Results 81 to 90 of about 385,906 (239)
Corneal thickness and elevation maps computed from optical rotary scans [PDF]
J. Refract. Surg., 20, pp. S576-S580, (2004), 2004 Purpose: Recently the authors presented a technique that allows corneal thickness measurements along any meridian from optical sections obtained using a rotary scanning system. This paper presents 3-D mapping of the corneal thickness and topography of both corneal surfaces, obtained with the rotary system.
arxiv
Extremely asymmetric ectasia: Tomographically unilateral keratoconus
Acta Ophthalmologica, EarlyView.Abstract Purpose To investigate the characteristics of apparently stable forms of tomographically unilateral keratoconus (KC). Methods In this retrospective case–control study, strict unilaterality criteria were applied to select tomographically unilateral cases with ≥3 years of follow‐up.
Hasan Shabani +6 more
wiley +1 more source
Bessel Function Model for Corneal Topography [PDF]
Applied Mathematics and Computation 223 (2013), 436-443, 2011 In this paper we consider a new nonlinear mathematical model for corneal topography formulated as two-point boudary value problem. We derive it from first physical principles and provide some mathematical analysis. The existence and uniqeness theorems are proved as well as various estimates on exact solution.
arxiv
Acta Ophthalmologica, EarlyView.Abstract Purpose To evaluate the effect of artificial tear (AT) application on the repeatability of corneal parameters with three different devices. Methods In this prospective, randomized clinical trial, 145 patients were measured with one of three devices in the Department of Ophthalmology, Goethe University, Frankfurt, Germany.
Titus Schug +3 more
wiley +1 more source
INFLUENCE OF TOPICAL ANAESTHETICS ON CORNEAL TOPOGRAPHY
Офтальмохирургия, 2015 Introduction. By now it is a well-established fact that topical anaesthetics have an influence on IntraOcular pressure. The topical anaesthetic will give a lower intraocular pressure reading.
Claes Feinbaum
doaj
On fractional Bessel equation and the description of corneal topography [PDF]
arXiv, 2012 In this note we apply a modified fractional Bessel differential equation to the problem of describing corneal topography. We find the solution in terms of the power series. This solution has an interesting behavior at infinity which is a generalization of the classical results for modified Bessel function of order 0.
arxiv
Journal of Biomedical Optics, 2017 . Vision loss due to corneal injuries or diseases can be treated by transplantation of human corneal grafts (keratoplasty). However, quality assurance in retrieving and cultivating the tissue transplants is confined to visual and microbiological testing.
A. Damian +3 more
semanticscholar +1 more source
Acta Ophthalmologica, EarlyView.Abstract To determine the effectiveness of various interventions in reducing myopia progression in children. Literature databases were searched on December 2, 2023: PubMed, Embase, the Cochrane Central, Web of Science Core Collection, BIOSIS Previews, Current Contents Connect, Data Citation Index, Derwent Innovations Index, KCI‐Korean Journal Database,
Diana Chabané Schmidt +9 more
wiley +1 more source
Digital interferometric demodulation of Placido mires applied to corneal topography [PDF]
arXiv, 2012 This paper presents a novel digital interferometric method to demodulate Placido fringe patterns. This is a synchronous method which uses a computer-stored conic-wavefront as demodulating reference. Here we focus on the experimental aspects to phase-demodulate Placido mires applied to corneal topography.
arxiv
Clinical &Experimental Ophthalmology, EarlyView.Abstract Background Accurate intraocular lens (IOL) calculation in eyes with keratoconus (KCN) poses significant challenges. While various formulas, including KCN‐specific ones, have been investigated, the optimal calculation method remains inconclusive. Methods The study was pre‐registered in PROSPERO (CRD42023483119).
Olga Reitblat +4 more
wiley +1 more source