Golovin–Sivtsev table
The Golovin–Sivtsev table (Russian: Таблица Головина-Сивцева, romanized: Tablitsa Golovina-Sivtseva) is a standardized table for testing visual acuity, which was developed in 1923 by Soviet ophthalmologists Sergei Golovin and D. A. Sivtsev. In the USSR, it was the most common table of its kind, and as of 2008 its use is still widespread in several post-Soviet states.