Posters

The effect of preoperative keratometry on visual outcomes after moderate myopic LASIK

Poster Details

First Author: S. Shoukry EGYPT

Co Author(s): I. Saad Othman   H. Gharib                 

Abstract Details

Purpose:

To evaluate visual outcomes in moderately myopic eyes with flat and steep corneas (preoperatively) that have been treated with laser-assisted in situ keratomileusis (LASIK).

Setting:

To evaluate visual outcomes in moderately myopic eyes with flat and steep corneas (preoperatively) that have been treated with laser-assisted in situ keratomileusis (LASIK).

Methods:

Records of 32 eyes with average preoperative keratometry (K) values between 39.9 and 42.0 diopters (D) (flat) were matched with 32 eyes with preoperative K values between 46.0 and 47.2 D (steep) that underwent LASIK between August 2015 and August 2016 for moderate myopia, and were retrospectively reviewed. The primary outcome measures used to determine the effect of preoperative keratometry on visual prognosis were refraction, visual acuity, change in keratometry (∆K), and change in spherical equivalent (∆SE), measured at 1, 3, and 6 months postoperatively.

Results:

Significant differences were found at 6 months postoperatively between the flat group and steep group in SE (P value < 0.001), sphere (P value 0.041), ∆K (P value 0.009), postoperative uncorrected distance visual acuity in flat K reading showed mean value 0.9 ±0.09 and in steep K reading showed mean value 0.8 ±0.2, comparing postoperative uncorrected distance visual acuity between flat and steep average K reading groups showed no significant p value

Conclusions:

Moderately myopic eyes with flatter corneas preoperatively have no better visual prognosis following LASIK compared with moderately myopic eyes with steeper corneas.

Financial Disclosure:

None