J Korean Ophthalmol Soc.  2019 Jun;60(6):528-533. 10.3341/jkos.2019.60.6.528.

Comparison of Hyperopic Photorefractive Keratectomy and LASIK

• Kim DG
• Choi JH
• Kim SW
• Choi TH
• Choe CM

• KMID: 2449705
• DOI: http://doi.org/10.3341/jkos.2019.60.6.528

Abstract

PURPOSE
We compared the results of photorefractive keratectomy (PRK) and laser in situ keratomileusis (LASIK) for the correction of hyperopia.
METHODS
Patients who underwent PRK or LASIK, under +6.00 diopters (D) hyperopia and under −2.00 D astigmatism were included. In total, 21 patients (38 eyes) underwent PRK surgery and 25 patients (41 eyes) underwent LASIK surgery. We compared the visual acuity, refractive error, safety, and efficacy between the two groups.
RESULTS
The manifest refractive spherical equivalent (MRSE) of the PRK and LASIK groups at 1 and 3 months after surgery was significantly different between the two groups (p < 0.05). However, the MRSE was not significantly different at postoperative 6 and 12 months between the two groups. The uncorrected visual acuity (UCVA) of the PRK and LASIK groups at 1 month after surgery was significantly different between the two groups (p < 0.05). However, the UCVA was not significantly different at postoperative 3, 6, and 12 months between the two groups. The best-corrected visual acuity was not significantly different at postoperative 1, 3, 6, and 12 months between the two groups. The safety index was not significantly different between the two groups at postoperative 1, 3, 6, and 12 months. The efficacy index of the PRK group was lower than that of the LASIK group at 1 month after surgery. However, the efficacy index was not significantly different at postoperative 3, 6, and 12 months between the two groups. There was no statistically significant difference between the predictability of the two groups at postoperative 1 year.
CONCLUSIONS
After PRK treatment, temporary myopic deviation was observed after 1 month, but there was no significant difference between the two treatments after 3 months of follow-up. In the correction of hyperopia, there was no significant difference between PRK and LASIK in efficacy or safety.

Keyword

Hyperopia; LASIK; Photorefractive keratectomy

MeSH Terms

Astigmatism
Follow-Up Studies
Humans
Hyperopia
Keratomileusis, Laser In Situ*
Photorefractive Keratectomy*
Refractive Errors
Visual Acuity

Figure

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  Figure 1 Changes in spherical equivalent manifest refraction over time after hyperopic PRK and LASIK. PRK = photorefractive keratectomy; LASIK = laser in situ keratomileusis; D = diopter; Pre-op = preoperation.

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  Figure 2 Uncorrected visual acuity at postoperative 1 year follow up. PRK = photorefractive keratectomy; LASIK = laser in situ keratomileusis.

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  Figure 3 PRK and LASIK predictability. The percentage of eyes within ± 0.5 D and ± 1.0 D. PRK = photorefractive keratectomy; LASIK = laser in situ keratomileusis; D = diopter; SE = spherical equivalent.

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