Personalized eye models for negative dysphotopsia assessment

Negative dysphotopsia (ND) is a postoperative condition involving peripheral dark shadows perceived after intraocular lens (IOL) implantation. ND prediction remains difficult due to sensitivity to anatomical variation and IOL geometry. We develop theoretical eye models incorporating realistic IOL geometry, wide-divergence illumination, and patient-specific biometry to compute peripheral irradiance maps. Three IOL platforms with similar designs but different optic edges are evaluated. Personalized eye models are constructed for five patients (six eyes) with ND symptoms, enabling comparison with clinical shadow localization measured using a Harms tangent screen or a Goldmann perimeter. Simulations reproduce the characteristic far-peripheral crescent, with shadow positions between 69° and 75° across platforms, and show sensitivity to biometric factors such as pupil size and visual axis. Simulations show sectorial correspondence with the clinically reported or measured location of the shadows. Under identical biometry and a common edge-scattering assumption, similar IOL platforms with different edge designs yield comparable ND profiles. These findings are presented as an exploratory feasibility assessment intended to inform subsequent pre-clinical and clinical evaluations.