Results 161 to 170 of about 78,366 (184)

[Changes of asphericity of posterior corneal surface after corneal refractive surgery].

[Zhonghua yan ke za zhi] Chinese journal of ophthalmology, 2011
To investigate the changes of the asphericity (Q-value) of the posterior corneal surface with different corneal diameters after corneal refractive surgery.One hundred and fifteen myopic eyes of 115 subjects undertaken corneal refractive surgery (59 LASIK and 56 EPI-LASIK) were enrolled in this prospective study.
Jie, Hou, Yan, Wang, Jing, Li, Xiao-yan, Yang, Lin, Zhang   +4 more
openaire   +1 more source

Custom Manipulation of Corneal Asphericity (The Q Factor)

2018
When ablating the cornea with a myopic wavefront optimized (WFO) or aberration-free profile, the cornea is always going to receive more ablation in the centre than in the periphery of the optical zone and this will lead to the induction of spherical aberration. With manipulation of corneal asphericity, the final corneal asphericity can be influenced to
Fernando Faria-Correia, Renato Ambrósio, José Ferreira Mendes, Arthur B. Cummings   +3 more
openaire   +1 more source

Corneal asphericity after refractive surgery

Journal of Cataract and Refractive Surgery, 2011
Rosario G, Anera, José Ramón, Jiménez
openaire   +2 more sources

[Analysis of corneal asphericity in patients after phacoemulsification].

[Zhonghua yan ke za zhi] Chinese journal of ophthalmology, 2010
To investigate the distribution of corneal Q-value in the age-related cataract patients and aspherical features of cornea before and after the phacoemulsification (PHACO).Thirty-nine eyes of 30 age-related cataract patients in our department were included.
Hai-wu, Li, Hai-ke, Guo, Hong-yang, Zhang, Mei-ying, Liu   +3 more
openaire   +1 more source

Changes in asphericity of anterior and posterior corneal surfaces for mild–moderate and high myopia after topography-guided FS-LASIK

International Ophthalmology, 2022
Ruihua Wei
exaly  

Three-year change in corneal asphericity in children at the age of emmetropisation

Ophthalmic and Physiological Optics, 2023
Mohammad Hassan Emamian, Alireza Jamali, Hassan Hashemi   +2 more
exaly  

A Dual-Area Aspheric Diffractive Intraocular Lens for Large Corneal Asphericity Variation

Acta Optica Sinica, 2020
谷健达 Gu Jianda, 刘永基 Liu Yongji, 边亚燕 Bian Yayan, 刘宝凯 Liu Baokai, 于浩 Yu Hao   +4 more
openaire   +1 more source

The Importance of Corneal Asphericity and Irregular Astigmatism in Refractive Surgery

Journal of Refractive Surgery, 1990
L T, Nordan, R B, Grene
openaire   +2 more sources

A CROSS-SECTIONAL EVALUATION OF CORNEAL ASPHERICITY IN CHILDREN.

Optometry and Vision Science, 2001
William R Davis, Karla Zadnik, Donald O Mutti, Thomas Raasch, Nina E Friedman   +4 more
openaire   +2 more sources

Corneal asphericity on visual function after refractive surgery

Optik, 2002
José R Jiménez, José A. Díaz, Luis Jiménez Del Barco   +2 more
exaly