$Long-term changes in keratometry and refraction after small aperture corneal inlay implantation$
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Long-term changes in keratometry and refraction after small aperture corneal inlay implantation

Majid Moshirfar,1,2 Jordan D Desautels,1,3 Brian D Walker,4 Orry C Birdsong,1 David F Skanchy,4 Tyler S Quist,5 Michael S Murri,6 Steve H Linn,1 Phillip C Hoopes Jr,1,2 Phillip C Hoopes1,2 1Hoopes, Durrie, Rivera Research Center, Hoopes Vision, Draper, UT, USA; 2John A. Moran Eye Center, Department...

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Autores principales:	Moshirfar M, Desautels JD, Walker BD, Birdsong OC, Skanchy DF, Quist TS, Murri MS, Linn SH, Hoopes Jr PC, Hoopes PC
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2018
Materias:	Presbyopia KAMRA small-aperture corneal inlay keratometry Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/ceda843c1fb843788dc6b6941518ea76
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spelling	oai:doaj.org-article:ceda843c1fb843788dc6b6941518ea762021-12-02T07:34:41ZLong-term changes in keratometry and refraction after small aperture corneal inlay implantation1177-5483https://doaj.org/article/ceda843c1fb843788dc6b6941518ea762018-10-01T00:00:00Zhttps://www.dovepress.com/long-term-changes-in-keratometry-and-refraction-after-small-aperture-c-peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483Majid Moshirfar,1,2 Jordan D Desautels,1,3 Brian D Walker,4 Orry C Birdsong,1 David F Skanchy,4 Tyler S Quist,5 Michael S Murri,6 Steve H Linn,1 Phillip C Hoopes Jr,1,2 Phillip C Hoopes1,2 1Hoopes, Durrie, Rivera Research Center, Hoopes Vision, Draper, UT, USA; 2John A. Moran Eye Center, Department of Ophthalmology and Visual Sciences, School of Medicine, University of Utah, Salt Lake City, UT, USA; 3The Warren Alpert Medical School, Brown University, Providence, RI, USA; 4McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, USA; 5Department of Ophthalmology and Visual Sciences, Carver College of Medicine, University of Iowa, Iowa City, IA, USA; 6Baylor College of Medicine, Houston, TX, USA Purpose: To assess longitudinal refractive, keratometric, and topographic changes following KAMRA small-aperture inlay implantation.Design and setting: Prospective study at a single site refractive surgery center.Methods: Fifty patients underwent KAMRA small-aperture corneal inlay implantation for the correction of presbyopia. Uncorrected near visual acuity (UNVA), uncorrected distance visual acuity, manifest refractive spherical equivalent (MRSE), mean keratometry (Km), corneal topography, and surgically induced astigmatism vector analysis assessments were performed preoperatively and at 1, 3, 6, 12, 24, and 36 months postoperatively.Results: The study comprises 50 eyes. An average shift of 0.15±0.63 D (range -1.63 to 2.00 D) occurred between preoperative baseline and 36 months. At 36 months, 54% of patients had hyperopic MRSE and 40% had myopic MRSE compared with baseline. Km was significantly elevated at all postoperative measurements compared with baseline, with the largest Km measured at 12 months. Eighty-six percent of patients had UNVA of 20/32 or better and 88% uncorrected distance visual acuity of 20/25 or better at 36 months. Longitudinal corneal topography revealed a pattern of corneal steepening over the body of the inlay and flattening over the aperture, correlating with a hyperopic shift. There was no significant surgically induced astigmatism.Conclusion: KAMRA inlay may cause an increase in Km compared with baseline. Corneal steepening may occur in a specific pattern with steepening over the inlay and flattening over the aperture. This topographic pattern causes a hyperopic shift, which may be relevant for subsequent procedures, such as cataract extraction. Keywords: presbyopia, KAMRA, wound healing, IOL calculationMoshirfar MDesautels JDWalker BDBirdsong OCSkanchy DFQuist TSMurri MSLinn SHHoopes Jr PCHoopes PCDove Medical PressarticlePresbyopiaKAMRAsmall-aperture corneal inlaykeratometryOphthalmologyRE1-994ENClinical Ophthalmology, Vol Volume 12, Pp 1931-1938 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Presbyopia KAMRA small-aperture corneal inlay keratometry Ophthalmology RE1-994
