Results 1 to 10 of about 828,745 (178)

Characteristics of posterior corneal astigmatism in different stages of keratoconus [PDF]

open access: yesJournal of Ophthalmic & Vision Research, 2018
Purpose: To evaluate the magnitudes and axis orientation of anterior corneal astigmatism (ACA) and posterior corneal astigmatism (PCA), the ratio of ACA to PCA, and the correlation between ACA and PCA in the different stages of keratoconus (KCN). Methods:
Fereshteh Aslani   +5 more
doaj   +5 more sources

Contribution of Posterior Corneal Astigmatism to Total Corneal Astigmatism in a Sample of Egyptian Population [PDF]

open access: yesClinical Ophthalmology, 2020
Mohamed Hosny, Alaa Badawy, Lobna Khazbak, Mohamed Anis, Sarah Azzam Ophthalmology, Cairo University, Giza, EgyptCorrespondence: Mohamed HosnyOphthalmology, Cairo University, 84 Shehab Street, Mohandeseen, Giza 12411, EgyptTel +20 1000007675Email ...
Hosny M   +4 more
doaj   +5 more sources

The Impact of Posterior Corneal Astigmatism on Surgically Induced Astigmatism in Cataract Surgery [PDF]

open access: yesInternational Journal of General Medicine, 2022
Wenjie Liu,* Lichun Yang,* Jiewei Liu Cataract Department, Shanxi Eye Hospital, Taiyuan, Shanxi Province, People’s Republic of China*These authors contributed equally to this workCorrespondence: Jiewei Liu, Email jieweiliu1967@163.comPurpose:
Liu W, Yang L, Liu J
doaj   +4 more sources

Posterior corneal astigmatism: a review article [PDF]

open access: yesClinical Optometry, 2019
Seyed-Farzad Mohammadi,1 Masoud Khorrami-Nejad,1,2 Moein Hamidirad21Translational Ophthalmology Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran; 2School of Rehabilitation, Shahid Beheshti University of Medical ...
Mohammadi SF   +2 more
doaj   +5 more sources

Effect of the posterior corneal surface on total corneal astigmatism in patients with age-related cataract [PDF]

open access: yesInternational Journal of Ophthalmology, 2018
AIM: To explore the effect of the posterior astigmatism on total corneal astigmatism and evaluate the error caused by substituting the corneal astigmatism of the simulated keratometriy (simulated K) for the total corneal astigmatism in age-related ...
Hui Song, Xin Tang
exaly   +4 more sources

Distribution and related factors of corneal regularity and posterior corneal astigmatism in cataract patients [PDF]

open access: yesClinical Ophthalmology, 2019
Chen Li, Jiaju Zhang, Xue Yin, Jianqing Li, Yihong Cao, Peirong LuDepartment of Ophthalmology, The First Affiliated Hospital of Soochow University, Suzhou, People’s Republic of ChinaPurpose: To study the distribution of posterior corneal ...
Li C, Zhang J, Yin X, Li J, Cao Y, Lu P
doaj   +5 more sources

Effect of 1.8-mm steep-axis clear corneal incision on the posterior corneal astigmatism in candidates for toric IOL implantation [PDF]

open access: yesBMC Ophthalmology, 2020
Background In the present study, we aimed to analyze the effects of cataract surgery using a 1.8-mm steep-axis clear corneal incision (CCI) on the posterior corneal surfaces based on the keratometry from the rotating Scheimpflug imaging device (Pentacam ...
Xi Li, Xiang Chen, Suhong He, Wen Xu
doaj   +2 more sources

Age-related changes in corneal parameters in the Turkish population: a Pentacam-based study [PDF]

open access: yesBMC Ophthalmology
Purpose To evaluate anterior and posterior corneal surfaces and anterior segment parameters in the Turkish population using Pentacam, and to analyze age-related changes.
Denizcan Özizmirliler, İsmet Durak
doaj   +2 more sources

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