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Long-term course of contrast sensitivity in eyes after laser-assisted in-situ keratomileusis for myopia.
- Source :
-
Indian Journal of Ophthalmology . Dec2020, Vol. 68 Issue 12, p2981-2984. 4p. - Publication Year :
- 2020
-
Abstract
- <bold>Purpose: </bold>To evaluate the long-term contrast sensitivity (CS) after laser in-situ keratomileusis (LASIK) for myopia.<bold>Methods: </bold>This retrospective, single-center, cohort study involved 190 eyes of 95 patients who underwent bilateral LASIK between January 2001 and October 2007. This study includes patients who underwent CS and higher-order aberration (HOA) measurements in a five-year postoperative period. For all enrolled patients, visual acuity, refractive error (RE) in diopters (D), CS at 3-, 6-, 12-, and 18-cycles per degree (cpd), and HOA in a 4 mm area of the dilated pupil were measured before surgery and 6 months, 1 year, and 5 years after it.<bold>Results: </bold>The mean RE measured before the surgery and after 6 months, 1 year, and 5 years after was -6.08 ± 2.50D, -0.26 ± 0.65D, -0.28 ± 0.65D, and -0.48 ± 0.80D, respectively. There were no clinically significant changes between preoperative results and the measures taken 6 months, 1 year, and 5 years after surgery. The slight increase in HOA had little effect on CS over the mid to long-term postoperative period.<bold>Conclusion: </bold>Our findings show that CS does not clinically change post LASIK. Although we were unable to identify the specific mechanism, we theorize that after LASIK there is a possibility for the compensation of HOA. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03014738
- Volume :
- 68
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Indian Journal of Ophthalmology
- Publication Type :
- Academic Journal
- Accession number :
- 147338706
- Full Text :
- https://doi.org/10.4103/ijo.IJO_1916_19