人眼在不同环境光照条件下的折射行为

Thokozile I. Metsing, Anthony Carlson
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引用次数: 0

摘要

背景:调节眼调节系统是一个重要的现象,允许在不同距离的最佳视力。目的:比较人眼在不同环境光照条件下对不同目标亮度的折射行为。环境:对约翰内斯堡大学视光系的参与者进行自动折射测量。方法:5名年龄在20至25岁之间的非洲单一种族的参与者,在明亮和黑暗的房间中使用照明和黑暗的目标(左、右)对每个参与者的右眼进行40次连续的自动折射(Nidek AR 610)测量;在明亮和黑暗的房间(LD和DD)中的暗目标。结果:除1名受试者出现近视移位外,所有受试者的屈光状态均有改变。方差-协方差和平均值的最大显著差异约为2.40屈光度(D)。其他参与者的平均值变化大致相同,在1.00 D和1.50 D之间变化。对于DL到DD条件,除一人外,所有参与者都经历了约0.50 d的远视移位。结论:人眼的屈光行为似乎取决于环境光条件以及目标照明或亮度。贡献:该研究具有科学性和临床性,重点研究不同光照条件下折射行为的变化,属于该期刊的研究范围。关键的见解是,在不同的环境条件下,眼睛的折射行为会发生变化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The refractive behaviour of the human eye under different ambient lighting conditions
Background: Adjustment of the ocular accommodative system is an important phenomenon allowing for optimal vision at different distances. Aim: The study compared the refractive behaviour of the human eye under different ambient lighting conditions for different target brightness. Setting: Auto-refraction measurements were taken of the participants in the Department of Optometry at the University of Johannesburg. Methods: Five African participants from a single ethnic group aged between 20 years and 25 years, had 40 successive auto-refractor (Nidek AR 610) measurements taken on the right eye of each participant in a bright and dark room using the illuminated and dark targets (LL and DL); dark target in the illuminated and dark room (LD and DD). Results: A change in the refractive state of all participants was observed on LL and LD, except for one, who experienced myopic shifts. The largest significant difference in the variance-covariances and the means was approximately 2.40 dioptre (D). The other participants’ shifts in means were approximately the same and varied between 1.00 D and 1.50 D stigmatic shift. For the DL to DD conditions all participants, except for one, underwent a hyperopic shift of about 0.50 D. Conclusion: The refractive behaviour of the human eye appears to be dependent on ambient light conditions as well as target illumination or luminance. Contribution: The study is scientific and clinical, and focuses on changes in refractive behaviour under different lighting conditions, falling within the scope of the journal. Key insights are that there is a change in the refractive behaviour of the eye under different ambient conditions.
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来源期刊
African Vision and Eye Health
African Vision and Eye Health Health Professions-Optometry
CiteScore
1.00
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发文量
46
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