Abstract
Several recent analyses of the Short-wavelength-sensitive (S-) cone threshold vs. retinal illuminance (TVR) function suggest that it should be possible to differentiate a number of potential types of insult with psychophysical procedures. An assumption frequently made in modelling sites of disease action is that S-cone sensitivity is independent of the activity of L- and M-cones. We review increment threshold S-cone isolation techniques that have been used in clinical measurements. These experimental conditions produce S-cone sensitivity estimates which include sensitivity regulation of the S-cone system by the L- and M-cone types. TVR functions measured with a discrimination paradigm along a tritan line yield a different pattern of sensitivity regulation by L- and M-cones. For some purposes paradigms incorporating equiluminant stimuli along tritan lines may be of utility in estimating S-cone sensitivity.
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Pokorny, J., Smith, V.C. (1995). Assessment of S-cone sensitivity. In: Drum, B., et al. Colour Vision Deficiencies XII. Documenta Ophthalmologica Proceedings Series, vol 57. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-0507-1_35
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DOI: https://doi.org/10.1007/978-94-011-0507-1_35
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