New multi-function near logarithmic vision acuity chart, and alphabet chart
Two sides for testing, one side test at 25 cm, the other side test at 30 cm
Fashion modeling,ultrathin design.
LED light source,energy conservation,power saving and long life.
Tow kind of LED brightness option.
Features:
Diversification test
1. Astigmatic fan dial
2. Cross cylinder
3. Cross grid
4. RG panal
LED source inside
Uniform illumination
No flicker, eye protection
Handheld, easier to use
Rechargeable lithium battery
More convenient to use
Instructions for using:
25CM or 30CM distance from examinee when checking near vision.
It can be used separately or charging using.
In order to prolong using life,please power off the machine when unusing.
If there is dust on the machine,please use glasses cleaning cloth to wipe it.
Avoid sharp things scratch the surface.
