Special Features:

Hemispherical projection type; 120/230 volt; 50/60 hz; 200 watts max; 1.9x telescope magnification; 60 step brightness; 3 sets gray filters; 6 diaphragms; 50 mm diameter area-covering capability; dioptric range in excess of + of - 6 diopters; chin rest vertical range in excess of 60 mm and lateral in excess of 90 mm; auto and manual operated recording device; patient-activated buzzer; target/background lamp; 2 recording charts; projection surface 300 mm radius w/white background adjusts to the max brightness 31.5 a s b; 20 x 30 in. Table top; light meter w/battery; correction lens frame; cleaning brush; silicone cloth; air blower; dust cover; 400 sets recording charts; 400 chin-rest pads; 2 target/background lamps; 2 recording chart illumination lamps and fuses or circuit breakers protective devices; measures light perception, peripheral and central fields, and blind spots; for use in field assemblies only

Properties:

An apparatus for determining the extent of the peripheral visual field on a curved surface.