One year outcomes of photorefractive keratectomy with the application of mitomycin-C in the treatment of mild to moderate hyperopia

Habibollahi, Alireza; Hashemi, Hassan; Seyedian, Mohammad Amin; Mehravaran, Shiva; Asgari, Soheila; Habibollahi, Sam; Habibollahi, Sina; Khabazkhoob, Mehdi

doi:10.4103/0974-9233.167821

Cited by 5 publications

(2 citation statements)

References 22 publications

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“…Several studies have shown the safety and efficacy of different types of refractive surgeries such as LASIK and PRK in the correction of myopia or hyperopia with low to moderate astigmatism. 8 , 9 , 10 Katz et al. 11 have compared the 6-month results of LASIK and PRK for the correction of astigmatism greater than 3.0 D and concluded that both procedures have similar safety (1.01 ± 0.17 vs. 1.10 ± 0.26), efficacy (0.74 ± 0.19 vs. 0.76 ± 0.32), and predictability (67% vs. 65% within ±0.5 D), respectively.…”

Section: Introductionmentioning

confidence: 99%

Two-year results of femtosecond assisted LASIK versus PRK for different severity of astigmatism

Miraftab

Hashemi

Asgari

2018

Journal of Current Ophthalmology

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PurposeTo compare two-year results of femtosecond laser assisted LASIK (femto-LASIK) and photorefractive keratectomy (PRK) in terms of astigmatism correction in patients with less than 2.0 diopters (D) of spherical error and more than 2.0 D of cylinder error.MethodsIn this retrospective study, data were extracted from 100 patient charts. The two study groups were matched by age, gender, and baseline uncorrected distance visual acuity (UDVA) and refractive astigmatism (RA). Preoperative astigmatism was categorized as mild: 2.00 to <3.00 D, moderate: 3.00 to <4.00 D, and severe: ≥4.00 D.ResultsMean RA in the femto-LASIK and PRK groups was respectively −3.15 ± 0.94 D (−7.00 to −2.00 D) and −3.29 ± 0.95 D (−6.25 to −2.00 D) at baseline (P = 0.284), and −0.61 ± 0.40 D and −0.62 ± 0.60 D one year after surgery (P = 0.674), but significantly lower in the femto-LASIK group (−0.61 ± 0.39 vs. −0.83 ± 0.56 D, P = 0.021) at 2 years when the rate of residual astigmatism more than 1.0 D was 6.3% in the femto-LASIK and 19.6% in the PRK group (P = 0.046). Mean UDVA in the femto-LASIK group (0.02 ± 0.05 logMAR) was better than the PRK group (0.06 ± 0.10 logMAR) (P = 0.025). Mean corrected distance visual acuity (CDVA) was not significantly different between groups (0.01 ± 0.03 vs. 0.01 ± 0.04 logMAR, P = 0.714). Both groups had 1–4 Snellen lines CDVA improvement. The three subgroups of baseline astigmatism did not differ significantly in terms of residual astigmatism (all P > 0.05). However, in subgroups with ≥4.00 D cylinder, there was less astigmatic regression at 1 year in the femto-LASIK group (0.28 ± 0.43 D) than the PRK group (0.54 ± 0.68 D) (P = 0.007).ConclusionsOur results pointed to better two-year results with femto-LASIK in the treatment of different degrees of astigmatism. UDVA improvement was superior with femto-LASIK, but the two methods did not significantly differ in terms of CDVA improvement.

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Section: Introductionmentioning

confidence: 99%

Two-year results of femtosecond assisted LASIK versus PRK for different severity of astigmatism

Miraftab

Hashemi

Asgari

2018

Journal of Current Ophthalmology

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“…The use of MMC in PRK has helped minimize postoperative haze, and the haze reported in our study is similar to what has been reported by other authors using MMC with alcohol, mechanical, and transepithelial PRK. 8,9,23,35,36 In addition, it was significantly better than the haze reported in earlier studies in which PRK was performed without the use of MMC, resulting in up to 40% of eyes developing haze, including the development of Salzmann nodular degeneration in some eyes. 5 In addition, the application of SmartPulse technology, and other excimer algorithms designed to optimize the ablated surface, is expected to lead to the development of less haze in the periphery of the stromal bed in PRK-treated hyperopic eyes.…”

Section: Discussionmentioning

confidence: 83%

Long-term results of hyperopic ablations using alcohol-assisted PRK and FS-LASIK: comparative study

Asroui

Arba-Mosquera

Torbey

et al. 2023

J Cataract Refract Surg

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Twelve-month outcomes of single-step transepithelial photorefractive keratectomy for moderate hyperopia and hyperopic astigmatism

et al. 2023

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Background Conventional mechanical or alcohol-assisted photorefractive keratectomy (PRK) techniques for correction of hyperopia and hyperopic astigmatism were associated with inconsistent results. The aim of this study is to evaluate the 12-month visual and refractive outcomes of the relatively new single-step transepithelial photorefractive keratectomy (TE-PRK) for moderate hyperopia and hyperopic astigmatism. Methods This is a prospective interventional study. Forty-eight eyes of 30 patients with moderate hyperopia or hyperopic astigmatism with a cycloplegic spherical equivalent refraction (SEQ) between 2.0 and 4.5 diopters (D) underwent single-step StreamLight® TE-PRK using EX500 excimer laser (Alcon Laboratories, USA). The main outcome measures were recorded at 6 and 12 months postoperatively including assessment of logarithm of the minimum angle resolution (logMAR) uncorrected and corrected distance visual acuity (UDVA, CDVA), cycloplegic refraction, corneal topographic changes as well as post-PRK peripheral haze grading. Results The mean preoperative cycloplegic SEQ was significantly reduced from 3.21 ± 0.61 D to 0.35 ± 0.04 D and 0.41 ± 0.04 D at 6 and 12 months, respectively (P < 0.001). The mean preoperative UDVA significantly improved from 0.53 ± 0.02 logMAR to 0.07 ± 0.01 logMAR and 0.08 ± 0.01 logMAR at 6 and 12 months, respectively (P < 0.001) while the mean preoperative logMAR CDVA showed non-significant change over time throughout the study (P = 0.135). At the end of the study, 41 eyes (85.4%) achieved UDVA of 20/25 or better and no eye lost any lines of CDVA. Thirty-eight eyes (79.1%) had a postoperative cycloplegic cylinder of 0.5 D or less at 12 months. The mean preoperative mean keratometry showed significant increase at 6 and 12 months postoperatively (P < 0.001) while there was no significant change between the two postoperative visits denoting topographic stability (P = 0.058). The mean postoperative Q value at 6 and 12 months showed a significant prolate shift (P < 0.001). No haze was observed in 62.5% and 85.4% of the enrolled eyes at 6 and 12 months, respectively. Conclusions Single-step StreamLight® TE-PRK for moderate hyperopia and hyperopic astigmatism achieved acceptable visual and refractive outcomes. Trial registration: (Clinicaltrials.gov): NCT05261685, 2 March 2022, retrospectively registered, https://clinicaltrials.gov/ct2/show/NCT05261685

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One year outcomes of photorefractive keratectomy with the application of mitomycin-C in the treatment of mild to moderate hyperopia

Cited by 5 publications

References 22 publications

Two-year results of femtosecond assisted LASIK versus PRK for different severity of astigmatism

Two-year results of femtosecond assisted LASIK versus PRK for different severity of astigmatism

Long-term results of hyperopic ablations using alcohol-assisted PRK and FS-LASIK: comparative study

Twelve-month outcomes of single-step transepithelial photorefractive keratectomy for moderate hyperopia and hyperopic astigmatism

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