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Comparison of visual acuity, corneal haze, patient comfort and efficacy between trans epithelial (TPRK) and alcohol assisted photorefractive keratectomy (AAPRK)

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First Author: K.Kudlu INDIA

Co Author(s):    C. A.G   V. Jain   H. Vokuda              

Abstract Details

Purpose:

To compare the visual acuity, corneal haze, patient comfort, safety and efficacy between Trans epithelial (TPRK) and Alcohol Assisted Photorefractive Keratectomy (AAPRK).

Setting:

Prasad Netralaya Super Speciality Eye Hospital

Methods:

This prospective, interventional, case control study included 80 eyes of 40 patients with mild to moderate myopia(-0.50 D to -6.00D) and myopic astigmatism(-0.50D to--2.00D). TPRK and AAPRK was done in right and le eye of same patient respectively and followed up on day 1,day 5,1 month and 6 months post surgery. Outcome measures were epithelial healing me, Mean pain score, Mean vision, corneal haze, Efficacy index and Safety index.

Results:

Pre operative mean(+/-SD) refractive spherical equivalent (MRSE) wert -2.49(+/- 1.68D) in TPRK group and -2.34(+/- 1.87 D) in AAPRK group . Epithelial healing me was significantly less in TPRK (p value- <0.0001). Mean Pain score was less (p value-0.62) whereas haze was more (p value- 0.24) in TPRK, but not statistically significant. Mean uncorrected visual acuity (UCVA) and safety index were similar in both groups. Efficacy index was 0.73 in TPRK group and 0.75 in AAPRK group and there was no statistically significant difference between the two groups.

Conclusions:

TPRK and AAPRK produce almost similar results and both are predictable, effective and safe for correction of myopia and myopic astigmatism.

Financial Disclosure:

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