ABSTRACT
Embolus occlusion in the retinal artery is the most common cause of central retinal artery occlusion (CRAO),while hypertension is the most common risk factor of CRAO,and ipsilateral carotid artery stenosis is the most significant risk factor in CRAO.Current clinical treatments include conservative treatments such as dilation of blood vessels and lowering the intraocular pressure (IOP),as well as aggressive treatments like intravenous thrombolysis and Nd∶YAG laser.Both thrombolysis and Nd∶YAG laser treatment can improve the visual acuity of CRAO patients,but because of its lack of randomized controlled trials,further clinical studies are needed to determine their efficacy and safety.CRAO patients may have vascular embolism at other sites in the body,and may cause different degrees of cardiovascular and cerebrovascular events.The probability of secondary ocular neovascularization following the occurrence of these events is 2.5％ to 31.6％.In addition to eye care,clinicians should also focus more on preventing cardiovascular and cerebrovascular events,and focus on the screening and active treatment of systemic risk factors to reduce the incidence and mortality of cardiovascular and cerebrovascular events.