DEVICE FOR ESTIMATION OF VISION ACUITY Russian patent published in 2008 - IPC A61B3/32 A61B3/28 

Abstract RU 2335231 C2

FIELD: medicine.

SUBSTANCE: invention relates to medicine. Device for estimation of vision acuity includes table of optotypes with step 0.05. Table of optotypes is made with possibility to reduce illumination from 400 lx to 50 lx, and contains only letters with prevailing vertical lines U, N, S, E and geometrical figures triangle, square, circle.

EFFECT: ensuring possibility to detect ophthalmopathologies in early diagnostics.

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RU 2 335 231 C2

Authors

Tlupova Tamara Gumarovna

Dates

2008-10-10Published

2006-08-01Filed