Vascular anastomoses in ocular toxoplasmosis.

Toxoplasmosis is a frequent cause of uveitis seen in clinical practice and fundus scars typical of ocular toxoplasmosis are common. It has been reported that vascular anastomoses between the retinal and choroidal circulation can occur through the damaged Bruch's membrane in fundus scars resulting from ocular toxoplasmosis. Although it has been stated that these vascular anastomoses are a rare occurrence, it has also been suggested that they are relatively common. In order to determine the prevalence rate of patients with vascular anastomoses in toxoplasmic fundus scars, 3,850 consecutive optometry patient files were studied retrospectively. Seventy-four patients (1.92%) had a clinical diagnosis of ocular toxoplasmosis with typical fundus scars, and two of these patients (2.70%) had documented vascular anastomoses.