Purpose: To evaluate the clinical features of ocular ischemic syndrome in Koreans.Methods: The medical records of patients who were presumed to have ocular ischemic syndrome by ophthalmic examination, and confirmed by carotid artery imaging, were retrospectively reviewed from 2010 to 2017.Results: A total of 22 patients and 27 eyes were included in the study.Twenty patients were male.The average age was 64.2 years.Fifteen patients had hypertension and fifteen patients had diabetes mellitus.Twenty-one patients presented with acute visual impairment at the initial visit.The average best-corrected visual acuity (BCVA) was a LogMAR of 0.89 ± 0.65, with an average IOP of 16.1 ± 6.9 mmHg.Elevated IOP > 21 mmHg was noted in five eyes (18.5%).Iris neovascularization was the most common (13 eyes, 48.1%) feature in the anterior segment.Retinal hemorrhage was the most common feature in the fundus examination (23 eyes, 85.2%).The average central submacular thickness was 255.0 µm, and there was no macular edema except for one case with vitreomacular traction syndrome on optical coherent tomography.Conclusions: A total of 90.9% of patients with ocular ischemic syndrome were males > 50 years of age.Most patients presented with acute visual impairment.There was no macular edema on optical coherent tomography of all eyes.