Material
Metal, Plastic, Steel
Instrument classification
Class II
Material
Metal, Plastic, Steel
Two visual lights
yellow and red
Error of background brightness
i.4asb±10%
Light spot
Diameter is 2mm +/- 0.25mm
timulating spacing interval
0.5s --2.0s, the program can adjust (±5%);
Window of eye-position tracking
White-black CCD, directly tracking the testing eye