Applegate R A, Howland H C
Department of Ophthalmology, University of Texas Health Science Center at San Antonio.
Arch Ophthalmol. 1993 Oct;111(10):1335-42. doi: 10.1001/archopht.1993.01090100043025.
In comparisons of retinal image size within the same eye before and after refractive surgery, a change in the plane of correction from the spectacle to the cornea induces a change in retinal magnification. Comparing retinal image size between eyes of different individuals, a change in the plane of correction as well as the type of ametropia (axial or refractive) interacts to change the retinal magnification. Consequently, comparing acuity before and after refractive surgery without considering the effects of retinal magnification can be misleading. Magnification effects can be large, accounting for a visual acuity increase of 1 line or more. Here we model the magnification induced by refractive surgery in various reference eyes and discuss implications in the context of current clinical trials.
在屈光手术前后同一眼睛内视网膜图像大小的比较中，矫正平面从眼镜到角膜的变化会引起视网膜放大率的改变。在不同个体的眼睛之间比较视网膜图像大小，矫正平面的变化以及屈光不正的类型（轴性或屈光性）相互作用，从而改变视网膜放大率。因此，在不考虑视网膜放大率影响的情况下比较屈光手术前后的视力可能会产生误导。放大率的影响可能很大，可导致视力提高1行或更多。在此，我们对各种参考眼中屈光手术引起的放大率进行建模，并在当前临床试验的背景下讨论其影响。
