Results 31 to 40 of about 78,366 (184)

Corneal Geometry and Refractive Fluctuations Throughout the Day in Orthokeratology Wearers: A Preliminary Study [PDF]

Vision
Despite the widespread use of orthokeratology (ortho-k), the diurnal behavior of corneal geometry after lens removal remains unclear. This prospective observational study evaluated diurnal variations in corneal geometry, refractive error, and visual ...
Laura Barberán-Bernardos, Miguel Ángel Ariza-Gracia, David P. Piñero   +2 more
doaj   +2 more sources

Posterior corneal curvature changes following Refractive Small Incision Lenticule Extraction [PDF]

Clinical Ophthalmology, 2015
Sri Ganesh, Utsav Patel, Sheetal Brar Phaco and Refractive Surgery Department, Nethradhama Superspeciality Eye Hospital, Bengaluru, Karnataka, India Purpose: To compare the posterior corneal curvature changes, in terms of corneal power and asphercity ...
Ganesh S, Patel U, Brar S
doaj   +2 more sources

Ocular biometrics in eyes with different white-to-white corneal diameter in young myopic adults

Scientific Reports
The interactions between white-to-white corneal diameter (WTW) and other ocular biometrics are important for planning of refractive surgery and understanding of ocular structural changes in myopia, but such interactions are rarely investigated in young ...
Li Jiang, Zijing Du, Changting Tang, Shanqing Zhu, Lu Xiong, Xuejun Fang, Jin Zhou, Qingsong Zhang, Wei Sun, Qingyan Zeng, Xiaohua Lei, Zheng Wang, Yijun Hu   +12 more
doaj   +2 more sources

Clinical outcomes of Bowman-Stromal inlay and corneal collagen crosslinking in contralateral eyes in patients with progressive keratoconus [PDF]

Indian Journal of Ophthalmology
Purpose: This study aims to report the outcomes of Bowman–Stromal Inlay (BSI) versus corneal collagen crosslinking (CXL) in patients with progressive keratoconus.
Neha Jain, Vikas Mittal, Yatri Pandya, Vibha Yadav, Vishwa Shah, Debapriya Chatterjee   +5 more
doaj   +2 more sources

Effects of Aberrant Pax6 Gene Dosage on Mouse Corneal Pathophysiology and Corneal Epithelial Homeostasis [PDF]

, 2011
Background: Altered dosage of the transcription factor PAX6 causes multiple human eye pathophysiologies. PAX6(+/-) heterozygotes suffer from aniridia and aniridia-related keratopathy (ARK), a corneal deterioration that probably involves a limbal ...
Fullwood, Nigel J., Martin, Francis L., Collinson, J. Martin, Richard L Mort, Morley, Steven D., Morley Steven D., West John D., Bentley, Adam J., Adam J Bentley, Mort, Richard L, Collinson J. Martin, Panagiotis Douvaras, Collinson, J Martin, J Martin Collinson, Bentley Adam J., Mort Richard L., Martin, Francis L, Bentley, Adam J, Morley, Steven D, Martin Francis L., Douvaras, Panagiotis, Steven D Morley, Robert E Hill, Mort, Richard L., West, John D., Hill, Robert E, Fullwood, Nigel J, Nigel J Fullwood, Douvaras Panagiotis, Fullwood Nigel J., Francis L Martin, Hill Robert E., Hill, Robert E., West, John D, John D West   +34 more
core   +5 more sources

Evaluation of corneal symmetry after UV corneal crosslinking for keratoconus

Clinical Ophthalmology, 2017
Hanan Mofty,1,2 Khaled Alzahrani,2 Fiona Carley,3 Sophie Harper,3 Arun Brahma,3 Leon Au,3 Debbie Morley,3 M Chantal Hillarby2 1Optometry Department, College of Applied Medical Science, King Saud University, Riyadh, Kingdom of Saudi Arabia; 2Division of ...
Mofty H, Alzahrani K, Carley F, Harper S, Brahma A, Au L, Morley D, Hillarby MC   +7 more
doaj   +1 more source

Influence of different parameters on the corneal asphericity (Q value) assessed with progress in biomedical optics and imaging – A review [PDF]

Heliyon
Sura Sawalha, Associated Prof. Dr. Zainab T. Al-Sharify, Yeng Weng Leong   +2 more
exaly   +2 more sources

Asphericity of the human cornea for different corneal diameters

, 2007
PURPOSE: To measure the anterior corneal asphericity (Q) with different corneal diameters. SETTING: Department of Physics (Optometry), University of Minho, Braga, Portugal. METHODS: Thirty-six eyes of 36 patients were evaluated using a videokeratoscope, and the Q-values were recorded.
González-Méijome, José Manuel, Villa-Collar, César, Montés-Micó, Robert, Gomes, Antonio   +3 more
openaire   +2 more sources

Q-value customized versus wavefront-optimized ablation in femtosecond laser-assisted LASIK for myopia and myopic astigmatism: a prospective contralateral comparative study

Eye and Vision, 2022
Background Corneal refractive surgery for myopia results in an oblate shift with increased postoperative aberrations inversely affecting the quality of vision. Aspheric ablation profiles have been introduced to minimize such a problem.
Magdi Mohammad Mostafa, Hazem Abdelmotaal, Khaled Abdelazeem, Islam Goda, Mahmoud Abdel-Radi   +4 more
doaj   +1 more source

A multicenter study of interocular symmetry of corneal biometrics in Chinese myopic patients

Scientific Reports, 2021
It is essential to know the normal range of the interocular symmetry of the cornea (ISC) for keratoconus diagnosis and corneal substitutes design. In the present study we investigated the interocular symmetry of corneal biometrics in 6,644 Chinese myopic
Guihua Xu, Yijun Hu, Shanqing Zhu, Yunxiang Guo, Lu Xiong, Xuejun Fang, Jia Liu, Qingsong Zhang, Na Huang, Jin Zhou, Fangfang Li, Xiaohua Lei, Li Jiang, Zheng Wang   +13 more
doaj   +1 more source