Results 21 to 30 of about 24,361 (241)
The Relationship between Corvis ST Tonometry Measured Corneal Parameters and Intraocular Pressure, Corneal Thickness and Corneal Curvature. [PDF]
PLoS ONE, 2015 The purpose of the study was to investigate the correlation between Corneal Visualization Scheimpflug Technology (Corvis ST tonometry: CST) parameters and various other ocular parameters, including intraocular pressure (IOP) with Goldmann applanation ...
Ryo Asaoka +8 more
doaj +1 more source
Diagnostics, 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
Evaluation of central corneal thickness and corneal curvature in patients with rheumatoid arthritis
Asian 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
Posterior corneal surface stability after femtosecond laser-assisted keratomileusis [PDF]
, 2015 The purpose of this study was to evaluate posterior corneal surface variation after femtosecond laser-assisted keratomileusis in patients with myopia and myopic astigmatism. Patients were evaluated by corneal tomography preoperatively and at 1, 6, and 12
Cagini, Carlo +6 more
core +3 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 +7 more
doaj +1 more source
Curvature sensor for the measurement of the static corneal topography and the dynamic tear film topography in the human eye [PDF]
, 2005 A system to measure the topography of the first optical surface of the human eye noninvasively by using a curvature sensor is described. The static corneal topography and the dynamic topography of the tear film can both be measured, and the topographies ...
Gruppetta, S. +3 more
core +3 more sources
An artifact in fits to conic-based surfaces [PDF]
, 2009 It is common in Physiological Optics to fit the corneal and the lens surfaces to conic-based surfaces (usually ellipse-based surfaces), obtaining their characteristic radius of curvature and asphericity.
Dorronsoro, Carlos +2 more
core +3 more sources
Age- and gender-related characteristics of astigmatism in a myopic population
Frontiers 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
Investigation of ocular biometry in 4– to 9-year-old Chinese children
BMC 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
Wavefront curvature sensing for the human eye [PDF]
, 2008 In this paper we present a curvature wavefront sensor for the eye. The layout proposed is novel, whilst the algorithm used has been adapted from previously published work [Roddier, F.; Roddier, C. Appl. Opt. 1991, 30, 1325–1327]. The design of the set-up
Cristiano Torti +5 more
core +1 more source