Coroneo M T, Müller-Stolzenburg N W, Ho A
Department of Ophthalmology, University of New South Wales, Randwick, Australia.
Ophthalmic Surg. 1991 Dec;22(12):705-11.
Peripheral focusing of light by the anterior eye may provide a unifying concept to explain the location and etiology of sun-related eye conditions (ophthalmohelioses). Using a bovine eye model, along with computer-assisted ray-tracing techniques to model limbal focusing, we demonstrated a correlation between the locations of the foci of scattered incident light (resulting in a 20-fold concentration of light at the limbus) and the usual locations of pterygium and cortical cataract. These findings suggest the need for improved ocular protective devices, particularly ones that provide lateral protection of the eye against the increased ultraviolet insolation resulting from thinning of the ozone layer.
眼前部对光线的周边聚焦作用或许能提供一个统一的概念，用以解释与阳光相关的眼部疾病（日光性眼病）的发病部位及病因。我们使用牛眼模型，并结合计算机辅助光线追踪技术来模拟角膜缘聚焦，结果表明，散射入射光的焦点位置（导致角膜缘处光线强度增强20倍）与翼状胬肉和皮质性白内障的常见发病部位之间存在关联。这些发现提示，有必要改进眼部防护装置，尤其是能为眼睛提供侧向防护，以抵御因臭氧层变薄导致的紫外线照射增加的防护装置。
