University of Geneva, Centre Universitaire d'informatique, Battelle, Batiment A, 7 Route de Drize 1227 Carouge (CH), Switzerland.
University of Lausanne, Center for Public Health and Primary Care Medicine (Unisanté), 44 Rue du Bugnon 1011 Lausanne (CH), Switzerland.
Comput Biol Med. 2024 Sep;179:108903. doi: 10.1016/j.compbiomed.2024.108903. Epub 2024 Jul 26.
Exposure to ambient ultraviolet radiation is associated with various ocular pathologies. Estimating the irradiance received by the eyes is therefore essential from a preventive perspective and to study the relationship between light exposure and eye diseases. However, measuring ambient irradiance on the ocular surface is challenging. Current methods are either approximations or rely on simplified setups. Additionally, factors like head rotation further complicate measurements for prolonged exposures. This study proposes a novel numerical approach to address this issue by developing an analytical model for calculating irradiance received by the eye and surrounding ocular area. The model takes into account local ambient irradiance, sun position, and head orientation. It offers a versatile and cost-effective means of calculating ocular irradiance, adaptable to diverse scenarios, and serves both as a predictive tool and as a way to compute correction factors, such as the fraction of diffuse irradiance received by the eyes. Furthermore, it can be tailored for prolonged durations, facilitating the calculation of radiant dose obtained during extended exposures.
环境紫外线辐射暴露与各种眼部病变有关。因此，从预防的角度和研究光暴露与眼部疾病之间的关系来看，估计眼睛接收到的辐照度是至关重要的。然而，测量眼部表面的环境辐照度具有挑战性。目前的方法要么是近似值，要么依赖于简化的设置。此外，头部旋转等因素使得长时间暴露的测量更加复杂。本研究提出了一种新的数值方法，通过开发一种计算眼睛和周围眼部区域接收到的辐照度的分析模型来解决这个问题。该模型考虑了局部环境辐照度、太阳位置和头部方向。它提供了一种通用且具有成本效益的计算眼部辐照度的方法，适用于各种情况，既可以作为预测工具，也可以计算校正因子，例如眼睛接收到的漫射辐照度的分数。此外，它可以针对长时间进行定制，方便计算在长时间暴露期间获得的辐射剂量。
