Objective To study changes in hemodynamics and hemorheology of central retinal artery (CRA) and optic artery (OA) in patients with central retinal vein occlusion (CRVO).

Objective To compare the incidence rates of myocardial infarction (MI) and cerebrovascular accident (CVA) in hospitalized patients with and without branch or central retinal vein occlusion (RVO).

Objective To observe the changes of microcirculation of central retinal vessel system of patients with retinal vein occlusion.