Richard Jackson, MD
Mac Grory B, Nackenoff A, Poli S, Spitzer MS, Nedelmann M, Guillon B, Preterre C, Chen CS, Lee AW, Yaghi S, et al. Intravenous Fibrinolysis for Central Retinal Artery Occlusion: A Cohort Study and Updated Patient-Level Meta-Analysis. Stroke. 2020;51:2018–2025.
Mac Grory et al. have published data that all stroke neurologists on call have been waiting for. In hospital systems where there are ophthalmologists taking calls, usually the neurologist on call for stroke gets the stroke code page for acute onset loss of vision or the patient is referred to the ER for a diagnosis of CRAO for evaluation. There is an ensuing debate between the on-call neurologist and ER physician about what to do for this patient. As neurologists, we are taught that the eye is an extension of the brain, and infarcts to the eye are technically infarcts to the brain. However, there is no data on whether or not thrombolysis with alteplase is efficacious. The ophthalmologists cite a lack of efficacy in trials and only one randomized trial with a small sample of 25 that showed no benefit when treated with standard dose 0.9mg/kg IV-tPA but within 24 hours of onset. An even more difficult situation arises in the primary stroke centers that do not have ophthalmologists on call where the neurologist on call for stroke has to make a decision based on clinical judgement. Both of these scenarios usually end in poor visual acuity for the patient after medical treatment with monotherapy or dual therapy antiplatelet with or without permissive hypertension and statin treatment.