Contributed Talks III: The Berkeley Widefield Model Eye

Model eyes are a valuable tool for vision science but in many cases model eyes are designed to be useful for one application (e.g. chromatic aberration) and are often not useful for another (e.g. predicting off-axis visual performance). Moreover, a single model eye cannot capture the variability in the population. The Berkeley widefield model eye (Hastings et al, Journal of Vision, https://doi.org/10.1167/jov.24.7.9) is designed to address some of these limitations (i) by being anatomically plausible (it uses 27 unique biometric parameters to define each eye) and (ii) by not being a single eye, but a collection of 28 emmetropic (-0.50 to +0.50 D) and 20 myopic (-1.5D to - 4.5D) eyes. Using a set of eye models might initially seem daunting for researchers, so this presentation will describe the models and demonstrate ways in which cohorts of model eyes can be used effectively for research purposes. The demonstration will focus on a concentric multizone lens design that aims to slow progression of myopia. It will include an analysis of on and off-axis performance, changes in optical quality with pupil size, and comparisons of optical performance across a range of myopic eyes. A primary outcome of the analysis reveals that concentric multizone lenses generate complex point spread functions under many conditions and that the notion that these lens designs affect defocus in the periphery is too simplistic.