Last update at 26 · 09 · by milo

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The visual acuity is a measure of the spatial resolution of the visual processing system. VA, as it is sometimes referred to by optical professionals, is tested by requiring the person whose vision is being tested to identify so-called optotypes – stylized letters, Landolt rings, pediatric symbols, symbols for the illiterate, standardized Cyrillic letters in the Golovin–Sivtsev table, or other patterns.

Golovin–Sivtsev table
Typography is the art and technique of arranging type in order to make language visible.


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