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International Ophthalmology

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01-06-2018 | Original Paper

Comparison of ReLEx SMILE and PRK in terms of visual and refractive outcomes for the correction of low myopia

Authors: Sri Ganesh, Sheetal Brar, Utsav Patel

Published in: International Ophthalmology | Issue 3/2018

Abstract

Purpose

To compare the objective and subjective quality of vision after femtosecond laser-assisted small incision lenticule extraction (SMILE) and photorefractive keratectomy (PRK) for low myopia.

Methods

One hundred and twenty eyes from 60 patients (34 females, 26 males) undergoing bilateral correction of low myopia (≤−4 D SE) with either ReLEx SMILE or PRK were included. Visual acuity, contrast sensitivity and higher-order aberrations were recorded preoperatively and compared postoperatively. A quality of vision questionnaire was scored and analyzed 3 months postoperatively.

Results

At 3 months, the SMILE group had significantly better uncorrected and corrected distant visual acuity (CDVA), compared to PRK group (p = 0.01). Post-op spherical equivalent (SE) was comparable in both groups (SMILE = −0.15 ± 0.19 D, PRK = −0.14 ± 0.23 D, p = 0.72). However, SE predictability was better in SMILE group with 97% eyes within ±0.05 D compared to 93% eyes in the PRK group. Total higher-order aberrations (HOAs) were significantly higher in PRK compared to the SMILE group (p = 0.022). The SMILE group demonstrated slightly better contrast sensitivity, which was significant at spatial frequency of 12 cpd (p = 0.03). Four eyes in the PRK group had loss of CDVA by one line due to mild haze.

Conclusions

Both SMILE and PRK were effective procedures for correction of low myopia. However, SMILE offered superior quality of vision and patient satisfaction due to better postoperative comfort and lower induction of aberrations at 3 months.

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Title: Comparison of ReLEx SMILE and PRK in terms of visual and refractive outcomes for the correction of low myopia
Authors: Sri Ganesh
Sheetal Brar
Utsav Patel
Publication date: 01-06-2018
Publisher: Springer Netherlands
Published in: International Ophthalmology / Issue 3/2018
Print ISSN: 0165-5701
Electronic ISSN: 1573-2630
DOI: https://doi.org/10.1007/s10792-017-0575-6

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Comparison of ReLEx SMILE and PRK in terms of visual and refractive outcomes for the correction of low myopia

Abstract

Purpose

Methods

Results

Conclusions

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusions

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