Influence of the dominant eye on visual quality after LASIK

Abstract

Objective To study the influence of the dominant eye on visual quality after LASIK.Methods This study comprised 132 eyes of 66 myope that had standard LASIK. Routine examinations includ-ed uncorrected visual activity, best-corrected visual activity, refraction, aberration, contrast sensitivity, glare sensitivity and subjective questionnaire responses. All patients were followed at least 3 months. Results ①The dominant eye changed in 4 cases at 1 month and still changed in 3 cases at 3 months after LASIK. ②Com-pared dominant eyes with non-dominant eyes, no significant difference was found in uncorrected visual activi-ty, best-corrected visual activity and glare sensitivity before and after LASIK (P>0.05). The degrees of refrac-tion was lower in dominant eyes than that in non-dominant eyes before LASIK (P 0.05). Before LASIK, there was no significant differ-ence in high aberrations between dominant eyes and non-dominant eyes (P>0.05). At post-operative 1 week,the coma in dominant eyes was higher than that in non-dominant eyes (P 0.05). Also there was no significant difference in contrast sensitivity between dominant eyes and non-dominant eyes before LASIK (P>0.05). At post-operative 1 week,the con-trast sensitivity at 3.0c/d、12.0c/d frequency in dominant eyes were better than that in non-dominant eyes (P 0.05).③The visual function of subjective questionnaire responses was better in the dominant-eye-unchanged group than that in the dominant-eye-changed group at post-operative 3 months (P<0.05). Conclusions ①The dom-inant eye may change in a few cases after LASIK. ②Besides in the early postoperative stage, the dominant eye has no significant influence on visual quality after LASIK. ③Maintaining the dominant eye unchanged can im-prove the subjective evaluation of the visual quality after LASIK. Key words: Dominant Eye; LASIK; Visual Quality