Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/3793
Title: Evaluation of the effect of optic zone diameter selection on high-order aberrations in photorefractive keratectomy excimer laser treatment
Authors: Özülken, Kemal
Gökçe, Sabite Emine
305548
Keywords: Higher-order aberrations
Optical zones
Photorefractive keratectomy
Refractive surgery
Spherical aberration
Issue Date: Sep-2020
Publisher: Springer
Source: Ozulken, K., & Gokce, S. E. (2020). Evaluation of the effect of optic zone diameter selection on high-order aberrations in photorefractive keratectomy excimer laser treatment. Lasers in Medical Science, 1-5.
Abstract: To evaluate the postoperative higher-order aberration (HOA) differences and visual quality outcomes of wavefront-optimised photorefractive keratectomy (PRK) surgery in 6.5-mm and 7.0-mm optic zones. The study included 136 eyes of 68 patients who underwent wavefront-optimised PRK surgery for myopia or myopia with astigmatism. Q values, third-order coma (Z [3, 1] and Z [3, ? 1]), third-order trefoil (Z [3] and Z [3, ? 3]), fourth-order spherical aberration (Z [4, 0]) and aberration coefficients were evaluated before surgery and 6 months after surgery. All patients underwent ophthalmic examinations that included visual acuity, central corneal thickness and intraocular pressure. The mean age of participants was 25.5 ± 6.7 (18–50 years). A total of 38 (55.88%) participants were male and 30 (44.12%) were female. In half of the eyes (n = 68), the 6.5-mm optic zone was selected (group 1), while the 7.0-mm optic zone was selected for other half (n = 68; group 2). No statistically significant difference was observed between the two groups in terms of preoperative best corrected visual acuity (BCVA) and postoperative uncorrected visual acuity (UCVA) (p = 0.45 and p = 0.22, respectively). The 7.0-mm optical zone was found to be associated with lower aberration coefficient values and lower Z [4, 0] spherical aberrations of HOAs. Although the 6.5-mm optical zone was associated with an increase in most wavefront aberration variables, measurements were not statistically different between two groups other than aberration coefficients and Z [4, 0] spherical aberrations. Photorefractive keratectomy performed with both the 6.5-mm and 7.0-mm optical zone diameters is very successful in correcting refractive errors. For some HOAs, treatment with the 7.0-mm optical zone seems to be more advantageous.
URI: https://hdl.handle.net/20.500.11851/3793
https://doi.org/10.1007/s10103-020-02948-w
ISSN: 0268-8921
Appears in Collections:Cerrahi Tıp Bilimleri Bölümü / Department of Surgical Sciences
PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

Show full item record

CORE Recommender

SCOPUSTM   
Citations

3
checked on Sep 23, 2022

WEB OF SCIENCETM
Citations

4
checked on Feb 4, 2023

Page view(s)

14
checked on Dec 26, 2022

Google ScholarTM

Check

Altmetric


Items in GCRIS Repository are protected by copyright, with all rights reserved, unless otherwise indicated.