Coats Disease - Before and After Sector Panretinal Photocoagulation

This 19-year-old patient presented with no visual complaints and a visual acuity of 20/20 in both eyes. Upon examination his right eye was normal. His left eye was found to have dilated blood vessels (retinal telangiectasia) and lipid exudates temporal to his macula (white arrows). The condition in his left eye is Coats disease. This condition typically affects one eye only and is predominantly seen in males. He underwent sector panretinal photocoagulation to the area of the abnormal retinal vessels and within a month was observed to have resolving lipid deposits (yellow arrows). A year later there were no new signs of telangiectasia and leakage. His optos fundus photo confirms this (black arrows). To watch for possible recurrences that may threaten his vision, he was asked to return every year for retinal evaluation.