Adult onset coats disease in a 56-year-old male: An atypical presentation

Coats disease is a congenital retinal vascular disease, which is seen commonly in childhood and remits and exacerbates throughout life. However, it is not rare for coats disease to present in adulthood for the first time. This has been referred to as adult onset coats disease. We do hereby present a rare case of adult onset coats disease in a 56-year-old male patient who presented with visual acuity of 20/200 in the left eye. Fundus findings typical of coats disease included telangiectasis, macular exudation and edema. Fluorescein angiography revealed peripheral capillary nonperfusion areas and telangiectasis. Optical coherence tomography showed cystoid macular edema. After the treatment with intravitreal injection of bevacizumab (1.25 mg in 0.05 ml) and sectoral panretinal photocoagulation to the area of capillary nonperfusion the macular edema was reduced by 100 microns, which translated to a visual acuity of 20/80, proving the point that the prognosis in these cases is not as grave as in classical coats disease