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E.K. Chiu, M.P. Rubin, S. Rao; Preservation of Contrast Sensitivity After LASIK and Clear Lens Extraction With PCIOL Placement in the Treatment of Mild to Moderate Hyperopia . Invest. Ophthalmol. Vis. Sci. 2005;46(13):4361.
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Purpose: To compare the efficacy of LASIK and clear lens extraction with PCIOL placement (CLE) for the treatment of mild to moderate hyperopia (+1 to +6 D) in patients over 40 years of age. In particular, we evaluated the impact of these procedures on the preservation of contrast sensitivity as well as post–operative visual acuity. Methods: A retrospective review was performed on consecutive patients who underwent refractive correction for low to moderate hyperopia. Hyperopic LASIK was performed on 50 eyes of 26 patients. Phacoemulsification and IOL implantation was performed on 50 eyes of 25 patients. Results: In the LASIK group, postoperative UCVA was 20/40 or better in all eyes, with a median UCVA of 20/25 (range 20/20 to 20/40.) Postoperative spherical equivalent was 0.12D (–0.75 to + 0.75) reduced from preoperative level of 2.75D. In the CLE group, postoperative uncorrected visual acuity (UCVA) was 20/40 or better in all eyes, with a median UCVA of 20/25 (range 20/20 to 20/40.) Postoperative spherical equivalent was 0.155D (–0.75 to +0.75) reduced from preoperative level of 3.59D. Contrast sensitivity curves decreased by two or more lines in two hyperopic CLE eyes (4%) and 7 hyperopic LASIK eyes (14%.) Conclusions: In low to moderate hyperopia, clear lens extraction with IOL implantation preserved contrast sensitivity at a higher rate than LASIK. Additionally, CLE is a safe procedure and yields comparable postoperative UCVA to LASIK.
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