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. 2018 May;59(6):2411–2421. doi: 10.1167/iovs.17-22874

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Copyright 2018 The Authors

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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Dark adaptation curve showing the derivation of parameters from Equation A1. Derived parameters were (log cd/m²), the asymptotic or “final” threshold; Ti (log cd/m²), the elevation in threshold above the asymptote prior to the rod–cone break; (min), the time to the rod–cone break. The recovery parameter R (decades/min) describes the rate of rod decay and can be thought of as the curvature of the fit. The black dotted line indicates the criterion stimulus intensity (−3.1 log cd/m²) used for calculation of RIT (Equation A2).

Inline graphic — Dark adaptation curve showing the derivation of parameters from Equation A1. Derived parameters were (log cd/m²), the asymptotic or “final” threshold; Ti (log cd/m²), the elevation in threshold above the asymptote prior to the rod–cone break; (min), the time to the rod–cone break. The recovery parameter R (decades/min) describes the rate of rod decay and can be thought of as the curvature of the fit. The black dotted line indicates the criterion stimulus intensity (−3.1 log cd/m²) used for calculation of RIT (Equation A2).