Results 21 to 30 of about 276,917 (287)

Age- and gender-related characteristics of astigmatism in a myopic population

open access: yesFrontiers in Medicine, 2022
PurposeTo explore age- and gender-related differences of refractive and corneal astigmatism in myopic patients looking for refractive surgery.DesignA retrospective cross-sectional study.Materials and methodsThe medical files of candidates looking for ...
Shan Yang, Yang Jiang, Ge Cui, Ying Li
doaj   +1 more source

Corneal topographic changes in premenopausal and postmenopausal women

open access: yesBMC Ophthalmology, 2007
Background To asses the effect of menopause on the corneal curvature changes using corneal computerized videokeratography (CVK) in premenopausal and postmenopausal healthy women. Methods Thirty-six postmenopausal women with mean ages of 49.2 (range 39 to
Aytan Hakan   +5 more
doaj   +1 more source

Investigation of ocular biometry in 4– to 9-year-old Chinese children

open access: yesBMC Ophthalmology, 2023
Purpose To investigate the distribution and changes in ocular biometry in 4-to to 9-year-old Chinese children and to compare the differences between age and genders in these parameters. Methods This was a school-based cross-sectional study.
Ming-Hui Zhao   +6 more
doaj   +1 more source

Miniscleral lens wear influences corneal curvature and optics [PDF]

open access: yes, 2016
Purpose\ud \ud Transient changes in corneal topography associated with soft and conventional or reverse geometry rigid contact lens wear have been well documented; however, only a few studies have examined the influence of scleral contact lens wear upon ...
Vincent, Stephen J.   +7 more
core   +1 more source

Reverse engineering as a teaching tool: the corneal topographer [PDF]

open access: yes, 2012
Reverse engineering is the process of discovering the technological principles of a device, object or system through analysis of its structure, function, and operation.
Mas, David   +6 more
core   +2 more sources

Corneal changes in soft contact lens wearers

open access: yesJournal of Clinical Ophthalmology and Research, 2016
There is abundance of physiological and pathological evidence of individual variations in response to soft contact lens wear. Purpose of the study was to observe and to measure changes in corneal curvature, corneal endothelium, corneal thickness and tear-
Reshma Ramakrishnan   +2 more
doaj   +1 more source

A Fractal Approach to Nonlinear Topographical Features of Healthy and Keratoconus Corneas Pre- and Post-Operation of Intracorneal Implants

open access: yesFractal and Fractional, 2022
Fractal dimension (FD) together with advances in imaging technologies has provided an increasing application of digital images to interpret biological phenomena.
Shima Bahramizadeh-Sajadi   +5 more
doaj   +1 more source

Analysis of potential impact factors of corneal biomechanics in myopia

open access: yesBMC Ophthalmology, 2023
Purpose To investigate potential impact factors associated with corneal biomechanical properties in Chinese myopia and further to investigate quantifying corneal biomechanics in clinical work. Methods Three hundred fifty-five eyes from 181 healthy myopic
Yangrui Du   +5 more
doaj   +1 more source

Evaluation of interface quality in organ-cultured lamellar corneal transplants [PDF]

open access: yes, 2012
Background: With increasing numbers of lamellar keratoplasties, eye banks are challenged to deliver precut lamellar donor tissue. In Europe, the most common technique of corneal storage is organ culture which requires a deswelling process before surgical
Kohnen, Thomas   +7 more
core   +1 more source

Repeatability and reproducibility of Keratograph 5M corneal topography [PDF]

open access: yesPeerJ
Background Corneal topography is an important diagnostic tool and highly repeatable and reproducible topographic devices are essential in eye care practice.
Sara Ortiz-Toquero   +2 more
doaj   +2 more sources

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