Posters

Quality of vision following wavefront-guided laser in-situ keratomileusis (LASIK): a prospective study

Poster Details

First Author: E. Manche UNITED STATES

Co Author(s):    W. Lee                    

Abstract Details

Purpose:

To prospectively evaluate subjective quality of vision in myopic patients undergoing wavefront-guided laser in situ keratomileusis (LASIK)

Setting:

Academic refractive surgical service

Methods:

Forty-nine patients undergoing LASIK were prospectively given a validated, Rasch-tested, linear scaled self-administered Quality of Vision (QoV) questionnaire, prior to surgery and again at 1 year post-operatively. The survey consisted of questions pertaining to subjective quality of vision: glare, haloes, starbursts, hazy vision, blurred vision, distortion, double or multiple images, fluctuation in vision, focusing difficulties and difficulty judging distance or depth perception. Main outcome measures were responses to individual survey questions, which were compared between the pre-op visit and the 1 year post-op visit. Visual acuity, refractive error, and higher order aberrations were also measured and compared pre and post-operatively.

Results:

The study sample consisted of 49 patients ranging in age from 24 to 46 years old. Mean pre-op UDVA was 1.3 on the logMAR scale (SD 0.41, 95% CI 1.20-1.38) compared to -0.08 (SD 0.09, 95% CI -0.11 - -0.04) at 1 year post-op (p<0.0001). The mean pre-op spherical equivalent was -4.74 (SD 2.1, 95% CI -5.21 - -4.28) compared to -0.21 (SD 0.25, 95% CI -0.42 - -0.12) at 1 year post-op (p<0.0001). At 1 year post-operatively patients were less likely to report difficulty with judging distance or depth perception (28% vs 0%, p = 0.022). On all other measures of subjective quality of vision there were no statistically significant differences between the pre-op and 1 year post-op visits.

Conclusions:

There were no significant changes in any quality of vision measurements from baseline to the twelve month postoperative visit with the exception of an improvement in judging distance or depth perception after LASIK surgery. Wavefront-guided LASIK does not appear to adversely affect subjective quality of vision.

Financial Disclosure:

One or more of the authors receives consulting fees, retainer, or contract payments from a company producing, developing or supplying the product or procedure presented