Contrast Sensitivity After LASIK, LASEK, and Wavefront-guided LASEK With the VISX S4 Laser

Contrast Sensitivity After LASIK, LASEK, and Wavefront-guided LASEK With the VISX S4 Laser
April 2007
Tae Wan Kim, MD; Won Ryang Wee, MD; Jin Hak Lee, MD; Mee Kum Kim, MD
Journal of Refractive Surgery Vol. 23 No. 4

PURPOSE
To evaluate the changes in contrast sensitivity and glare after corneal refractive surgery for moderate myopia.

METHODS
The study comprised 267 eyes of 149 patients who underwent LASIK, laser epithelial keratomileusis (LASEK), or wavefront-guided LASEK with the VISX STAR S4. Contrast sensitivity was measured with VCTS 6500 before surgery and at 2 and 6 months postoperatively. Glare was evaluated using questionnaires and the ALC glare test at last follow-up. Contrast sensitivity at 2 and 6 months was compared with preoperative contrast sensitivity in each group. Glare sensitivity in each group was compared to normal controls.

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