spellingShingle	Presbyopia KAMRA small-aperture corneal inlay keratometry Ophthalmology RE1-994 Moshirfar M Desautels JD Walker BD Birdsong OC Skanchy DF Quist TS Murri MS Linn SH Hoopes Jr PC Hoopes PC Long-term changes in keratometry and refraction after small aperture corneal inlay implantation
description	Majid Moshirfar,1,2 Jordan D Desautels,1,3 Brian D Walker,4 Orry C Birdsong,1 David F Skanchy,4 Tyler S Quist,5 Michael S Murri,6 Steve H Linn,1 Phillip C Hoopes Jr,1,2 Phillip C Hoopes1,2 1Hoopes, Durrie, Rivera Research Center, Hoopes Vision, Draper, UT, USA; 2John A. Moran Eye Center, Department of Ophthalmology and Visual Sciences, School of Medicine, University of Utah, Salt Lake City, UT, USA; 3The Warren Alpert Medical School, Brown University, Providence, RI, USA; 4McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, USA; 5Department of Ophthalmology and Visual Sciences, Carver College of Medicine, University of Iowa, Iowa City, IA, USA; 6Baylor College of Medicine, Houston, TX, USA Purpose: To assess longitudinal refractive, keratometric, and topographic changes following KAMRA small-aperture inlay implantation.Design and setting: Prospective study at a single site refractive surgery center.Methods: Fifty patients underwent KAMRA small-aperture corneal inlay implantation for the correction of presbyopia. Uncorrected near visual acuity (UNVA), uncorrected distance visual acuity, manifest refractive spherical equivalent (MRSE), mean keratometry (Km), corneal topography, and surgically induced astigmatism vector analysis assessments were performed preoperatively and at 1, 3, 6, 12, 24, and 36 months postoperatively.Results: The study comprises 50 eyes. An average shift of 0.15±0.63 D (range -1.63 to 2.00 D) occurred between preoperative baseline and 36 months. At 36 months, 54% of patients had hyperopic MRSE and 40% had myopic MRSE compared with baseline. Km was significantly elevated at all postoperative measurements compared with baseline, with the largest Km measured at 12 months. Eighty-six percent of patients had UNVA of 20/32 or better and 88% uncorrected distance visual acuity of 20/25 or better at 36 months. Longitudinal corneal topography revealed a pattern of corneal steepening over the body of the inlay and flattening over the aperture, correlating with a hyperopic shift. There was no significant surgically induced astigmatism.Conclusion: KAMRA inlay may cause an increase in Km compared with baseline. Corneal steepening may occur in a specific pattern with steepening over the inlay and flattening over the aperture. This topographic pattern causes a hyperopic shift, which may be relevant for subsequent procedures, such as cataract extraction. Keywords: presbyopia, KAMRA, wound healing, IOL calculation
format	article
author	Moshirfar M Desautels JD Walker BD Birdsong OC Skanchy DF Quist TS Murri MS Linn SH Hoopes Jr PC Hoopes PC
author_facet	Moshirfar M Desautels JD Walker BD Birdsong OC Skanchy DF Quist TS Murri MS Linn SH Hoopes Jr PC Hoopes PC
author_sort	Moshirfar M
title	Long-term changes in keratometry and refraction after small aperture corneal inlay implantation
title_short	Long-term changes in keratometry and refraction after small aperture corneal inlay implantation
title_full	Long-term changes in keratometry and refraction after small aperture corneal inlay implantation
title_fullStr	Long-term changes in keratometry and refraction after small aperture corneal inlay implantation
title_full_unstemmed	Long-term changes in keratometry and refraction after small aperture corneal inlay implantation
title_sort	long-term changes in keratometry and refraction after small aperture corneal inlay implantation
publisher	Dove Medical Press
publishDate	2018
url	https://doaj.org/article/ceda843c1fb843788dc6b6941518ea76
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Long-term changes in keratometry and refraction after small aperture corneal inlay implantation

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