Abstract
To investigate wavefront aberrations in the entire eye and in the internal optics (lens) and retinal image qualities according to different lenticular opacity types and densities. Forty-one eyes with nuclear cataract, 33 eyes with cortical cataract, and 29 eyes with posterior subcapsular cataract were examined. In each group, wavefront aberrations in the entire eye and in the internal optics and retinal image quality were measured using a raytracing aberrometer. Eyes with cortical cataracts showed significantly higher coma-like aberrations compared to the other two groups in both entire eye and internal optic aberrations (P = 0.012 and P = 0.007, respectively). Eyes with nuclear cataract had lower spherical-like aberrations than the other two groups in both entire eye and internal optics aberrations (P < 0.001 and P < 0.001, respectively). In the nuclear cataract group, nuclear lens density was negatively correlated with internal spherical aberrations (r = −0.527, P = 0.005). Wavefront technology is useful for objective and quantitative analysis of retinal image quality deterioration in eyes with different early lenticular opacity types and densities. Understanding the wavefront optical properties of different crystalline lens opacities may help ophthalmic surgeons determine the optimal time to perform cataract surgery.
Highlights
The accurate assessment of visual function interference by lens opacities can help ophthalmic surgeons choose the best time to perform cataract surgery
We investigated the entire eye and internal optical wavefront aberrations and retinal image qualities that are induced by different lenticular opacity types and densities using the iTrace visual function analyzer
We investigated the correlation between nuclear lens density measured by scheimpflug images and the internal optical aberration in nuclear cataracts
Summary
The accurate assessment of visual function interference by lens opacities can help ophthalmic surgeons choose the best time to perform cataract surgery. Contrast sensitivity declines with age, even in the absence of ocular pathologies, such as manifest cataract, glaucoma, or macular degeneration[3]. This decline in visual capability likely involves deterioration of retinal image qualities due to changes in higher-order aberrations of the crystalline lens[4,5,6]. We investigated the entire eye and internal optical wavefront aberrations and retinal image qualities that are induced by different lenticular opacity types and densities using the iTrace visual function analyzer. We investigated the correlation between nuclear lens density measured by scheimpflug images and the internal optical aberration in nuclear cataracts
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