Improving near vision in presbyopic eyes by selective treatment of high-order aberrations

Mounir A Khalifa1,2, Waleed A Allam1,2, Ahmed M Khalifa21Tanta University Eye Hospital, Tanta, Egypt; 2Horus Vision Correction Center, Alexandria, EgyptPurpose: Evaluation of improving near vision in presbyopic patients with low to moderate myopia with selective treatment of high-order aberrations (...

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Autores principales:	Khalifa MA, Allam WA, Khalifa AM
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2011
Materias:	Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/84635e713ee94c7d9dd2808d4d496e55
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spelling	oai:doaj.org-article:84635e713ee94c7d9dd2808d4d496e552021-12-02T04:19:55ZImproving near vision in presbyopic eyes by selective treatment of high-order aberrations1177-54671177-5483https://doaj.org/article/84635e713ee94c7d9dd2808d4d496e552011-10-01T00:00:00Zhttp://www.dovepress.com/improving-near-vision-in-presbyopic-eyes-by-selective-treatment-of-hig-a8486https://doaj.org/toc/1177-5467https://doaj.org/toc/1177-5483Mounir A Khalifa1,2, Waleed A Allam1,2, Ahmed M Khalifa21Tanta University Eye Hospital, Tanta, Egypt; 2Horus Vision Correction Center, Alexandria, EgyptPurpose: Evaluation of improving near vision in presbyopic patients with low to moderate myopia with selective treatment of high-order aberrations (HOAs) using the ORK-CAM software aberrometer and a SCHWIND ESIRIS excimer laser. In this study, all HOAs except vertical coma were treated and the effect on near visual function was evaluated.Setting: Horus Vision Correction Center, Alexandria, Egypt.Methods: Twenty-six presbyopic patients (52 eyes) with low to moderate myopia were divided into two groups, A and B. The ORK-CAM software aberrometer was used in both groups to measure HOAs and design wavefront-guided treatment. All included eyes had total coma &gt;0.2 &micro;m. The Moria M2 mechanical microkeratome was used for flap making in both groups. Wavefront-guided laser-assisted in situ keratomileusis using ESIRIS laser was done for all eyes. In Group A (30 eyes) all HOAs were treated. In Group B (22 eyes) vertical coma was left untreated. Postoperative uncorrected distance visual acuity (UCVA), best corrected distance visual acuity (BCVA), uncorrected near acuity (UCNA), distance corrected near acuity (DCNA), best corrected near acuity with addition for near vision (BCNA), manifest refractive spherical equivalent (MRSE), HOAs, and contrast sensitivity for both groups were done preoperatively and at 3 months postoperatively.Results: Mean age was 47.46 and 45.2 years for groups A and B, respectively. Mean preoperative MRSE was -2.37 and -2.87 D and mean preoperative total HOAs was 0.35 and 0.38 &micro;m in groups A and B, respectively. There was no significant difference between groups regarding age, sex, preoperative MRSE, and preoperative total HOAs. After 3 months, there was no significant difference between groups in terms of UCVA, BCVA, MRSE, and contrast sensitivity. Analysis of postoperative HOAs showed significant difference in vertical coma between the two groups (P &lt; 0.001). DCNA was significantly better in Group B (P &lt; 0.01).Conclusion: Treating low to moderate myopia with wavefront-guided ablation including selective treatment of HOAs might be very useful for improving visual functions. Treating all HOAs but the vertical coma improved uncorrected near acuity in presbyopic patients.Keywords: presbyopia, vertical coma, wavefrontKhalifa MAAllam WAKhalifa AMDove Medical PressarticleOphthalmologyRE1-994ENClinical Ophthalmology, Vol 2011, Iss default, Pp 1525-1530 (2011)
institution	DOAJ
collection	DOAJ
language	EN
topic	Ophthalmology RE1-994
spellingShingle	Ophthalmology RE1-994 Khalifa MA Allam WA Khalifa AM Improving near vision in presbyopic eyes by selective treatment of high-order aberrations
description	Mounir A Khalifa1,2, Waleed A Allam1,2, Ahmed M Khalifa21Tanta University Eye Hospital, Tanta, Egypt; 2Horus Vision Correction Center, Alexandria, EgyptPurpose: Evaluation of improving near vision in presbyopic patients with low to moderate myopia with selective treatment of high-order aberrations (HOAs) using the ORK-CAM software aberrometer and a SCHWIND ESIRIS excimer laser. In this study, all HOAs except vertical coma were treated and the effect on near visual function was evaluated.Setting: Horus Vision Correction Center, Alexandria, Egypt.Methods: Twenty-six presbyopic patients (52 eyes) with low to moderate myopia were divided into two groups, A and B. The ORK-CAM software aberrometer was used in both groups to measure HOAs and design wavefront-guided treatment. All included eyes had total coma &gt;0.2 &micro;m. The Moria M2 mechanical microkeratome was used for flap making in both groups. Wavefront-guided laser-assisted in situ keratomileusis using ESIRIS laser was done for all eyes. In Group A (30 eyes) all HOAs were treated. In Group B (22 eyes) vertical coma was left untreated. Postoperative uncorrected distance visual acuity (UCVA), best corrected distance visual acuity (BCVA), uncorrected near acuity (UCNA), distance corrected near acuity (DCNA), best corrected near acuity with addition for near vision (BCNA), manifest refractive spherical equivalent (MRSE), HOAs, and contrast sensitivity for both groups were done preoperatively and at 3 months postoperatively.Results: Mean age was 47.46 and 45.2 years for groups A and B, respectively. Mean preoperative MRSE was -2.37 and -2.87 D and mean preoperative total HOAs was 0.35 and 0.38 &micro;m in groups A and B, respectively. There was no significant difference between groups regarding age, sex, preoperative MRSE, and preoperative total HOAs. After 3 months, there was no significant difference between groups in terms of UCVA, BCVA, MRSE, and contrast sensitivity. Analysis of postoperative HOAs showed significant difference in vertical coma between the two groups (P &lt; 0.001). DCNA was significantly better in Group B (P &lt; 0.01).Conclusion: Treating low to moderate myopia with wavefront-guided ablation including selective treatment of HOAs might be very useful for improving visual functions. Treating all HOAs but the vertical coma improved uncorrected near acuity in presbyopic patients.Keywords: presbyopia, vertical coma, wavefront
format	article
author	Khalifa MA Allam WA Khalifa AM
author_facet	Khalifa MA Allam WA Khalifa AM
author_sort	Khalifa MA
title	Improving near vision in presbyopic eyes by selective treatment of high-order aberrations
title_short	Improving near vision in presbyopic eyes by selective treatment of high-order aberrations
title_full	Improving near vision in presbyopic eyes by selective treatment of high-order aberrations
title_fullStr	Improving near vision in presbyopic eyes by selective treatment of high-order aberrations
title_full_unstemmed	Improving near vision in presbyopic eyes by selective treatment of high-order aberrations
title_sort	improving near vision in presbyopic eyes by selective treatment of high-order aberrations
publisher	Dove Medical Press
publishDate	2011
url	https://doaj.org/article/84635e713ee94c7d9dd2808d4d496e55
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_version_	1718401320435580928

Improving near vision in presbyopic eyes by selective treatment of high-order aberrations

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