Colour vision [electronic resource] : being the Tyndall lectures delivered in 1894 at the Royal Institution (1895)
Abney, William de Wiveleslie, Sir, 1843-1920, Parsons, John Herbert, Sir, 1868-1957, donor, Institute of Ophthalmology, University College, London. Library Services · London : Sampson, Low, Marston & Company · leaf 160
Colour Vision, 144 fields for both eyes are given : that for the left eye in the left-hand chart, and that for the right eye in the right-hand chart. The small dark spots within the 5°
Ophthalmology · Eye · Color vision · Color Perception
Internet Archive · UCL Library Services, University College London (UCL) · Public domain (published before 1931). Free to use for anything.
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