This is a classic case of Coats disease, with unilateral retinal vascular leakage from both the capillary bed and larger vessels.
Fundus images show dilated capillaries and retinal vessels. In addition, there are multiple arterial macroaneurysms with surrounding exudate.
Fluorescein angiography shows the leaking telangiectatic vessels.
Learning Points:
Laser photocoagulation can be used to treat leaking macroaneurysms and telangiectatic vessels in Coats disease. Anti-VEGF injections can also be used to stabilize vascular leakage. Patients will usually require multiple rounds of treatment.
