Wells and Visual Science
The title of Wells’ Essay (Chapter 3) clearly defines its domain as single vision with two eyes, but there were also four articles on visual position and motion, visible persistence, convergence and accommodation, and distinct vision. Each of these will be assessed separately below, although his observations on visual vertigo, contained in the essay on visible position and motion, will warrant a chapter to itself. Wells advanced the understanding of visual optics, too, by distinguishing between the optic and visual axes of the eye. Binocular vision was not considered as an isolated area, but as the experimental introduction to the perception of space itself. It had been so examined in the past, and Wells added a distinctly empirical link to the chain binding binocular vision to the perception of space.
KeywordsCrystalline Lens Chromatic Aberration Visual Persistence Visual Axis Common Axis
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