A Red, Stone-Hard Eye After a Vein Occlusion - Ophthalmology clinical simulation case. A 62-year-old male with a known history of ischemic central retinal...
Age: 62 • Gender: Male • Setting: Emergency Triage
Clinical Presentation & History
A 62-year-old male with a known history of ischemic central retinal vein occlusion (CRVO) in the left eye three months ago presents to the Emergency Department with excruciating left eye pain, marked conjunctival injection, profound vision loss, nausea, and a rock-hard globe on palpation. Hypertension, type 2 diabetes mellitus, dyslipidemia. Chronic smoker (30 pack-years).
Acute Resuscitation Milestones & Priorities
Clinical phases and key interventions encountered in this emergency module:
Neovascular glaucoma is a delayed complication of ischemic CRVO occurring typically 3-6 months after the occlusion, driven by VEGF release from ischemic peripheral retina.
Medical IOP control (timolol, apraclonidine, acetazolamide, osmotic agents) is the immediate bridge; pilocarpine and Nd:YAG PI are ineffective because the angle is closed by fibrovascular tissue, not pupillary block.
Intravitreal anti-VEGF (bevacizumab, ranibizumab, aflibercept) rapidly regresses rubeosis iridis and buys time but is NOT definitive.
Panretinal photocoagulation (PRP) of ischemic peripheral retina is the definitive treatment because it ablates the source of VEGF.
Prophylactic PRP at the time of ischemic CRVO diagnosis can prevent neovascular glaucoma and should be standard of care.
Test Your Clinical Reasoning in Real Time
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