Figures & data
FIGURE 1. (A) Goldmann manual visual field test. The patient's visual field is centrally constricted (keyhole field) at less than 10 degrees. A keyhole field leads to difficulty maneuvering around objects in the periphery in organic vision loss. (B) Tangent screen test. The visual field remained consistent when the size of the object, as well as the distance between the patient and the tangent screen, was increased (3/1000 = object of 3 cm in size at 1 m distance from the patient; 18/1000 = 18 cm object at 1 m; 35/2000 = 35 cm object at 2 m).
