Radius of stimulator: 300mm±5mm

1. Stimulating source of LED(LED)

2. Two visual lights: yellow and red.

3. Stimulating strength: From 0nt (0asb) to318.310nt (1000asb), have 14 degree to adjust, the error is±10%.

i. Error of background brightness():4asb±10%

ii. Light spot: Diameter is 2mm +/- 0.25mm.

iii. The number of stimulating and the stimulating time:

A.388 spots (Red light: 61spots, yellow: 327spots);

B: stimulating retention time: 0.2s--2.0s, the program can adjust (±5%);

C: stimulating spacing interval: 0.5s --2.0s, the program can adjust (±5%);

iv. Window of eye-position tracking: White-black CCD, directly tracking the   testing eye;

v. The length of chin rest: up-down: 80mm±10%;  right-left 115mm±10%

vi. Eye position tracking: When blinking, the system will alarm automatically.