Results 11 to 20 of about 41,303 (288)

Refractive and visual function changes in twilight conditions

open access: yesPLoS ONE, 2022
Purpose We investigated the effect of luminance on refraction and visual function under twilight conditions. Methods Twenty young adults (mean age 20.5 ± 0.5 years) without ocular diseases and 20 eyes were included in the study.
Tatsuya Iizuka   +3 more
doaj   +2 more sources

Prediction of cycloplegic refraction for noninvasive screening of children for refractive error.

open access: yesPLoS ONE, 2021
Detection of refractive error in children is crucial to avoid amblyopia and its impact on quality of life. We here performed a retrospective study in order to develop prediction models for spherical and cylinder refraction in children.
Kazuyoshi Magome   +4 more
doaj   +1 more source

Dynamic profile of ocular refraction in pediatric cataract patients after lens surgeries [PDF]

open access: yesInternational Journal of Ophthalmology, 2019
AIM: To study the change in ocular refraction in patients with pediatric cataracts (PCs) after lens extraction. METHODS: A total of 1258 patients who were undergoing cataract extraction with/without intraocular lens (IOL) implantation were recruited ...
Zhen-Zhen Liu   +16 more
doaj   +1 more source

Refractive errors in premature infants with retinopathy of prematurity after anti-vascular endothelial growth factor (anti-VEGF) therapy [PDF]

open access: yesVojnosanitetski Pregled, 2017
Background/Aim. Retinopathy of prematurity (ROP) is a vasoproliferative retinopathy which affects the blood vessels of the retina during its development. The aim of this study was to evaluate the incidence and the degree of refractive errors in premature
Vujanović Milena S.   +7 more
doaj   +1 more source

Evaluation of ocular biometry in the Japanese population using a multicenter approach: Prospective observational study

open access: yesPLoS ONE, 2022
This prospective observational study aimed to evaluate the ocular biometry of Japanese people through a multicenter approach. The uncorrected and corrected distance visual acuity (UDVA and CDVA, respectively) in the log minimum angle of resolution ...
Takushi Kawamorita   +14 more
doaj   +2 more sources

The effect of viewing distance on subjective refraction assessment [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2021
Accurate detection of subjective refraction is important to provide patients with the best visual quality. One of the factors affecting detection of subjective refraction is viewing distance.
Alina Kucika   +3 more
doaj   +1 more source

Identification of ocular refraction based on deep learning algorithm as a novel retinoscopy method

open access: yesBioMedical Engineering OnLine, 2022
Background The evaluation of refraction is indispensable in ophthalmic clinics, generally requiring a refractor or retinoscopy under cycloplegia. Retinal fundus photographs (RFPs) supply a wealth of information related to the human eye and might provide ...
Haohan Zou   +15 more
doaj   +1 more source

Comparison of keratometric measurements between color light-emitting diode topography and Scheimpflug camera

open access: yesBMC Ophthalmology, 2019
Background To determine the agreement of measurements between color light-emitting diode corneal topography (Cassini) and Scheimpflug camera keratometry (Pentacam HR).
Xian-Hua Cui   +3 more
doaj   +1 more source

Impact of growth parameters on refraction and ocular biometry in Chinese preschool children (3-6 years): the Beijing children eye study. [PDF]

open access: yesFront Pediatr
BackgroundThis study aims to investigate the relationship between growth and ocular biometry/refraction in preschool children aged 3–6 years.MethodsThis study performed a retrospective evaluation utilizing anonymized data from a pre-existing cohort of ...
Wang C, Yuan J, Xu Q, Jiang A.
europepmc   +2 more sources

New Objective Refraction Metric Based on Sphere Fitting to the Wavefront

open access: yesJournal of Ophthalmology, 2017
Purpose. To develop an objective refraction formula based on the ocular wavefront error (WFE) expressed in terms of Zernike coefficients and pupil radius, which would be an accurate predictor of subjective spherical equivalent (SE) for different pupil ...
Mateusz Jaskulski   +2 more
doaj   +1 more source

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