LED Distance visual acuity chart
LED BACKLIGHT VISION TESTING(PATENT PRODUCT)
Standardized and uniform illumination
Clearly printed optotypes
Can be placed on a table, or hung on a wall
Power supply:AC100~240V(by power adapter), or DC 12V (by optional battery)
Test distance :3m. with remote control
There are E Chart, number chart, letter chart, child chart. etc.