How much light reaches the retina?
- J. PokornyAffiliated withVisual Sciences Section, University of Chicago
- , V. C. SmithAffiliated withVisual Sciences Section, University of Chicago
There are three major prereceptoral factors governing the amount of light reaching the retina: pupil area, lens optical density and the optical density of the macular pigment. Standardized tabulations are available for each of these factors. These standard tabulations represent well the characteristics of an average observer and thus have application in modelling the behavior of a representative observer. In recent years significant advances have been made in the understanding of receptoral and postreceptoral retinal mechanisms, and it is now feasible to characterize aspects of these processes in individual observers from a relatively limited amount of psychophysical data. This communication addresses the question: are average tabulations for pupil, lens and macular pigment applicable to individual observers or is individual variability so great that independent assessment of these factors need be obtained?
- How much light reaches the retina?
- Book Title
- Colour Vision Deficiencies XIII
- Book Subtitle
- Proceedings of the thirteenth Symposium of the International Research Group on Colour Vision Deficiencies, held in Pau, France July 27–30, 1995
- Book Part
- pp 491-511
- Print ISBN
- Online ISBN
- Series Title
- Documenta Ophthalmologica Proceedings Series
- Series Volume
- Series ISSN
- Springer Netherlands
- Copyright Holder
- Springer Science+Business Media Dordrecht
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