Comparison of Conventional Versus Trans-Epithelial Photorefractive Keratectomy in Hyperopia Treatment: A Contralateral Study

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Hasani Hamidreza; Maskan Mohadeseh

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Journal Paper

Paper Information

Journal: Journal of Iranian Medical Council Year:2023 | Volume:6 | Issue:4 Page(s): 703-711

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Title

Comparison of Conventional Versus Trans-Epithelial Photorefractive Keratectomy in Hyperopia Treatment: A Contralateral Study

Author(s)

Hasani Hamidreza | Maskan Mohadeseh | Issue Writer Certificate

Keywords

Compound hyperopic astigmatism

Conventional photorefractive keratectomy

Hyperopia

Trans-epithelial photorefractive keratectomy

Abstract

Background: This study was planned to compare Trans-epithelial photorefractive keratectomy (TPRK) and Alcohol Assisted Photorefractive Keratectomy (AAPRK) laser vision correction in Hyperopia and Compound hyperopic astigmatism. Methods: This quasi-experimental study was conducted on patients with Hyperopia and hyperopic-astigmatism, whose eye laterality was randomly assigned to undergo TPRK versus AAPRK using SCHWIND AMARIS 1050RS (SCHWIND eye-tech-solutions, Germany). Follow up time was 1, 3, 6 and 12 months after surgery. Results: 112 eyes of 56 patients with mean age of 32. 6 years included, of which 51. 8% were female and 48. 2% were male. Both TPRK and AAPRK methods were able to correct Hyperopia and astigmatism safely and efficiently (p<0. 05 in all cases). Postoperative vision characteristics were similar in both methods (p=0. 23 for sphere, p=0. 52 for cylinder, p=0. 064 for axis, and p=0. 35 for BCVA) postoperatively. Corneal haze was observed in 44% of the patients with a direct strong correlation with Hyperopia severity (r=0. 607). Post-operative pain was observed in 60% of the patients with a direct weak correlation with Hyperopia severity (r=0. 27). Mild photophobia was seen in 42% of the patients with a direct weak correlation between photophobia and Hyperopia severity (r=0. 36). Epithelial healing time lasted an average of 3. 48 days and there was a direct and moderate correlation with Hyperopia severity (r=0. 4). Safety index in TPRK and AAPRK was 0. 54 and 0. 45, respectively, with no significant difference (p=0. 42),Efficacy index was 0. 96 and 0. 9 in TPRK and AAPRK, respectively and there was no significant difference between two groups (p=0. 23). No complication was observed in all of the patients. Conclusion: TPRK and AAPRK laser vision correction are both safe and efficient in Hyperopia and Compound hyperopic astigmatism. There is no significant difference regarding epithelial healing time, post-operative pain and haze formation between two procedures.

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