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Hyperopic photorefractive keratectomy enhancement over laser in-situ keratomileusis flap

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Session Details

Session Title: Presented Poster Session: Keratorefractive Results I

Venue: Poster Village: Pod 2

First Author: : S.Awwad LEBANON

Co Author(s): :    M. Ahmad   M. Abdul Fattah           

Abstract Details

Purpose:

To evaluate the safety and efficacy of hyperopic photorefractive keratectomy (PRK) enhancement over laser in-situ keratomileusis (LASIK) flap for the treatment of residual hyperopia.

Setting:

American University of Beirut Medical Center

Methods:

A retrospective chart review of all hyperopic PRK over LASIK with at least 1 year of consistent follow up. 25 eyes of 15 patients, age 54.2 ± 6.2 years, with mean follow up of 3.1 ± 1.52 years, were included. Main outcome measures were spherical equivalent deviation from target (SEDT), manifest refraction spherical equivalence (MRSE), manifest refraction cylinder, uncorrected and corrected distance visual acuity (CDVA).

Results:

Preoperative mean MRSE was +1.73 ± 1.07 D, cycloplegic SE was +1.89±1.06 D, MR cylinder was -0.56±0.60 D. The attempted laser SE was 2.73±0.82 D. Postoperatively, for 1-month, 3-month, 6-month, 12-month, and last follow up, MRSE was -0.88±1.40, -0.78±1.16, -0.18±0.83, +0.02±0.82, +0.21±0.66 D, and +0.46±0.49 D, respectively. The MR cylinder was -0.30±0.49 D at 1-year, and -0.42±0.41 D at last follow up. UDVA of eyes treated for far vision was 0.06±0.1. One eye (4.17%) lost 1 line of CDVA. One eye developed +2 peripheral haze which was visually insignificant.

Conclusions:

Hyperopic PRK over LASIK flap resulted in an expected transient myopic shift for the first 6 months postoperatively, but yielded good and stable refractive results past 1 year of follow up. It seems to be a safe and effective option for enhancing hyperopic eyes after a previous LASIK procedure, and might be a viable alternative to flap relifting, which harbors the potential risk of epithelial ingrowth especially relevant in hyperopic retreatments.

Financial Disclosure:

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