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. 2023 Mar 17;6:5. doi: 10.1186/s42492-023-00132-9

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Fig. 2 — Schematic of distributed ray tracing. Rays starting from the retina are traced through the eye, sampling the back surface of the crystalline lens to determine their outgoing directions. Mostafawy et al. modeled the retina as a flat surface (left), whereas more recent approaches often use a spherical representation (right)