Results 21 to 30 of about 2,641 (163)
Non-cycloplegic spherical equivalent refraction in adults:comparison of the double-pass system, retinoscopy, subjective refraction and a table-mounted autorefractor [PDF]
International Journal of Ophthalmology, 2013 AIM:To evaluate the accuracy of spherical equivalent (SE) estimates of a double-pass system and to compare it with retinoscopy, subjective refraction and a table-mounted autorefractor.METHODS: Non-cycloplegic refraction was performed on 125 eyes of 65 ...
Meritxell Vilaseca +4 more
doaj +1 more source
Achieving Optimal Correction for Young Myopic Children: A Concept Study
Biomedicine Hub, 2022 The purpose of this article is to explore alternative ways of achieving optimal correction for myopic children who cannot cooperate to subjective manifest refraction (SR).
Sara Bøgelund Rasmussen +2 more
doaj +1 more source
A comparison of cycloplegic autorefraction and retinoscopy in Indian children [PDF]
Clinical and Experimental Optometry, 2017 Correction of significant refractive errors in childhood helps in preventing amblyopia and strabismus. India has a huge demand for eye-care services related to uncorrected refractive errors with limited manpower resources. This can be overcome by autorefractors, which are free of operator bias, do not need skilled eye-care professionals and can be ...
Sujata, Guha +5 more
openaire +2 more sources
Central and Peripheral Autorefraction Repeatability in Normal Eyes [PDF]
Optometry and Vision Science, 2014 ABSTRACT Purpose To determine the between‐visit repeatability of peripheral autorefraction measurements using the Grand Seiko WAM‐5500 in normal eyes. Methods Cycloplegic autorefraction of the right eye was measured ...
Kelly E, Moore, David A, Berntsen
openaire +2 more sources
Effects of short-term wear of silicone hydrogel contact lenses on refractive behaviour
African Vision and Eye Health, 2012 Contact lens wear is known to induce change in both the cornea and refractive state. Often a shift towards increased myopia is noted. Historically investigations into the effects of contact lenses onrefractive state have often been incomplete in terms of
W. D. H. Gillan
doaj +1 more source
Journal of Cataract and Refractive Surgery, 2019 To study the agreement between manifest refraction and objective refraction measured with two autorefractor models and an aberrometer in eyes implanted with a trifocal diffractive intraocular lens (IOL).IOA Madrid Innova Ocular, Madrid, Spain.Prospective comparative cohort study.An autorefractor keratometer (KR-8800), based on a Scheiner double pinhole,
Garzón, Nuria +4 more
openaire +3 more sources
BMC Ophthalmology, 2021 Background To evaluate the necessity of cycloplegia for epidemiological studies of refraction in Chinese young adults (aged 17–22 years) with dark irises, and to compare the cycloplegic effects of 1% cyclopentolate and 0.5% tropicamide in them. Methods A
Ruxia Pei +9 more
doaj +1 more source
Objective autorefraction in posterior chamber pseudophakia. [PDF]
British Journal of Ophthalmology, 1990 Automated refraction with the Canon RK-1 Autoref keratometer was evaluated in 110 eyes (110 patients) six to eight weeks after they had undergone extracapsular cataract extraction with posterior chamber intraocular lens implantation and achieved a best corrected visual acuity of at least 6/12. Autorefraction readings were obtained in 100 (91%) of these
P S, Raj, T, Akingbehin, A M, Levy
openaire +2 more sources
Journal 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
Open versus closed view autorefraction in young adults [PDF]
Journal of Optometry, 2021 While there are numerous studies comparing open-view autorefractors to subjective refraction or other open-view autorefractors, most studies between closed and open-view autorefraction tend to focus on children rather than young adults. The aim of this study was to determine the concordance in non-cycloplegic refractive error between two modern ...
Nagra, M. +3 more
openaire +4 more sources