Abstract
ABSTRACT The case of a 55-year-old male who presented central retinal vein occlusion with marked macular ischemia in left eye is reported. Despite the intervention with sustained-release dexamethasone polymer injection and other clinical measures, the visual acuity was severely reduced in left eye. After 8 months, he returned to the emergency with acute visual loss of 2 hours of progression in right eye due to a central retinal artery occlusion, sparing only the territory of the cilioretinal artery. Patient underwent [...]
Highlights
Central retinal artery occlusion (CRAO) presents with sudden, severe, painless and usually unilateral loss of vision
Arterial occlusion is a rare condition, with an estimated incidence of 8.5 cases per 100,000 inhabitants, usually secondary to fatty embolus from the internal carotid artery, and it presents as sudden and painless visual field loss.(46) The central retinal vein occlusion (CRVO) has an estimated prevalence of 0.4% and its pathophysiology has not been fully understood yet. It is believed the condition is due to thromboembolic occlusion in the region of the lamina cribosa, but can be caused by mechanical compression of the vein at the same place, secondary to increased intraocular pressure.(6) Fundus examination shows intraretinal hemorrhages in the four quadrants, associated with increased venous caliber and tortuosity.(6) The prognosis is related to the occurrence of vision loss due to macular edema, intraretinal hemorrhage, and ischemia, leading to neovascularization.(9)
Based on etiology and characteristics, CRAO can be classified into four types: non-arteritic CRAO; non-arteritic CRAO with cilioretinal artery sparing; transient non-arteritic CRAO; and arteritic CRAO.(5)
Summary
Central retinal artery occlusion and central retinal vein occlusion in contralateral eye Oclusão da artéria central da retina com oclusão da veia central em olho contralateral Felipe Beltrão de Medeiros[1 ], Isabela Porto Silva Costa[2 ], João Pedro Vedovelli de Araujo[3 ], Jaqueline Cordeiro de Souza[4 ], Hilton Arcoverde Gonçalves de Medeiros[4]. How to cite: Medeiros FB, Costa IP, Araujo JP, Souza JC, Medeiros HA. Central retinal artery occlusion and central retinal vein occlusion in contralateral eye. Institution: Clínica de Olhos Dr João Eugênio, Brasília, DF, Brazil. Conflict of interest: no conflict of interest. Financial support: the authors received no financial support for this work
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