Cargando…

Decentration following femtosecond laser small incision lenticule extraction (SMILE) in eyes with high astigmatism and its impact on visual quality

BACKGROUND: To measure the decentration following SMILE in eyes with high myopic astigmatism and investigate its impact on visual quality. METHODS: The prospective study was conducted to analyze patients who underwent SMILE for correction of myopia and myopic astigmatism ≥2.5D (high astigmatism grou...

Descripción completa

Detalles Bibliográficos
Autores principales: Huang, Jia, Zhou, Xingtao, Qian, Yishan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6637638/
https://www.ncbi.nlm.nih.gov/pubmed/31315595
http://dx.doi.org/10.1186/s12886-019-1153-7
_version_ 1783436284450045952
author Huang, Jia
Zhou, Xingtao
Qian, Yishan
author_facet Huang, Jia
Zhou, Xingtao
Qian, Yishan
author_sort Huang, Jia
collection PubMed
description BACKGROUND: To measure the decentration following SMILE in eyes with high myopic astigmatism and investigate its impact on visual quality. METHODS: The prospective study was conducted to analyze patients who underwent SMILE for correction of myopia and myopic astigmatism ≥2.5D (high astigmatism group, HA) at the ophthalmology department, Eye and ENT hospital, Shanghai, China.. Patients with myopic astigmatism < 1.5D served as controls (low astigmatism group, LA). Decentration was measured using a Scheimpflug camera with a difference map of the tangential curvature at 12 months postoperatively. Also the associations between decentration from the coaxial sighted corneal light reflex (CSCLR) and the visual outcomes, correction efficacy of astigmatism, wavefront aberrations and objective scatter index (OSI) were analyzed. RESULTS: No significant differences were observed in the decentered distance between HA and LA in either eyes (OD: HA: 0.18 ± 0.10 mm, LA: 0.20 ± 0.14 mm, P = 0.659; OS: HA: 0.22 ± 0.11 mm, LA: 0.20 ± 0.11 mm, P = 0.637). The analysis across the three levels of decentration (< 0.1 mm, 0.1–0.2 mm, and > 0.2 mm) showed no significant association between decentration and visual outcomes of predictability, efficiency, safety, MTF cutoff, OSI, SR and OVs in both groups. Also no significant association was observed between decentration and postoperative astigmatism in either group. A significant relationship between the magnitude of decentration and induced coma and spherical aberration was observed in HA. CONCLUSIONS: The amount of decentration between HA and LA groups showed no differences. Decentration > 0.20 mm from CSCLR resulted in greater induction of coma and SA after SMILE in eyes with HA.
format Online
Article
Text
id pubmed-6637638
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher BioMed Central
record_format MEDLINE/PubMed
spelling pubmed-66376382019-07-29 Decentration following femtosecond laser small incision lenticule extraction (SMILE) in eyes with high astigmatism and its impact on visual quality Huang, Jia Zhou, Xingtao Qian, Yishan BMC Ophthalmol Research Article BACKGROUND: To measure the decentration following SMILE in eyes with high myopic astigmatism and investigate its impact on visual quality. METHODS: The prospective study was conducted to analyze patients who underwent SMILE for correction of myopia and myopic astigmatism ≥2.5D (high astigmatism group, HA) at the ophthalmology department, Eye and ENT hospital, Shanghai, China.. Patients with myopic astigmatism < 1.5D served as controls (low astigmatism group, LA). Decentration was measured using a Scheimpflug camera with a difference map of the tangential curvature at 12 months postoperatively. Also the associations between decentration from the coaxial sighted corneal light reflex (CSCLR) and the visual outcomes, correction efficacy of astigmatism, wavefront aberrations and objective scatter index (OSI) were analyzed. RESULTS: No significant differences were observed in the decentered distance between HA and LA in either eyes (OD: HA: 0.18 ± 0.10 mm, LA: 0.20 ± 0.14 mm, P = 0.659; OS: HA: 0.22 ± 0.11 mm, LA: 0.20 ± 0.11 mm, P = 0.637). The analysis across the three levels of decentration (< 0.1 mm, 0.1–0.2 mm, and > 0.2 mm) showed no significant association between decentration and visual outcomes of predictability, efficiency, safety, MTF cutoff, OSI, SR and OVs in both groups. Also no significant association was observed between decentration and postoperative astigmatism in either group. A significant relationship between the magnitude of decentration and induced coma and spherical aberration was observed in HA. CONCLUSIONS: The amount of decentration between HA and LA groups showed no differences. Decentration > 0.20 mm from CSCLR resulted in greater induction of coma and SA after SMILE in eyes with HA. BioMed Central 2019-07-17 /pmc/articles/PMC6637638/ /pubmed/31315595 http://dx.doi.org/10.1186/s12886-019-1153-7 Text en © The Author(s). 2019 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
spellingShingle Research Article
Huang, Jia
Zhou, Xingtao
Qian, Yishan
Decentration following femtosecond laser small incision lenticule extraction (SMILE) in eyes with high astigmatism and its impact on visual quality
title Decentration following femtosecond laser small incision lenticule extraction (SMILE) in eyes with high astigmatism and its impact on visual quality
title_full Decentration following femtosecond laser small incision lenticule extraction (SMILE) in eyes with high astigmatism and its impact on visual quality
title_fullStr Decentration following femtosecond laser small incision lenticule extraction (SMILE) in eyes with high astigmatism and its impact on visual quality
title_full_unstemmed Decentration following femtosecond laser small incision lenticule extraction (SMILE) in eyes with high astigmatism and its impact on visual quality
title_short Decentration following femtosecond laser small incision lenticule extraction (SMILE) in eyes with high astigmatism and its impact on visual quality
title_sort decentration following femtosecond laser small incision lenticule extraction (smile) in eyes with high astigmatism and its impact on visual quality
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6637638/
https://www.ncbi.nlm.nih.gov/pubmed/31315595
http://dx.doi.org/10.1186/s12886-019-1153-7
work_keys_str_mv AT huangjia decentrationfollowingfemtosecondlasersmallincisionlenticuleextractionsmileineyeswithhighastigmatismanditsimpactonvisualquality
AT zhouxingtao decentrationfollowingfemtosecondlasersmallincisionlenticuleextractionsmileineyeswithhighastigmatismanditsimpactonvisualquality
AT qianyishan decentrationfollowingfemtosecondlasersmallincisionlenticuleextractionsmileineyeswithhighastigmatismanditsimpactonvisualquality