Optical LED Visual Chart Light Box Optometry Eye Test Chart Ophthalmic Equipment

Description

Optical LED Visual Chart Light Box Optometry Eye Test Chart Ophthalmic Equipment
Specification
1. Detecting distance: 25cm
2. White light average brightness: 80-320cd / ㎡
3. Luminance uniformity ≥ 0.85.
4. Charger input voltage: AC110V-240V 50/60Hz.
Output voltage: DC5V  1000mA
5. Application: near vision detection (hyperopia and presbyopia).
6.Scope of application: 25-30cm test
7.Record vision method: logMAR, decimal, fraction method can be selected arbitrarily
8. Weight: 0.5kg
9. Size: 19.5* 14.5 * 1cm
10. Plug in and battery（
4xAAA batteries are not included.
）two ways for power supply.
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On Jan-09-20 at 17:10:28 PST, seller added the following information: