Abstract | PURPOSE: To assess the effect of laser in situ keratomileusis ( LASIK) on near visual function in presbyopic patients. DESIGN: Retrospective cohort study. METHODS: Fifty-three eyes of 40 patients 45 years of age and older who had undergone LASIK for high myopia (-6 diopters [D] and over) were included. The minimal add powers for obtaining the best-corrected near visual acuity (add powers) were measured preoperatively and 3 months postoperatively, and the correlations with the powers corrected by LASIK, corneal higher-order aberrations (HOAs), ocular HOAs, and patient ages were evaluated using univariate analysis. Factors correlated with the changes in add powers were evaluated further by multivariate analysis. RESULTS: The mean ± standard deviation patient age was 50.0 ± 4.1 years; the power corrected by LASIK was -7.56 ± 1.06 D. The mean add power was 1.80 ± 0.60 D preoperatively, which increased significantly (P < .001) to 2.18 ± 0.69 D postoperatively. Significant correlations with the increased add powers were detected with age (P = .01) and the power corrected by LASIK (P = .04) but not with corneal and ocular HOAs (P > .05). Multivariate analysis showed that only age was correlated significantly (P = .01). The percentage of eyes with increased add powers of 0.5 D or more was 60.4%, which was significantly (P = .02) higher in younger patients. CONCLUSIONS: This study verified the apparent progression of presbyopia after LASIK and the importance of obtaining informed consent from patients, especially those with early presbyopia.
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Authors | Yukari Tsuneyoshi, Kazuno Negishi, Megumi Saiki, Ikuko Toda, Kazuo Tsubota |
Journal | American journal of ophthalmology
(Am J Ophthalmol)
Vol. 158
Issue 2
Pg. 286-92
(Aug 2014)
ISSN: 1879-1891 [Electronic] United States |
PMID | 24853261
(Publication Type: Journal Article)
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Copyright | Copyright © 2014 Elsevier Inc. All rights reserved. |
Topics |
- Disease Progression
- Female
- Follow-Up Studies
- Humans
- Keratomileusis, Laser In Situ
(methods)
- Male
- Middle Aged
- Myopia
(physiopathology, surgery)
- Postoperative Period
- Presbyopia
(etiology, physiopathology)
- Refraction, Ocular
- Retrospective Studies
- Time Factors
- Treatment Outcome
- Visual Acuity
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