50.0 MB (4.5 MB compressed)
5147 x 3396 pixels
43.7 x 28.7 cm ⏐ 17.2 x 11.3 in (300dpi)
SCIENCE PHOTO LIBRARY SCIENCE PHOTO LIBRARY
Close up of 'Frost's Artificial Eye'. The device shows various defects in vision and would be used to train medical students to correctly diagnose these defects in real patients using an ophthalmoscope. This device dates from 1880 and was invented by English ophthalmologist, William Frost (1853-1935).
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