Please read all details below, here is a quick summary: Item has not been tested, condition is unknown. We do not have the ability to test anything, we do offer a 30 day return from date of invoice. Questions: quickest response by email through listing (link at bottom left of listing labeled "Ask a Question").
Usages This device is applicable to ophthalmology department of hospitals and spectacle stores for precision measurement of visual functions such as myopia, hyperopia, astigmatism, eyesight balance, heterophoria, stereoscopic vision and eyesight amalgamation. Pack List
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