Relation of Corneal Astigmatism with Various Corneal Image Quality Parameters in a Large Cohort of Naïve Corneas

Relation of Corneal Astigmatism with Various Corneal Image Quality Parameters in a Large Cohort of Naïve Corneas

Mohamed Omar Yousif,1,2 Rania Serag Elkitkat,1,3 Noha Abdelsadek Alaarag,1 Abdelrhman Shams,1 Hesham Mohamed Gharieb1,4 1Faculty of Medicine, Ain Shams University, Cairo, Egypt; 2Maadi Eye Subspecialty Center, Cairo, Egypt; 3Al Watani Eye Hospitals, Cairo, Egypt; 4Research and Development Department...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Omar Yousif M, Elkitkat RS, Abdelsadek Alaarag N, Shams A, Gharieb HM
Formato: article
Lenguaje:EN
Publicado: Dove Medical Press 2020
Materias:
sirius topographer
corneal astigmatism
corneal image quality
higher order aberrations
customized versus optimized laser corne-al ablation
Ophthalmology
RE1-994
Acceso en línea:https://doaj.org/article/a047292529104a6b9054644e3b7764df
Etiquetas: Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
id oai:doaj.org-article:a047292529104a6b9054644e3b7764df
record_format dspace
spelling oai:doaj.org-article:a047292529104a6b9054644e3b7764df2021-12-02T12:29:41ZRelation of Corneal Astigmatism with Various Corneal Image Quality Parameters in a Large Cohort of Naïve Corneas1177-5483https://doaj.org/article/a047292529104a6b9054644e3b7764df2020-08-01T00:00:00Zhttps://www.dovepress.com/relation-of-corneal-astigmatism-with-various-corneal-image-quality-par-peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483Mohamed Omar Yousif,1,2 Rania Serag Elkitkat,1,3 Noha Abdelsadek Alaarag,1 Abdelrhman Shams,1 Hesham Mohamed Gharieb1,4 1Faculty of Medicine, Ain Shams University, Cairo, Egypt; 2Maadi Eye Subspecialty Center, Cairo, Egypt; 3Al Watani Eye Hospitals, Cairo, Egypt; 4Research and Development Department, Eye World Hospital, Giza, EgyptCorrespondence: Abdelrhman Shams Cairo, EgyptTel +201222131012Email abdelrhmanshams@hotmail.comPurpose: To investigate the relationship between corneal astigmatism and corneal image quality parameters (i.e., root mean square [RMS] of some major corneal higher order aberrations [HOAs] “namely RMS of coma aberrations, RMS of trefoil aberrations, and RMS of spherical aberration [RMS-SA]” and Strehl ratio [SR] of point spread function [PSF]) by using the Sirius topographer (CSO Italia, Florence, Italy).Patients and Methods: This cross-sectional study used the Sirius topographer to evaluate the naïve corneas of right eyes (n = 1,356). The study included three groups which were based on the mean anterior corneal astigmatism value (group 1, < 1 D; group 2, 1– 2 D; and group 3, > 2 D).Results: The corneal astigmatism showed statistically significant (yet narrow clinical) differences among the groups regarding all the examined parameters (P< 0.001), except for the RMS-SA (which was statistically insignificant among the three groups). Correlation coefficients were weak between the corneal astigmatism and HOAs (correlation coefficient “r” not reaching 0.2 with any of the evaluated HOAs).Conclusion: Significant differences existed among the astigmatic groups regarding corneal HOAs, but the mean values were very close. The deduced relations between corneal astigmatism and corneal image quality parameters had limited clinical relevance. Thus, the corneal astigmatism should be evaluated separately from corneal image quality parameters, either when deciding between refractive correction modalities (customized versus optimized ablation techniques) or when evaluating corneal image quality of a naïve cornea.Keywords: Sirius topographer, corneal astigmatism, corneal image quality, higher order aberrations (HOAs), customized versus optimized laser corneal ablationOmar Yousif MElkitkat RSAbdelsadek Alaarag NShams AGharieb HMDove Medical Pressarticlesirius topographercorneal astigmatismcorneal image qualityhigher order aberrationscustomized versus optimized laser corne-al ablationOphthalmologyRE1-994ENClinical Ophthalmology, Vol Volume 14, Pp 2203-2210 (2020)
institution DOAJ
collection DOAJ
language EN
topic sirius topographer
corneal astigmatism
corneal image quality
higher order aberrations
customized versus optimized laser corne-al ablation
Ophthalmology
RE1-994
