1 September 2006 Reliability of the compensation comparison method for measuring retinal stray light studied using Monte-Carlo simulations
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Abstract
Recently the psychophysical compensation comparison method was developed for routine measurement of retinal stray light. The subject's responses to a series of two-alternative-forced-choice trials are analyzed using a maximum-likelihood (ML) approach assuming some fixed shape for the psychometric function (PF). This study evaluates the reliability of the method using Monte-Carlo simulations. Various sampling strategies were investigated, including the two-phase sampling strategy that is used in a commercially available instrument. Results are given for the effective dynamic range and measurement accuracy. The effect of a mismatch of the shape of the PF of an observer and the fixed shape used in the ML analysis was analyzed. Main outcomes are that the two-phase sampling scheme gives good precision (Standard deviation=0.07 logarithmic units on average) for estimation of the stray light value. Bias is virtually zero. Furthermore, a reliability index was derived from the responses and found to be effective.
© (2006) Society of Photo-Optical Instrumentation Engineers (SPIE)
Joris Coppens, Luuk Franssen, Thomas J. T. P. van den Berg, "Reliability of the compensation comparison method for measuring retinal stray light studied using Monte-Carlo simulations," Journal of Biomedical Optics 11(5), 054010 (1 September 2006). https://doi.org/10.1117/1.2357731 . Submission:
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