Chapter

image formation and accommodation

Ian P. Howard

in Perceiving in Depth

Published in print February 2012 | ISBN: 9780199764143
Published online May 2012 | e-ISBN: 9780199949359 | DOI: http://dx.doi.org/10.1093/acprof:oso/9780199764143.003.0261

Series: Oxford Psychology Series

image formation and accommodation

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The quality of the retinal image depends on optical factors such as chromatic and spherical aberrations and on the spacing of the receptors. An account of these factors is followed by a description of mechanisms responsible for the accommodation of the lens. First, the machinery of accommodation and the three types of accommodation are described. These are tonic accommodation, proximal accommodation, and accommodation induced by image blur. Induction of accommodation by image blur depends on blur detection and detection of the attributes of blur that indicate the required direction of accommodation. The chapter ends with a discussion of anisometropia and aniseikonia.

Keywords: image formation; optical aberrations; accommodation; image blur; anisometropia; aniseikonia

Chapter.  29830 words.  Illustrated.

Subjects: Neuroscience

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