Calver Richard, Radhakrishnan Hema, Osuobeni Ebi, O'Leary Daniel
Department of Optometry & Ophthalmic Dispensing, Anglia Ruskin University, East Road, Cambridge CB1 1PT, UK.
Ophthalmic Physiol Opt. 2007 Nov;27(6):584-93. doi: 10.1111/j.1475-1313.2007.00518.x.
We investigated the relationship between myopia and peripheral refraction for distance and near vision by measuring peripheral refractive errors in 10 myopic and 10 emmetropic participants at viewing distances of 2.5 and 0.4 m. Measurements were made at the fovea, and at eccentricities of 10 degrees , 20 degrees and 30 degrees in the temporal and nasal hemispheres of the horizontal visual field. Our results showed that peripheral astigmatism increased with increasing eccentricity, but there was no significant difference between refractive error groups except at 30 degrees eccentricity in the temporal retina. Considering the Mean Spherical Equivalent errors, emmetropes became relatively myopic at peripheral eccentricities, but there was little change in myopes. The effect of viewing distance on astigmatism or Mean Spherical Equivalent error was not significant. Our results do not support the view that myopia is associated with changes in peripheral refraction during distance or near vision.
我们通过测量10名近视参与者和10名正视参与者在2.5米和0.4米视距下的周边屈光不正，研究了近视与远、近视力周边屈光之间的关系。测量在中央凹以及水平视野颞侧和鼻侧半球10度、20度和30度的偏心度处进行。我们的结果表明，周边散光随偏心度增加而增加，但除了颞侧视网膜30度偏心度处外，屈光不正组之间没有显著差异。考虑平均球镜等效误差，正视者在周边偏心度处相对近视，但近视者变化不大。视距对散光或平均球镜等效误差的影响不显著。我们的结果不支持近视与远视力或近视力期间周边屈光变化有关的观点。
