Results 21 to 30 of about 58,504 (253)

Autorefraction, Retinoscopy, Javal’s Rule, and Grosvenor’s Modified Javal’s Rule: The Best Predictor of Refractive Astigmatism

open access: yesJournal of Ophthalmology, 2016
The aim of the study was to determine the level of agreement between Javal’s rule, autorefraction, retinoscopy, and refractive astigmatism and to determine which technique is the most suitable substitute when subjective refraction is not applicable using
Kofi Asiedu   +2 more
doaj   +1 more source

Effects of age and Refractive Errors on Stereopsis

open access: yesTürk Oftalmoloji Dergisi, 2011
Pur po se: To investigate the effects of age and refractive errors on stereopsis. Ma te ri al and Met hod: The present study included 1488 cases which were randomly selected, had full vision and no eye pathology except refractive errors.
Aykut Arslan Yıldız   +1 more
doaj   +1 more source

Wave Trajectory Study on the Coast of Lhoknga, Aceh Besar, Indonesia: A Numerical Model Approach

open access: yesCivil Engineering Dimension, 2018
A numerical model of wave trajectory using shoaling and refraction formula was proposed in the coastal waters of Lhoknga, Aceh Besar, Indonesia. The developed model used a two dimensional (2D) numerical methods for wave trajectory with the input of wave ...
Ichsan Setiawan, Mohammad Irham
doaj   +1 more source

Short-term refractive and ocular parameter changes after topical atropine

open access: yesTaiwan Journal of Ophthalmology, 2020
PURPOSE: The purpose of this study is to explore short-term refractive and ocular parameter changes and their correlations after cycloplegia with atropine.
Min-Chieh Ho   +4 more
doaj   +1 more source

Topography-modified refraction: adjustment of treated cylinder amount and axis to the topography versus standard clinical refraction in myopic topography-guided LASIK [PDF]

open access: yes, 2017
Noel Alpins1,2 1NewVision Clinics, Melbourne, VIC, Australia; 2Department Ophthalmology, Melbourne University, Melbourne, VIC, Australia It is encouraging to see the results in the article by Kanellopoulos “Topography-modified refraction (TMR)
Alpins N, Alpins, N, Noel Alpins
core   +1 more source

Indices of refraction in children with pseudophakia predisposed to abnormal refractive error changes after congenital cataract extraction

open access: yesРоссийский офтальмологический журнал, 2020
Purpose. To study refractive indices in children with a predisposition to myopia and hyperopia after congenital cataract extraction and IOL  implantation.Material  and methods.
L. S. Khamraeva   +3 more
doaj   +1 more source

EFFECT OF SOLAR ECLIPSES ON RADIOWAVE PROPAGATION IN THE TROPOSPHERE [PDF]

open access: yesРадиофизика и электроника, 2015
Energy of solar eclipses significantly influences the variation of geophysical fields and leads to a change of processes in the subsystems of the Earth and to disturbance of the existing interactions between them. Observations of each solar eclipse allow
I. M. Mytsenko, D. D. Khalameyda
doaj   +1 more source

Controlling Refraction Using Sub-Wavelength Resonators

open access: yesApplied Sciences, 2018
We construct metamaterials from sub-wavelength nonmagnetic resonators and consider the refraction of incoming signals traveling from free space into the metamaterial.
Yue Chen, Robert Lipton
doaj   +1 more source

Essential Infantile Esotropia: A Course of Treatment From Our Experience

open access: yesFrontiers in Pediatrics, 2021
Background: Essential infantile esotropia (EIE) is the most common type of childhood esotropia. Although its classical approach is surgical, less invasive techniques have been proposed as an adjunct or alternative to traditional surgery.
Stefano Pensiero   +5 more
doaj   +1 more source

The Refraction of the Newborn [PDF]

open access: yesthe american journal of the medical sciences, 1906
n ...
Elschnig,   +2 more
openaire   +1 more source

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