Posters

Vector analysis of Contoura Vision for the correction of myopia and myopic astigmatism

Poster Details

First Author: Y.Lin CHINA

Co Author(s):    H. Su   Y. Zhang                 

Abstract Details

Purpose:

To evaluate the visual outcomes of Contoura Vision with automatic eye tracking system in eyes with myopia and myopic astigmatism.

Setting:

Liuzhou Worker's Hospital, Liuzhou, Guangxi, China

Methods:

In this prospective study, 40 consecutive patients (80 eyes) with moderate myopia and irregular astigmatism were included from January to August 2018 at Liuzhou Worker Hospital. Subjects were randomly divided into an experimental group (40 eyes) that underwent Contoura Vision FS-LASIK and a control group (40 eyes) that underwent wavefront-optimized FS-LASIK. Target refractions of all subjects were plano. Visual outcomes and astigmatic vector analysis were evaluated and compared between preoperatively and 3 months post-operatively.

Results:

The experimental group was better in predictability of astigmatism correction at 3 months after operation. In the experimental group, 80% of eyes had deviation of astigmatic axis within 15° and 35% of eyes had deviation of astigmatic axis within 5°. The number of eyes with residual astigmatism within 0.5D were higher in the experimental group (24 eyes vs 20 eyes in the control group) . Compared with the preoperative, C7 significantly reduced to 0.056±0.030 in the experimental group at 3 months after the procedure (P<0.05), and were significantly lower than those in the control group (P<0.05).

Conclusions:

FS-LASIK appears to be safe and effective for the correction of hyperopia and mixed astigmatism. The uncorrected and corrected distance visual acuity were both impressively improved. The results have important clinical implications for the management of children ametropia.

Financial Disclosure:

None