Dain Stephen J
Optics & Radiometry Laboratory, School of Optometry and Vision Science, University of New South Wales, Sydney, NSW, Australia.
Clin Exp Optom. 2012 Mar;95(2):129-39. doi: 10.1111/j.1444-0938.2012.00704.x. Epub 2012 Feb 13.
The selection of lens materials for non-prescription personal protective equipment has been a relatively simple process and has its origins in many studies around the 1970s. The viable materials available at that time were tempered glass, hard resin (n = 1.50) and polycarbonate. The modern spectacle non-prescription eye protector of choice is inevitably hard coated polycarbonate, which has exemplary impact resistant properties. In the prescription lens area, there is a bewildering array of materials of various refractive indices with a variety of coatings. The selection of an ophthalmic lens has optical and cosmetic considerations ahead of impact resistance. In complying with the Australian/New Zealand standard on prescription eye protection, adequate impact resistance must rate as the foremost requirement, with optical and cosmetic considerations as important but lesser considerations. In this review, the evidence on impact resistance of the available materials is presented, the standards set for testing impact resistance are detailed and some guidance is provided for the selection of prescription eye protection materials.
非处方个人防护装备镜片材料的选择一直是个相对简单的过程，其起源可追溯到20世纪70年代左右的诸多研究。当时可用的可行材料有钢化玻璃、硬树脂（n = 1.50）和聚碳酸酯。现代非处方眼镜式护目镜的首选材料不可避免地是硬涂层聚碳酸酯，它具有出色的抗冲击性能。在处方镜片领域，有一系列令人眼花缭乱的、具有各种折射率并带有各种涂层的材料。选择眼科镜片时，光学和美观方面的考虑要优先于抗冲击性。在符合澳大利亚/新西兰关于处方眼保护的标准时，足够的抗冲击性必须被视为首要要求，光学和美观方面的考虑虽也重要，但相对次要。在本综述中，将呈现现有材料抗冲击性的证据，详细说明抗冲击性测试所设定的标准，并为处方眼保护材料的选择提供一些指导。
