Night Vision: Basic, Clinical and Applied Aspects
Robert Francis Hess, R. F. Hess, L. T. Sharpe, K. Nordby
Cambridge University Press, Sep 27, 1990 - Medical - 550 pages
Much has been discovered in recent years about the way our visual system copes with very low light levels, and this detailed up-to-date book describes the light and dark adaptation of receptoral and post-receptoral mechanisms from a number of perspectives. The authors emphasize the importance of the study of achromatosia, a rare congenital condition in which the visual mechanisms that mediate day vision are absent while those that mediate night vision remain intact, in isolating those parts of the visual apparatus that are normally associated with night vision. In addition, there is a comprehensive review of ocular conditions that involve a loss of night vision. The final section of the book discusses various types of nightviewing instruments presently available, against the backdrop of what limits night vision in normal observers. Contributions from many of the world's leading experts in vision research makes this unique volume essential reading for all those interested in vision, including opthamologists, optometrists, neurologists, physiologists and psychologists.
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absolute threshold achromat achromat K.N. adaptation pool adapting field Aguilar & Stiles Alpern amplitude Barlow Baylor bleaching bumps c/deg Chapter complete achromat complete achromatopsia cone signals contrast sensitivity dark adaptation desensitization detection discrimination duration effect Enroth-Cugell evidence filters fixation flashed backgrounds Hess increment threshold curve light adaptation light levels log units log10 scotopic td log10 unit luminance mesopic neural neurones noise Nordby normal observer nystagmus ommatidia open circles optical outer segment photoisomerizations photon photon noise photopigment photoreceptors pigment Poisson post-receptoral psychophysical quantal quantum range receptive field receptors reduced response retinal illuminance rhodopsin rod and cone rod mechanism rod monochromat rod photoreceptors rod signals rod vision rod visual system Rushton saturation scotopic trolands sensitivity functions Sharpe slope spatial and temporal spatial frequency spatial summation Stabell stimulus target temporal frequency test flash thresholds measured total colour-blindness trichromat typical visual acuity visual system wavelength