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- Title
Spherical aberration reduction in nuclear cataracts.
- Authors
Lee, Jong-Hyuck; Choo, Hun; Kim, Sun
- Abstract
Purpose: To measure higher-order aberrations (HOAs) in nuclear cataracts and to investigate spherical aberration changes with nuclear cataract progression. Methods: A total of 102 eyes of older subjects (>50 years) were classified based on the nuclear opalescence (NO) grading of the Lens Opacities Classification System III: Group 1 (< NO2, 35), 2 (NO2, 23), 3 (NO3, 23), and 4 (≥ NO 4:21 eyes). Wave front measurements were performed with a Hartmann-Shack aberrometer. To investigate lenticular spherical aberration, HOAs were examined in 28 eyes before and after phacoemulsification, followed by insertion of an aberration-free intraocular lens. The relationship between lens opacity grade and ocular and lenticular spherical aberrations were investigated. Results: Mean spherical aberrations in groups 1, 2, 3, and 4 were 0.25 ± 0.10, 0.16 ± 0.13, 0.12 ± 0.15, and 0.10 ± 0.20 μm, respectively, and showed a significant difference with nuclear opacity grading ( p = 0.001). The spherical aberration showed negative associations with nuclear opacity grading ( r = −0.408, p < 0.001). The predominant change in HOAs after phacoemulsification was an increase in spherical aberration, and 86 % of lenticular spherical aberrations were presumed to have negative values. The lenticular spherical aberration was negatively correlated with nuclear opacity severity ( r = −0.409, p = 0.031). Conclusions: Ocular spherical aberration decreases with the progression of nuclear cataracts due to the negative correlation between lenticular spherical aberration and nuclear opacity severity.
- Subjects
SPHERICAL aberration; TREATMENT of cataracts; INTRAOCULAR lenses; PHACOEMULSIFICATION; OPTICAL aberrations; OPACITY (Optics)
- Publication
Graefe's Archive of Clinical & Experimental Ophthalmology, 2016, Vol 254, Issue 6, p1127
- ISSN
0721-832X
- Publication type
Article
- DOI
10.1007/s00417-016-3316-z