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The aim of this study is to report a case of central retinal vein occlusion (CRVO) after coronary artery bypass graft (CABG) surgery. In this report, we present the third case in the literature with CRVO after cardiopulmonary bypass (CPB), and the first case after CABG. A 59-year-old male patient complaining of chest pain was admitted to our hospital. The patient underwent an elective coronary angiography and was diagnosed with three-vessel coronary artery disease. An uneventful coronary artery bypass graft operation was performed using CPB. On the second postoperative day, the patient described blurring and decreased vision in his left eye, whereas the right eye was normal. The anterior-posterior segment was examined by an ophthalmologist who diagnosed central retinal vein occlusion, using a visual acuity test, fundoscopy. After 5 months of treatment, there has been no improvement in the patient’s visual acuity. As two previous case reports indicated CRVO can be a rare complication after CPB, this study demonstrated that CRVO can also be a complication of CABG. Therefore, CRVO should always be considered as a potential complication after cardiac surgery.