Results 1 to 10 of about 365,280 (180)

Accuracy of intraocular lens calculation formulas in cataract patients with steep corneal curvature [PDF]

PLoS ONE, 2020
ObjectiveTo compare the accuracy of five kinds of intraocular lens calculation formulas (SRK/T, Haigis, Hoffer Q, Holladay and Barrett Universal Ⅱ) in cataract patients with steep curvature cornea ≥ 46.0 diopters.MethodsThis is a retrospective study of ...
Chenguang Zhang, Tiezhu Lin, Eric E Pazo
exaly   +7 more sources

Effects of steep-axis incision on corneal curvature in one-handed phacoemulsification [PDF]

International Journal of Ophthalmology, 2019
AIM: To examine the effects of one-handed phacoemulsification with steep-axis incision on corneal curvature and analyze surgically induced astigmatism (SIA) on the true net power, anterior and posterior corneal surfaces. METHODS: Patients with cataracts
Huai-Jin Guan
exaly   +4 more sources

Agreement of corneal curvature and central corneal thickness obtained from a swept-source OCT and Pentacam in ectopia lentis patients [PDF]

International Journal of Ophthalmology, 2020
AIM: To assess the inter-device consistency of corneal curvature and central corneal thickness between Pentacam and a swept-source Fourier-domain anterior segment optical coherence tomography (AS-OCT) in ectopia lentis patients. METHODS: Totally 72 eyes
Guang-Ming Jin, Bing Xiao, Yi-Jing Zhou, Yi-Yao Wang, Xue-Pei Li, Dan-Ying Zheng   +5 more
exaly   +2 more sources

Comparison between the CASIA SS-1000 and Pentacam in measuring corneal curvatures and corneal thickness maps [PDF]

BMC Ophthalmology, 2023
Purpose To compare the intra-device repeatability and inter-device reproducibility between two anterior segment imaging instruments, the CASIA SS-1000 (Tomey Corp., Nagoya, Japan) and Pentacam (OCULUS, Arlington, WA) in measuring anterior segment ...
Robert M. Feldman, Gene Kim, Alice Z. Chuang, Atsushi Shiraishi, Keiichiro Okamoto, Makoto Tsukamoto   +5 more
doaj   +2 more sources

Systematic Differences in Corneal Curvature and Power Measurements Between the IOLMaster 700 and the Anterion and Mapping Strategies for Cross-Device Use [PDF]

Diagnostics
Background/Objectives: Corneal power has the largest impact on the variability of intraocular lens (IOL) power predictions, and corneal data from different biometers cannot be used interchangeably.
Achim Langenbucher, Jascha Armin Wendelstein, Alan Cayless, Peter Hoffmann, Nóra Szentmáry   +4 more
doaj   +2 more sources

Ocular biometry agreement among ZW-30, IOLMaster 700, and sirius in cataract patients [PDF]

Scientific Reports
Accurate ocular biometry is crucial for the success of refractive cataract surgery. This study aims to assess the consistency and differences of a new biometer, the ZW-30, compared with the mainstream devices IOLMaster 700 and Sirius in patients with ...
Junjie Yang, Nijuan Yang, Yuying Xiang, Rui Li, Xuan Yu, Ling Jin, Yukan Huang   +6 more
doaj   +2 more sources

Corneal morphological changes after discontinuation of long-term orthokeratology and SMILE surgery outcomes: a retrospective comparative study [PDF]

BMC Ophthalmology
Background Orthokeratology (OK) has been widely adopted as a non-surgical intervention to slow myopia progression in children and adolescents. In China, where myopia prevalence is exceptionally high, OK lenses are commonly prescribed to school-aged ...
Kun Zhou, Xiaohuan Ma, Di Shen, Wenjia Cao, Xiyu Sun, Mengchen Li, Wei Wei   +6 more
doaj   +2 more sources

Interocular agreement and differences of ocular growth in cataract patients [PDF]

Scientific Reports
We performed this study to investigate the interocular agreement and differences in ocular growth in cataract patients. Ocular biometrics in both eyes of 715 cataract patients were measured by Lenstar LS-900 and retrospectively collected.
Ling Jin, Yue Wu, Feng Zhang, Chunwen Zheng, Wenxuan Wang, Xiaoning Hao, Yuling Niu, Duanrong Cao, Yijun Hu   +8 more
doaj   +2 more sources

Cornea biomechanics and biometric evaluations in immunoglobulin G4-related ophthalmic disease. [PDF]

PLoS ONE
PurposeTo evaluate the corneal biomechanical and biometric properties in immunoglobulin G4-related ophthalmic disease (IgG4-ROD) patients.SettingEthnic Han Chinese biopsy-proven IgG4-ROD patients from a territory wide cohort and sex-, age-, smoking- and ...
Kenneth Ka Hei Lai, Fatema Mohamed Ali Abdulla Aljufairi, Jake Uy Sebastian, Xulin Liao, Wanxue Chen, Zhichao Hu, Yingying Wei, Ruofan Jia, Cheuk Wah, Andy Chi On Cheng, Joyce Kar Yee Chin, Andrew Kt Kuk, Chi Ho Kwong, Nelson Kwok Foo Yip, Wendy Lam, Kenneth Kai Wai Li, Ngai Yang, Wilson Wai Kuen Yip, Alvin Lerrmann Young, Edwin Chan, Callie Ka Li Ko, Carmen Ka Man Chan, Hunter Kwok Lai Yuen, Li Jia Chen, Clement Chee Yung Tham, Chi Pui Pang, Kelvin Kam Lung Chong   +26 more
doaj   +2 more sources

The Biomechanical Response of the Cornea in Orthokeratology

Frontiers in Bioengineering and Biotechnology, 2021
Orthokeratology has been widely used to control myopia, but the mechanism is still unknown. To further investigate the underlying mechanism of corneal reshaping using orthokeratology lenses via the finite element method, numerical models with different ...
Jinfang Wu, Wenxuan Fang, Huiwen Xu, Huiwen Xu, Xiaode Liu, Xiaode Liu, Dongliang Zhao, Qiguo Rong   +7 more
doaj   +1 more source