Ocular toxoplasmosis; common and rare symptoms and signs.

The common and rare symptoms and signs of congenital, childhood and adult ocular toxoplasmosis are discussed together with the differential diagnosis of the retinal lesions. A choroidal coloboma in connection with congenital toxoplasmosis is described. The occurrence of an optic pit with congenital macular toxoplasmosis, growth of subretinal new vessels as well as disappearance of arteriolar and venular sheathing is demonstrated.