Results 31 to 40 of about 455,466 (310)

Association of Corneal Biomechanics Properties with Myopia in a Child and a Parent Cohort: Hong Kong Children Eye Study

open access: yesDiagnostics, 2021
Associations between corneal biomechanics, axial elongation and myopia are important but previous results are conflicting. Our population-based study aimed to investigate factors associated with corneal biomechanics, and their relationships with myopia ...
Shu-Min Tang   +10 more
doaj   +1 more source

The relationship between axial length/corneal radius of curvature ratio and stress–strain index in myopic eyeballs: Using Corvis ST tonometry

open access: yesFrontiers in Bioengineering and Biotechnology, 2022
Purpose: This study aimed to investigate the correlation of axial length/corneal radius of curvature ratio with stress–strain index (SSI). Methods: Retrospective analysis was conducted to compare the right eyes of those with high myopia (HM, n = 132; age
Z. Chu   +7 more
semanticscholar   +1 more source

Evaluation of central corneal thickness and corneal curvature in patients with rheumatoid arthritis

open access: yesAsian Journal of Medical Sciences, 2022
Background: Rheumatoid arthritis is an autoimmune disease. It is a chronic disease that causes symmetrical deforming type of polyarthritis. Rheumatoid arthritis most commonly involves the anterior segment of the eye. It causes keratoconjunctivitis sicca,
Rubina Huda   +3 more
doaj   +1 more source

The Biomechanical Response of the Cornea in Orthokeratology

open access: yesFrontiers 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   +7 more
doaj   +1 more source

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

Age, gender, corneal diameter, corneal curvature and central corneal thickness in Nigerians with normal intra ocular pressure

open access: yesJournal of Optometry, 2012
Purpose: To investigate the relationship between age, gender, corneal diameter, central corneal curvature, central corneal thickness (CCT) and intraocular pressure in Nigerians with normal intraocular pressure.
Eghosasere Iyamu, Ebi Osuobeni
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

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

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

Dr. Father Waclaw Szuniewicz, a forgotten pioneer in refractive surgery and his work in China [PDF]

open access: yesInternational Journal of Ophthalmology, 2021
Father Wacław Szuniewicz (1891-1963) was a skilled ophthalmic surgeon, missionary, and teacher. For several years he worked in China, afterwards in the United States and in Brazil.
Piotr Kanclerz, Andrzej Grzybowski
doaj   +1 more source

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