Description

Product parameters:

Screen Size

Color

Working distance

Remote control distance

Power supply

Power

Vision recording methods

Optotypes

Test Graph

23.5 inch

White / Black

1.0 m~6.5m

0~8.0m

AC100V~240V,50/60Hz

48w

Decimal & Imperial fraction

Tumbling E, Landolt C and Alphabet etc

ETDRS, Contrast Sensitity Test, Contrast Test,Ishihara, Cross Cylinder, Astigmatic Fan Dial,Cross Grid, Fixation Spot Test, Stereo Test,Red/Green Test, Worth Four-Dot Test, ect