Charles Sherington (1857–1952) – DR PM 01
William Harvey (1578–1657) – DR PM 02
Stephen Hales (1677–1761) – DR PM 03
Avtar Singh Paintal (1925–2004) – DR PM 04
Anton Van Leeuwenhoek (1632–1723) – DR PM 05
Ivan Pavlov (1849–1936) – DR PM 06
Claude Bernard (1813–1878) – DR PM 07
Walter B. Cannon (1871–1945) – DR PM 08
Karl Landsteiner (1868–1943) – DR PM 09
Willem Einthoven (1860–1927) – DR PM 10
Frederick Grant Banting (1891–1941) – DR PM 11
Hermann Von Helmholtz (1821–1894) – DR PM 12
Werner Forssmann (1904–1979) – DR PM 13
John Newport Langley – DR PM 14
Philip Showalter Hench – DR PM 15
Sir James Young Simpson – DR PM 16
Thomas Renton Elliott – DR PM 17
Ulf von Euler – DR PM 18
Adolf Eugen Fick – DR PM 19
Andrew Fielding Huxley – DR PM 20
Arthur Clifton Guyton – DR PM 21
Eric Richard Kandel – DR PM 22
Georg Von Békésy – DR PM 23
Joseph Erlanger – DR PM 24
Linda Brown Buck – DR PM 25
Robert Bárány – DR PM 26
William Maddock Bayliss – DR PM 27
Yoshinori Ohsumi – DR PM 28
Charles Best – DR PM 29
Sir Frederick Grant Banting – DR PM 30
Format: Chart with lines of letters, starting with a large single letter at the top
Letter Type: Sans-serif, standardized optotypes (not standard alphabet fonts)
Distance: To be used at a standard distance of 6 meters (20 feet)
Visual Acuity Markings: Each line marked with corresponding Snellen fraction (e.g., 6/6, 6/9, 6/12, 6/18, 6/24, 6/36, 6/60, etc.)
Top Letter Size: Large enough to be seen by a person with 6/60 vision at 6 meters
Bottom Line Size: Small enough to correspond to 6/6 normal vision at 6 meters
Material: High-quality, non-reflective board or laminated plastic, or digitally printed on matte surface
Language: Usually in English letters, also be available in regional scripts or E-charts for non-literate patients
Dimensions: around 22 x 56 cm (vary slightly depending on format and design)
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