Fejer T P, Girgis R
Division of Ophthalmology, Women's College Hospital, Toronto.
Can J Ophthalmol. 1992 Jun;27(4):172-6.
A total of 380 randomly selected patients aged 16 to 80 years who did not have eye disease underwent testing for night myopia between August and October 1989 with a laser speckle generator under both photopic and scotopic conditions. For the first 308 subjects the speckles were continuously run, and for the next 72 subjects a timer was used to minimize the accommodative stimulus. An increase in myopia of 0.75 dioptres or more from the photopic to the scotopic state, equivalent to a visual acuity of 20/45 or less, was considered indicative of night myopia. Overall, 17% of the subjects were found to have night myopia. Of the 26 subjects aged 16 to 25 years in the timer group 38% had night myopia of 0.75 D or more, 23% had night myopia of 1.00 D or more, and 4% had night myopia of 2.50 D, which is equivalent to an acuity of 20/265. The results indicate that driving in the dark could create visual difficulties for certain younger patients that a night myopic correction would eliminate.
1989年8月至10月期间，共有380名年龄在16至80岁之间、无眼部疾病的随机选取患者，在明视和暗视条件下，使用激光散斑发生器进行了夜间近视测试。对于前308名受试者，散斑持续运行，对于接下来的72名受试者，使用定时器以尽量减少调节刺激。从明视状态到暗视状态近视增加0.75屈光度或更多，相当于视力为20/45或更低，被认为是夜间近视的指征。总体而言，17%的受试者被发现患有夜间近视。在定时器组的26名16至25岁的受试者中，38%的人夜间近视度数达到或超过0.75 D，23%的人夜间近视度数达到或超过1.00 D，4%的人夜间近视度数为2.50 D，这相当于视力为20/265。结果表明，在黑暗中驾驶可能会给某些年轻患者带来视觉困难，而夜间近视矫正可以消除这些困难。
