从前,白内障手术几乎都是在肉眼观察下进行,随着手术显微镜的出现,现今白内障手术都使用手术显微镜。在手术中,一旦固定住显微镜的位置,就不必过多地移动而能够完成整个操作,所以显微外科手术尤适用于眼科。在眼科手术时通常使用手术显微镜的同轴照明,因此当植入人工晶体而成为正视眼时,光束聚焦于视网膜上,有损伤视网膜的可能。根据Calkins等(1980)的实验,在使用手术显微镜的情况下,视网膜上的光量,近视或正视 In the past, cataract surgery was performed mostly under the naked eye. With the appearance of surgical microscopes, surgical cataract surgery is now used. In surgery, microsurgery is particularly suitable for ophthalmology, once the location of the microscope is fixed, without having to move too much to complete the entire procedure. In ophthalmic surgery, co-axial illumination is usually performed using a surgical microscope. Therefore, when an intraocular lens is implanted into an orthoptic eye, the light beam is focused on the retina, which may damage the retina. According to experiments by Calkins et al. (1980), the amount of light on the retina, myopia, or orthoptic