminate severe pain and nausea Lower IOP and clear the cornea which allows for definitive management Prevent permanent visual loss angle closure
40
41
42 Treatment of acute angle closure glaucoma Drops IV Laser
43
44 Corneal Indentation
45 Corneal indentation aims to break the Forcing aqueous into the peripheral anterior chamber opening the angle. If the angle can be forced open, the IOP will fall rapidly (within minutes) Definitive management can follow attack by:
46 Preferred instruments
47 Topical anaesthetic Pressure in cycles 30 seconds on / off IOP response in 3-4 cycles Inferior cornea End points Iris contour convex Pupil margin movement Technique
48 Case: 69 year old male PC: Acute onset severe pain and nausea 3-4 hours following pupil IOP 72mm Hg OD, 14mmHg OS Oral Diamox, Pilocarpine.Timolol and Brimonidine Minimal decrease in IOP after 45 min. IOP OD 11mmHg after corneal indentation Definitive Rx with laser iridotomies ( OD same day, OS next day)
49 Corneal Indentation Rapid, portable, safe and effective Independent of presenting IOP Most effective early in the attack
50 Ophthalmology Emergencies Think of the diagnosis Consider appropriate investigations Initiate immediate treatment
51
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