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Use of angle kappa in myopic photorefractive keratectomy
PURPOSE: To explore utilization of the coaxially sighted corneal light reflex (CSCLR) for centration during myopic photorefractive keratectomy (PRK) for patients with relatively high angle kappa (κ) values. METHODS: Patients were stratified into two groups preoperatively, on the basis of angle κ val...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Dove Medical Press
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4322872/ https://www.ncbi.nlm.nih.gov/pubmed/25678767 http://dx.doi.org/10.2147/OPTH.S70690 |
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author | Khakshoor, Hamid McCaughey, Michael V Vejdani, Amir Hossein Daneshvar, Ramin Moshirfar, Majid |
author_facet | Khakshoor, Hamid McCaughey, Michael V Vejdani, Amir Hossein Daneshvar, Ramin Moshirfar, Majid |
author_sort | Khakshoor, Hamid |
collection | PubMed |
description | PURPOSE: To explore utilization of the coaxially sighted corneal light reflex (CSCLR) for centration during myopic photorefractive keratectomy (PRK) for patients with relatively high angle kappa (κ) values. METHODS: Patients were stratified into two groups preoperatively, on the basis of angle κ values. Group A was composed of 166 eyes with an angle κ value <5°. Group B consisted of 182 eyes with an angle κ value >5°. Intraoperative centering of ablation was performed within group A by utilizing the pupillary center, and within group B by using the CSCLR. Visual acuities were evaluated and compared at 6 months and 12 months postoperatively between groups. RESULTS: Mean uncorrected visual acuities (UCVA) for all patients at 6 months and 12 months were −0.073 logMAR and −0.080 logMAR, respectively. A total of 98.9% of patients had a UCVA of 0.00 logMAR (≈20/20 Snellen) 12 months postoperatively. There was not a significant between-group difference in regard to residual refractive error at 6 months or 12 months (P=0.53 and P=0.97), or in UCVA at 6 months and 12 months (P=0.76 and P=0.17). There were no subjective complaints of monocular diplopia, glare, or haloes within either group at any time during follow-up. CONCLUSION: Availing use of the CSCLR for centration of ablation within myopic patients with high angle κ values may aid in providing better refractive outcomes after performance of PRK. |
format | Online Article Text |
id | pubmed-4322872 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Dove Medical Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-43228722015-02-12 Use of angle kappa in myopic photorefractive keratectomy Khakshoor, Hamid McCaughey, Michael V Vejdani, Amir Hossein Daneshvar, Ramin Moshirfar, Majid Clin Ophthalmol Rapid Communication PURPOSE: To explore utilization of the coaxially sighted corneal light reflex (CSCLR) for centration during myopic photorefractive keratectomy (PRK) for patients with relatively high angle kappa (κ) values. METHODS: Patients were stratified into two groups preoperatively, on the basis of angle κ values. Group A was composed of 166 eyes with an angle κ value <5°. Group B consisted of 182 eyes with an angle κ value >5°. Intraoperative centering of ablation was performed within group A by utilizing the pupillary center, and within group B by using the CSCLR. Visual acuities were evaluated and compared at 6 months and 12 months postoperatively between groups. RESULTS: Mean uncorrected visual acuities (UCVA) for all patients at 6 months and 12 months were −0.073 logMAR and −0.080 logMAR, respectively. A total of 98.9% of patients had a UCVA of 0.00 logMAR (≈20/20 Snellen) 12 months postoperatively. There was not a significant between-group difference in regard to residual refractive error at 6 months or 12 months (P=0.53 and P=0.97), or in UCVA at 6 months and 12 months (P=0.76 and P=0.17). There were no subjective complaints of monocular diplopia, glare, or haloes within either group at any time during follow-up. CONCLUSION: Availing use of the CSCLR for centration of ablation within myopic patients with high angle κ values may aid in providing better refractive outcomes after performance of PRK. Dove Medical Press 2015-01-29 /pmc/articles/PMC4322872/ /pubmed/25678767 http://dx.doi.org/10.2147/OPTH.S70690 Text en © 2015 Khakshoor et al. This work is published by Dove Medical Press Limited, and licensed under Creative Commons Attribution – Non Commercial (unported, v3.0) License The full terms of the License are available at http://creativecommons.org/licenses/by-nc/3.0/. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. |
spellingShingle | Rapid Communication Khakshoor, Hamid McCaughey, Michael V Vejdani, Amir Hossein Daneshvar, Ramin Moshirfar, Majid Use of angle kappa in myopic photorefractive keratectomy |
title | Use of angle kappa in myopic photorefractive keratectomy |
title_full | Use of angle kappa in myopic photorefractive keratectomy |
title_fullStr | Use of angle kappa in myopic photorefractive keratectomy |
title_full_unstemmed | Use of angle kappa in myopic photorefractive keratectomy |
title_short | Use of angle kappa in myopic photorefractive keratectomy |
title_sort | use of angle kappa in myopic photorefractive keratectomy |
topic | Rapid Communication |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4322872/ https://www.ncbi.nlm.nih.gov/pubmed/25678767 http://dx.doi.org/10.2147/OPTH.S70690 |
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