Use of angle kappa in myopic photorefractive keratectomy

Use of angle kappa in myopic photorefractive keratectomy

Hamid Khakshoor,1 Michael V McCaughey,2 Amir Hossein Vejdani,1 Ramin Daneshvar,1 Majid Moshirfar3 1Department of Ophthalmology, The University of Mashhad, Mashhad, Iran; 2Department of Ophthalmology, The University of New Mexico, School of Medicine, Albuquerque, NM, USA; 3Department of Op...

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Autores principales: Khakshoor H, McCaughey MV, Vejdani AH, Daneshvar R, Moshirfar M
Formato: article
Lenguaje:EN
Publicado: Dove Medical Press 2015
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Ophthalmology
RE1-994
Acceso en línea:https://doaj.org/article/cdb8a7fe5e8345d68367104758e9f17c
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spelling oai:doaj.org-article:cdb8a7fe5e8345d68367104758e9f17c2021-12-02T05:53:51ZUse of angle kappa in myopic photorefractive keratectomy1177-5483https://doaj.org/article/cdb8a7fe5e8345d68367104758e9f17c2015-01-01T00:00:00Zhttp://www.dovepress.com/use-of-angle-kappa-in-myopic-photorefractive-keratectomy-peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483 Hamid Khakshoor,1 Michael V McCaughey,2 Amir Hossein Vejdani,1 Ramin Daneshvar,1 Majid Moshirfar3 1Department of Ophthalmology, The University of Mashhad, Mashhad, Iran; 2Department of Ophthalmology, The University of New Mexico, School of Medicine, Albuquerque, NM, USA; 3Department of Ophthalmology, Francis I Proctor Foundation, University of California San Francisco, CA, USA 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. Keywords: angle kappa, photorefractive keratectomy, PRK, CSCLR, myopia, Purkinje reflexKhakshoor HMcCaughey MVVejdani AHDaneshvar RMoshirfar MDove Medical PressarticleOphthalmologyRE1-994ENClinical Ophthalmology, Vol 2015, Iss default, Pp 193-195 (2015)
institution DOAJ
collection DOAJ
language EN
topic Ophthalmology
RE1-994
spellingShingle Ophthalmology
RE1-994
Khakshoor H
McCaughey MV
Vejdani AH
Daneshvar R
Moshirfar M
Use of angle kappa in myopic photorefractive keratectomy
description Hamid Khakshoor,1 Michael V McCaughey,2 Amir Hossein Vejdani,1 Ramin Daneshvar,1 Majid Moshirfar3 1Department of Ophthalmology, The University of Mashhad, Mashhad, Iran; 2Department of Ophthalmology, The University of New Mexico, School of Medicine, Albuquerque, NM, USA; 3Department of Ophthalmology, Francis I Proctor Foundation, University of California San Francisco, CA, USA 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. Keywords: angle kappa, photorefractive keratectomy, PRK, CSCLR, myopia, Purkinje reflex
format article
author Khakshoor H
McCaughey MV
Vejdani AH
Daneshvar R
Moshirfar M
author_facet Khakshoor H
McCaughey MV
Vejdani AH
Daneshvar R
Moshirfar M
author_sort Khakshoor H
title Use of angle kappa in myopic photorefractive keratectomy
title_short 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_sort use of angle kappa in myopic photorefractive keratectomy
publisher Dove Medical Press
publishDate 2015
url https://doaj.org/article/cdb8a7fe5e8345d68367104758e9f17c
work_keys_str_mv AT khakshoorh useofanglekappainmyopicphotorefractivekeratectomy
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AT vejdaniah useofanglekappainmyopicphotorefractivekeratectomy
AT daneshvarr useofanglekappainmyopicphotorefractivekeratectomy
AT moshirfarm useofanglekappainmyopicphotorefractivekeratectomy
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