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Lens Densitometry after Corneal Cross-linking in Patients with Keratoconus Using a Scheimpflug Camera
PURPOSE: To evaluate changes in crystalline lens densitometry following corneal cross-linking (CXL) in keratoconic patients. METHODS: In a quasi-experimental study, three-dimensional lens densitometry was performed using the Pentacam Scheimpflug camera (Oculus Optikgerate GmbH, Wetzlar, Germany) at...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Medknow Publications & Media Pvt Ltd
2015
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4568607/ https://www.ncbi.nlm.nih.gov/pubmed/26425312 http://dx.doi.org/10.4103/2008-322X.163776 |
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author | Baradaran-Rafii, Alireza Amiri, Mohammad Aghazazeh Mohaghegh, Sahar Zarei-Ghanavati, Mehran |
author_facet | Baradaran-Rafii, Alireza Amiri, Mohammad Aghazazeh Mohaghegh, Sahar Zarei-Ghanavati, Mehran |
author_sort | Baradaran-Rafii, Alireza |
collection | PubMed |
description | PURPOSE: To evaluate changes in crystalline lens densitometry following corneal cross-linking (CXL) in keratoconic patients. METHODS: In a quasi-experimental study, three-dimensional lens densitometry was performed using the Pentacam Scheimpflug camera (Oculus Optikgerate GmbH, Wetzlar, Germany) at baseline and six months after CXL. Densitometry was performed in a fixed area of 2 inch × 1 inch of the anterior capsule and anterior lens cortex. The subject group included patients with progressive keratoconus who underwent CXL (n = 40) and the control group was comprised of aged-matched patients with non-progressive keratoconus (n = 36). RESULTS: Mean age of the case and control groups was 25.8 ± 4.0 and 25.0 ± 4.1 years, respectively (P = 0.392). Mean lens density in the CXL group was 6.68% ± 0.58% at baseline and 6.77% ± 0.53% at the last visit (P = 0.352). Corresponding figures in the control group were 6.53% ± 0.27% and 6.39% ± 0.31%, respectively (P = 0.213). There was no significant difference between the study groups at baseline or six months later (P = 0.96). CONCLUSION: In this short term study with six months’ follow-up, we observed no significant impact on lens density following exposure of the crystalline lens to ultraviolet A and riboflavin free radicals in the CXL procedure. |
format | Online Article Text |
id | pubmed-4568607 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Medknow Publications & Media Pvt Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-45686072015-09-30 Lens Densitometry after Corneal Cross-linking in Patients with Keratoconus Using a Scheimpflug Camera Baradaran-Rafii, Alireza Amiri, Mohammad Aghazazeh Mohaghegh, Sahar Zarei-Ghanavati, Mehran J Ophthalmic Vis Res Original Article PURPOSE: To evaluate changes in crystalline lens densitometry following corneal cross-linking (CXL) in keratoconic patients. METHODS: In a quasi-experimental study, three-dimensional lens densitometry was performed using the Pentacam Scheimpflug camera (Oculus Optikgerate GmbH, Wetzlar, Germany) at baseline and six months after CXL. Densitometry was performed in a fixed area of 2 inch × 1 inch of the anterior capsule and anterior lens cortex. The subject group included patients with progressive keratoconus who underwent CXL (n = 40) and the control group was comprised of aged-matched patients with non-progressive keratoconus (n = 36). RESULTS: Mean age of the case and control groups was 25.8 ± 4.0 and 25.0 ± 4.1 years, respectively (P = 0.392). Mean lens density in the CXL group was 6.68% ± 0.58% at baseline and 6.77% ± 0.53% at the last visit (P = 0.352). Corresponding figures in the control group were 6.53% ± 0.27% and 6.39% ± 0.31%, respectively (P = 0.213). There was no significant difference between the study groups at baseline or six months later (P = 0.96). CONCLUSION: In this short term study with six months’ follow-up, we observed no significant impact on lens density following exposure of the crystalline lens to ultraviolet A and riboflavin free radicals in the CXL procedure. Medknow Publications & Media Pvt Ltd 2015 /pmc/articles/PMC4568607/ /pubmed/26425312 http://dx.doi.org/10.4103/2008-322X.163776 Text en Copyright: © Journal of Ophthalmic and Vision Research http://creativecommons.org/licenses/by-nc-sa/3.0 This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as the author is credited and the new creations are licensed under the identical terms. |
spellingShingle | Original Article Baradaran-Rafii, Alireza Amiri, Mohammad Aghazazeh Mohaghegh, Sahar Zarei-Ghanavati, Mehran Lens Densitometry after Corneal Cross-linking in Patients with Keratoconus Using a Scheimpflug Camera |
title | Lens Densitometry after Corneal Cross-linking in Patients with Keratoconus Using a Scheimpflug Camera |
title_full | Lens Densitometry after Corneal Cross-linking in Patients with Keratoconus Using a Scheimpflug Camera |
title_fullStr | Lens Densitometry after Corneal Cross-linking in Patients with Keratoconus Using a Scheimpflug Camera |
title_full_unstemmed | Lens Densitometry after Corneal Cross-linking in Patients with Keratoconus Using a Scheimpflug Camera |
title_short | Lens Densitometry after Corneal Cross-linking in Patients with Keratoconus Using a Scheimpflug Camera |
title_sort | lens densitometry after corneal cross-linking in patients with keratoconus using a scheimpflug camera |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4568607/ https://www.ncbi.nlm.nih.gov/pubmed/26425312 http://dx.doi.org/10.4103/2008-322X.163776 |
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