Quality of vision after topography-guided and wavefront-optimised FS-LASIK

Session Details

Session Title: Corneal Refractive Surgery

Session Date/Time: Tuesday 17/09/2019 | 14:00-16:00

Paper Time: 14:06

Venue: Free Paper Forum: Podium 3

First Author: : C.Zhai CHINA

Co Author(s): :    L. Zhang   Y. Zheng   J. Zhang                       

Abstract Details

Purpose:

To compare the visual performance after topography-guided customized FS-LASIK and wavefront-optimized FS-LASIK treatment in patients having LASIK for myopia.

Setting:

Prospective non-randomized, single site clinical study at Beijing Tongren Hospital

Methods:

A prospective non-randomized controlled clinical study was performed．Seventy eight eyes of 39 myopic patients undergoing LASIK were enrolled in this study and divided into two groups according to patients opinion，with matched demography between the two groups．Topography-guided customized FS-LASIK was performed on 42 eyes of 21 myopia in the Topography-guided group，and Wavefront-optimized FS-LASIK was performed on 36 eyes of 18 patients in the Wavefront-optimized group．Visual acuity, refractive error, higher order aberrations（HOAS）and contrast sensitivity(CS) were compared be¬tween groups before and 6 months after surgery.

Results:

6months postoperatively, 95.2% eyes in topo-guided group and 94.4% in WFO group had UCVA ≥ the preoperative BCVA. There was less induced coma in topo-guided group than WFO group at 6mm pupil. LogCS improved under 12 c/d in the background of mesopic in topo-guided group and decreased under 18 c/d both in the background of mesopic and mesopic&glare in WFO group．LogCS values under 6 c/d，12.0 c/d and 18.0 c/d in the background of mesopic and 18.0 c/d in the background of mesopic&glare in topo-guided group were significantly higher than those in WFO group (all at P<0.05)．

Conclusions:

Topography-guided LASIK has lower higher-order aberrations and better contrast sensitivity than wavefront-optimized LASIK.

Financial Disclosure:

None