·We report clinical manifestations,angiographic,and optical coherence tomography (OCT) findings of four cases with bilateral idiopathic cystoid rnacular edema (CME).All were male with age between 30 and 52 years.All of them had compliant of bilateral visual loss during the last week.Fundus examination of their eyes showed macular edema in the posterior pole bilaterally. Fluorescein angiography revealed no specific finding in one of them and "typical petaloid pattern" in others.OCT showed subretinal fluid in all of them.All patients were managed with diagnosis of idiopathic CME,and after 6 weeks they had improved visual acuity.