High-resolution wavefront-guided surface ablation with corneal cross-linking in ectatic corneas: a pilot study

Gustavo E Tamayo, Claudia Castell, Pilar Vargas, Eduardo Polania, Juliana Tamayo Bogota Laser Ocular Surgery Center, Bogota, Colombia Purpose: A preliminary study to evaluate the outcomes of high-resolution wavefront-guided (HRWG) photorefractive keratectomy (PRK) with simultaneous corneal cross-l...

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Autores principales:	Tamayo GE, Castell C, Vargas P, Polania E, Tamayo J
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2017
Materias:	High resolution wavefront-guided ablation wavefront-guided PRK with CXL keratoconus treatment ectasia high resolution wavefront aberrometry Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/f6001dcfdb2b47ed924d522b0ff710fb
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spelling	oai:doaj.org-article:f6001dcfdb2b47ed924d522b0ff710fb2021-12-02T05:06:05ZHigh-resolution wavefront-guided surface ablation with corneal cross-linking in ectatic corneas: a pilot study1177-5483https://doaj.org/article/f6001dcfdb2b47ed924d522b0ff710fb2017-10-01T00:00:00Zhttps://www.dovepress.com/high-resolution-wavefront-guided-surface-ablation-with-corneal-cross-l-peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483Gustavo E Tamayo, Claudia Castell, Pilar Vargas, Eduardo Polania, Juliana Tamayo Bogota Laser Ocular Surgery Center, Bogota, Colombia Purpose: A preliminary study to evaluate the outcomes of high-resolution wavefront-guided (HRWG) photorefractive keratectomy (PRK) with simultaneous corneal cross-linking (CXL) in ectasia eyes.Methods: Sixteen eyes of 11 patients (mean age 31.9±9.8 years; range: 15–48 years) with keratoconus or post-laser-assisted in situ keratomileusis ectasia underwent HRWG PRK with simultaneous CXL. Manifest refraction, uncorrected (UDVA) and corrected distance visual acuity (CDVA), and keratometric and aberrometric outcomes are reported at 12 months.Results: Significant improvement was observed postoperatively in visual acuity, refraction, and keratectomy in all eyes. At postoperative 12 months, 87.5% eyes were within ±1.0 D of attempted correction and 81.25% of eyes had a postoperative UDVA of 20/32 or better. A gain of 2 or more lines of CDVA was observed in 12.5% (2/16) of eyes and there was no change in CDVA lines in 25% (4/16) eyes. A substantial reduction in higher-order aberrations was observed in all eyes postoperatively; however, the improvement was not statistically significant.Conclusion: The outcomes of HRWG PRK in ectasia eyes with estimated residual stromal bed thickness of at least 350 µm (without epithelium) are promising at postoperative 1 year and provide surgeons with a valuable tool to improve vision with a high degree of refractive predictability. Keywords: wavefront ablation, corneal cross linking, irregular astigmatism, keratoconus, ectasiaTamayo GECastell CVargas PPolania ETamayo JDove Medical PressarticleHigh resolution wavefront-guided ablationwavefront-guided PRK with CXLkeratoconus treatmentectasiahigh resolution wavefront aberrometryOphthalmologyRE1-994ENClinical Ophthalmology, Vol Volume 11, Pp 1777-1783 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	High resolution wavefront-guided ablation wavefront-guided PRK with CXL keratoconus treatment ectasia high resolution wavefront aberrometry Ophthalmology RE1-994
spellingShingle	High resolution wavefront-guided ablation wavefront-guided PRK with CXL keratoconus treatment ectasia high resolution wavefront aberrometry Ophthalmology RE1-994 Tamayo GE Castell C Vargas P Polania E Tamayo J High-resolution wavefront-guided surface ablation with corneal cross-linking in ectatic corneas: a pilot study
description	Gustavo E Tamayo, Claudia Castell, Pilar Vargas, Eduardo Polania, Juliana Tamayo Bogota Laser Ocular Surgery Center, Bogota, Colombia Purpose: A preliminary study to evaluate the outcomes of high-resolution wavefront-guided (HRWG) photorefractive keratectomy (PRK) with simultaneous corneal cross-linking (CXL) in ectasia eyes.Methods: Sixteen eyes of 11 patients (mean age 31.9±9.8 years; range: 15–48 years) with keratoconus or post-laser-assisted in situ keratomileusis ectasia underwent HRWG PRK with simultaneous CXL. Manifest refraction, uncorrected (UDVA) and corrected distance visual acuity (CDVA), and keratometric and aberrometric outcomes are reported at 12 months.Results: Significant improvement was observed postoperatively in visual acuity, refraction, and keratectomy in all eyes. At postoperative 12 months, 87.5% eyes were within ±1.0 D of attempted correction and 81.25% of eyes had a postoperative UDVA of 20/32 or better. A gain of 2 or more lines of CDVA was observed in 12.5% (2/16) of eyes and there was no change in CDVA lines in 25% (4/16) eyes. A substantial reduction in higher-order aberrations was observed in all eyes postoperatively; however, the improvement was not statistically significant.Conclusion: The outcomes of HRWG PRK in ectasia eyes with estimated residual stromal bed thickness of at least 350 µm (without epithelium) are promising at postoperative 1 year and provide surgeons with a valuable tool to improve vision with a high degree of refractive predictability. Keywords: wavefront ablation, corneal cross linking, irregular astigmatism, keratoconus, ectasia
format	article
author	Tamayo GE Castell C Vargas P Polania E Tamayo J
author_facet	Tamayo GE Castell C Vargas P Polania E Tamayo J
author_sort	Tamayo GE
title	High-resolution wavefront-guided surface ablation with corneal cross-linking in ectatic corneas: a pilot study
title_short	High-resolution wavefront-guided surface ablation with corneal cross-linking in ectatic corneas: a pilot study
title_full	High-resolution wavefront-guided surface ablation with corneal cross-linking in ectatic corneas: a pilot study
title_fullStr	High-resolution wavefront-guided surface ablation with corneal cross-linking in ectatic corneas: a pilot study
title_full_unstemmed	High-resolution wavefront-guided surface ablation with corneal cross-linking in ectatic corneas: a pilot study
title_sort	high-resolution wavefront-guided surface ablation with corneal cross-linking in ectatic corneas: a pilot study
publisher	Dove Medical Press
publishDate	2017
url	https://doaj.org/article/f6001dcfdb2b47ed924d522b0ff710fb
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_version_	1718400628411072512

High-resolution wavefront-guided surface ablation with corneal cross-linking in ectatic corneas: a pilot study

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