Purpose:

To describe the visual outcomes and predictors of achieving refractive target of hyperopic photorefractive keratectomy (PRK) and laser in situ keratomileusis (LASIK) in a large patient population.

Methods:

The records of a large refractive surgery center were retrospectively searched to identify all patients who had undergone hyperopic PRK or LASIK between 1/1/2008 and 4/1/2015 with at least 90 days of followup. Descriptive statistics were generated, and a generalized linear method statistical model was used to analyze the differences between the two procedures, and among different layers of preoperative characteristics.

Results:

A total 25,587 patients (54,464 eyes) underwent LASIK and 4,098 eyes (2,036 patients) underwent PRK met the inclusion criteria. The duration of follow up was 252 (149-471) days for LASIK patients and 276 (167-456) days for PRK patients (p<0.001). at="" their="" last="" visit,="" 69.1%="" of="" lasik="" eyes="" and="" 67.7%="" of="" prk="" eyes="" were="" ±0.5d="" of="" plano="" and="" 88.8%="" of="" lasik="" eyes="" and="" 86.5%="" of="" prk="" eyes="" were="" ±1d="" of="" plano=""><0.001). when="" controlling="" for="" possible="" confounding="" factors,="" patients="" undergoing="" prk="" were="" less="" likely="" to="" be="" within="" 0.5d="" of="" plano="" (odds="" ratio="" 0.85,="" 95%="" ci="" 0.78-0.92,=""><0.001).>

Conclusions:

Hyperopic PRK and LASIK yielded good visual outcomes in this study. Eyes that underwent hyperopic LASIK were slightly more likely to achieve their intended refraction than that underwent hyperopic PRK, especially for those with thicker corneas.