Study: Clinical Significance of Retinal Vascular Occlusion i
The purpose of this report is to describe clinical findings of patients with retinal vascular occlusion in patients with moyamoya disease and present its clinical significance. Although moyamoya disease primarily affects the carotid artery in the ophthalmic artery bifurcation area, retinal vascular abnormalities in moyamoya disease have rarely been reported.

Patients with moyamoya disease with retinal vascular occlusions were reviewed and analyzed.

Results:
--Patients with retinal artery occlusion (RAO) were significantly younger than patients with retinal vein occlusion (25.0 vs. 40.1 years).

--Of 14 patients, retinal vascular occlusion was the presenting sign of moyamoya disease in 8 patients.

--The occlusion site at the carotid artery was proximal to the ophthalmic artery bifurcation area in 8 patients. Legal blindness occurred in 8 patients at final visits.

Finally, in patients with moyamoya disease, retinal vascular occlusion is a rare but potentially blinding ocular consequence. In general, younger age may be associated with RAO, whereas older age is associated with retinal vein occlusion. Retinal vascular occlusion can be a good sign of moyamoya disease, especially in patients who are relatively young and healthy.

Source: https://journals.lww.com/retinajournal/Abstract/2021/09000/CLINICAL_SIGNIFICANCE_OF_RETINAL_VASCULAR.1.aspx
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