Simple fundus perimetry with the slit lamp

This article describes a method for direct fundus perimetry with the slit lamp through a highly refractive converging lens (+ 90 D). For this purpose an intermediate position within the existing diaphragm system was chosen to form a double half circle light mark. In the clinical practice quick results can be achieved with little stress especially for patients suffering from hemianopia. The method described could be much more refined by purposeful changes in the diaphragm system of the slit lamp.