Results 61 to 70 of about 12,156 (169)

Characteristics of corneal high-order aberrations in adolescents with mild to moderate myopia

BMC Ophthalmology, 2020
Background This study investigated the characteristics of corneal higher-order aberrations (HOAs) of the anterior surface, posterior surface, and total cornea in adolescents with mild to moderate myopia.
Xu Zhang, Jin-Hui Ma, Xin Xi, Lin Guan
doaj   +1 more source

Astigmatic changes after Descemet membrane endothelial keratoplasty (DMEK) in decompensated penetrating keratoplasty grafts

Acta Ophthalmologica, Volume 104, Issue 5, Page e516-e529, August 2026.
Abstract Purpose To evaluate the surgery‐induced changes of astigmatism after Descemet membrane endothelial keratoplasty (DMEK) in eyes with failed previous penetrating keratoplasty (PK). Design Retrospective, interventional cohort study based on prospective DMEK database.
Florian Thomas Steinberg, Jithmi Weliwitage, Marie von Berg, Silvia Schrittenlocher, Simona Schlereth, Claus Cursiefen, Björn Bachmann   +6 more
wiley   +1 more source

Changes in choroidal and retinal thickness 6 months before and during 18 months of orthokeratology lens treatment in myopic children

Acta Ophthalmologica, Volume 104, Issue 5, Page e578-e589, August 2026.
Abstract Purpose To investigate changes in choroidal and retinal thickness before and during myopia control treatment with orthokeratology lenses (OKL) in myopic children. Methods This was a sub‐study of CONTROL and CONTROL2 studies. The present study was a 2‐year, prospective, single‐group interventional study consisting of a 6‐month pre‐treatment ...
P. O. Hansen, F. Møller, T. M. Jakobsen
wiley   +1 more source

Comparison of the effects of single and opposite incision techniques on with-the-rule astigmatism in cataract surgery

BMC Ophthalmology
Purpose To compare the effects of single clear corneal incision (CCI) and opposite clear corneal incision (OCCI) techniques on corneal and total astigmatism in patients undergoing phacoemulsification cataract surgery.
Emine Seker Un, Tunahan Akyol, Osman Parca, Sevket Oguz Belli   +3 more
doaj   +1 more source

Analysis of corneal biometry in a black South African population

African Vision and Eye Health, 2019
Background: Corneal astigmatism and central corneal thickness are important clinical parameters for cataract surgery and glaucoma, respectively. There is very little research on the central corneal thickness and the prevalence and pattern of corneal ...
Thariq Bagus, Kerry Alberto, Michel Muteba, Aubrey Makgotloe   +3 more
doaj   +1 more source

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

Clinical 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  

Effect of steep-axis incisions on anterior and posterior corneal astigmatism and higher-order aberrations after cataract surgery

Frontiers in Medicine
PurposeTo compare the effects of steep-axis versus superior corneal incisions on visual acuity, astigmatism correction, and higher-order aberrations (HOAs) in patients undergoing phacoemulsification with intraocular lens implantation.DesignProspective ...
Kaiyue Du, Kaiyue Du, Zhan Shen, Zhan Shen, Bowei Yuan, Bowei Yuan, Yinan Liu, Yinan Liu, Xiaoyong Chen, Xiaoyong Chen, Jing Hong, Jing Hong   +11 more
doaj   +1 more source

Astigmatism in candidates of Cataract surgery and its relationship with corneal optical power, axial length, sex and patient age [PDF]

Acta Medica Iranica, 2000
This study was conducted to define the prevalence and types of corneal astigmatism in relation with corneal optical power, axial length, sex and patient age. 641 cataract patients were included in a descriptive study.
Siatiri H
doaj  

Mean posterior corneal power and astigmatism in normal versus keratoconic eyes

Journal of Ophthalmic & Vision Research, 2018
Purpose: To compare mean posterior corneal power and astigmatism in normal versus keratoconus affected eyes and determine the optimal cut-off points to maximize sensitivity and specificity in discriminating keratoconus from normal corneas.
Sepehr Feizi, Siamak Delfazayebaher, Mohammad Ali Javadi, Farid Karimian, Vahid Ownagh, Fatemeh Sadeghpour   +5 more
doaj   +1 more source

Measurements of Anterior and Posterior Corneal Curvatures with OCT and Scheimpflug Biometers in Patients with Low Total Corneal Astigmatism. [PDF]

J Clin Med, 2022
Muzyka-Woźniak M, Oleszko A, Grzybowski A.   +2 more
europepmc   +1 more source