spellingShingle sirius topographer
corneal astigmatism
corneal image quality
higher order aberrations
customized versus optimized laser corne-al ablation
Ophthalmology
RE1-994
Omar Yousif M
Elkitkat RS
Abdelsadek Alaarag N
Shams A
Gharieb HM
Relation of Corneal Astigmatism with Various Corneal Image Quality Parameters in a Large Cohort of Naïve Corneas
description Mohamed Omar Yousif,1,2 Rania Serag Elkitkat,1,3 Noha Abdelsadek Alaarag,1 Abdelrhman Shams,1 Hesham Mohamed Gharieb1,4 1Faculty of Medicine, Ain Shams University, Cairo, Egypt; 2Maadi Eye Subspecialty Center, Cairo, Egypt; 3Al Watani Eye Hospitals, Cairo, Egypt; 4Research and Development Department, Eye World Hospital, Giza, EgyptCorrespondence: Abdelrhman Shams Cairo, EgyptTel +201222131012Email abdelrhmanshams@hotmail.comPurpose: To investigate the relationship between corneal astigmatism and corneal image quality parameters (i.e., root mean square [RMS] of some major corneal higher order aberrations [HOAs] “namely RMS of coma aberrations, RMS of trefoil aberrations, and RMS of spherical aberration [RMS-SA]” and Strehl ratio [SR] of point spread function [PSF]) by using the Sirius topographer (CSO Italia, Florence, Italy).Patients and Methods: This cross-sectional study used the Sirius topographer to evaluate the naïve corneas of right eyes (n = 1,356). The study included three groups which were based on the mean anterior corneal astigmatism value (group 1, < 1 D; group 2, 1– 2 D; and group 3, > 2 D).Results: The corneal astigmatism showed statistically significant (yet narrow clinical) differences among the groups regarding all the examined parameters (P< 0.001), except for the RMS-SA (which was statistically insignificant among the three groups). Correlation coefficients were weak between the corneal astigmatism and HOAs (correlation coefficient “r” not reaching 0.2 with any of the evaluated HOAs).Conclusion: Significant differences existed among the astigmatic groups regarding corneal HOAs, but the mean values were very close. The deduced relations between corneal astigmatism and corneal image quality parameters had limited clinical relevance. Thus, the corneal astigmatism should be evaluated separately from corneal image quality parameters, either when deciding between refractive correction modalities (customized versus optimized ablation techniques) or when evaluating corneal image quality of a naïve cornea.Keywords: Sirius topographer, corneal astigmatism, corneal image quality, higher order aberrations (HOAs), customized versus optimized laser corneal ablation
format article
author Omar Yousif M
Elkitkat RS
Abdelsadek Alaarag N
Shams A
Gharieb HM
author_facet Omar Yousif M
Elkitkat RS
Abdelsadek Alaarag N
Shams A
Gharieb HM
author_sort Omar Yousif M
title Relation of Corneal Astigmatism with Various Corneal Image Quality Parameters in a Large Cohort of Naïve Corneas
title_short Relation of Corneal Astigmatism with Various Corneal Image Quality Parameters in a Large Cohort of Naïve Corneas
title_full Relation of Corneal Astigmatism with Various Corneal Image Quality Parameters in a Large Cohort of Naïve Corneas
title_fullStr Relation of Corneal Astigmatism with Various Corneal Image Quality Parameters in a Large Cohort of Naïve Corneas
title_full_unstemmed Relation of Corneal Astigmatism with Various Corneal Image Quality Parameters in a Large Cohort of Naïve Corneas
title_sort relation of corneal astigmatism with various corneal image quality parameters in a large cohort of naïve corneas
publisher Dove Medical Press
publishDate 2020
url https://doaj.org/article/a047292529104a6b9054644e3b7764df
work_keys_str_mv AT omaryousifm relationofcornealastigmatismwithvariouscornealimagequalityparametersinalargecohortofnaiumlvecorneas
AT elkitkatrs relationofcornealastigmatismwithvariouscornealimagequalityparametersinalargecohortofnaiumlvecorneas
AT abdelsadekalaaragn relationofcornealastigmatismwithvariouscornealimagequalityparametersinalargecohortofnaiumlvecorneas
AT shamsa relationofcornealastigmatismwithvariouscornealimagequalityparametersinalargecohortofnaiumlvecorneas
AT ghariebhm relationofcornealastigmatismwithvariouscornealimagequalityparametersinalargecohortofnaiumlvecorneas
_version_ 1718394469302140928

Ejemplares similares