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WH 0704 3M ETDRS led distance visual acuitry chart light box

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Product Description

ETDRS CHART LIGHT BOX

(WH0704)

LED BACKLIGHT VISION TESTING(PATENT PRODUCT)
Standardized and uniform illumination
Clearly printed optotypes
Can be placed on a table, or hung on a wall
Controlled by wireless remote, or by manual
Power supply:AC100~240V(by power adapter), or DC 12V (by optional battery)

Including optotype, astigmatism chart ,red/green bar,.Each part can be illuminated

Test distance :3m.

Remote control , optional

WH0704 3M