Results 11 to 20 of about 2,414 (173)

Comparison of photorefraction by photoscreener (PlusoptiXA12R) with autorefractometer and cycloplegic retinoscopy in children between 5 and 15 years

Journal of Clinical Ophthalmology and Research, 2021
Aim: The aim of the study is to compare the photorefraction values by photoscreener (PlusoptiXA12R, PO) with those of autorefractometer (AR) (TOPCON RM800) and cycloplegic retinoscopy (CR) in children.
S. Kripa, V Rajesh Prabu, H Ranjini, Parul Priyambada, Venu Muralidhar   +4 more
doaj   +2 more sources

Comparison of Autorefraction and Photorefraction with and without Cycloplegia Using 1% Tropicamide in Preschool Children

Journal of Ophthalmology, 2019
Purpose. We aimed to investigate whether the accuracy of the Plusoptix A09 photorefractor in children with ametropia is enhanced by cycloplegia with 1% tropicamide. Methods. A total of 70 eyes (70 children) were retrospectively reviewed.
Ertuğrul Tan Yassa, Cihan Ünlü
doaj   +2 more sources

Tribal Odisha Eye Disease Study # 4: Accuracy and utility of photorefraction for refractive error correction in tribal Odisha (India) school screening

Indian Journal of Ophthalmology, 2018
Purpose: To compare the photorefraction system (Welch Allyn Spot™) performance with subjective refraction in school sight program in one Odisha (India) tribal district.
Sandeep Reddy, Lapam Panda, Anjul Kumar, Suryasmita Nayak, Taraprasad Das   +4 more
doaj   +2 more sources

Deep Learning–Based Prediction of Refractive Error Using Photorefraction Images Captured by a Smartphone: Model Development and Validation Study

JMIR Medical Informatics, 2020
BackgroundAccurately predicting refractive error in children is crucial for detecting amblyopia, which can lead to permanent visual impairment, but is potentially curable if detected early.
Chun, Jaehyeong, Kim, Youngjun, Shin, Kyoung Yoon, Han, Sun Hyup, Oh, Sei Yeul, Chung, Tae-Young, Park, Kyung-Ah, Lim, Dong Hui   +7 more
doaj   +2 more sources

Photorefraction vision screening: value, constancy and credibility

Journal of the Egyptian Ophthalmological Society, 2019
Background The purpose of this study was to compare photorefraction using Plusoptix vision screening with that of standard cycloplegic refraction, to detect variability between different observers.
Ahmed F Gabr, Mohamed A Nassef, Shaimaa S Soliman   +2 more
doaj   +2 more sources

Optimization of Blue Photorefractive Properties and Exponential Gain of Photorefraction in Sc-Doped Ru:Fe:LiNbO₃ Crystals

Crystals, 2022
Sc:Ru:Fe:LiNbO3 crystals were grown from congruent melt by using the Czochralski method. A series of LiNbO3 crystals (Li/Nb = 48.6/51.4) with 0.1 wt% RuO2, 0.06 wt% Fe2O3 and various concentrations of Sc203 were prepared.
Lei Xu, Guanying Chen
doaj   +2 more sources

Comparison of non-cycloplegic photorefraction, cycloplegic photorefraction and cycloplegic retinoscopy in children

International Journal of Ophthalmology, 2015
AIM: To compare the results of noncycloplegic photorefraction, cycloplegic photorefraction and cycloplegic refraction in preschool and non-verbal children.
Ozdemir Ozdemir, Zuhal Özen Tunay, Ikbal Seza Petriçli, Damla Ergintürk Acar, Zuhal Özen Tunay   +4 more
doaj   +2 more sources

Early Detection of Refractive Errors by Photorefraction at School Age. [PDF]

Int J Environ Res Public Health, 2022
Early detection and treatment of refractive defects during school age are essential to avoid irreversible future vision loss and potential school problems. Previously, vision screening of preschool children used methods based on subjective visual acuity;
Alvarez M, Benedi-Garcia C, Concepcion-Grande P, Dotor P, Gonzalez A, Chamorro E, Cleva JM.   +6 more
europepmc   +2 more sources

Deep learning-empowered low-cost portable automated refraction system: A solution to the inadequate effective correction rate of refractive errors in resource-limited areas. [PDF]

Ophthalmic Physiol Opt
Abstract Aims To develop and validate a low‐cost, portable automated refraction system (Tongren Digital Sight, TRDS) using deep learning and infrared eccentric photorefraction to improve refractive error correction in resource‐constrained settings. Methods This randomised controlled crossover trial enrolled 282 participants (18–60 years of age) at ...
Yan H, Yi Z, Qilin S, Hong C, Yan H, Wei T.   +5 more
europepmc   +2 more sources

Photorefraction with Spot Vision Screener versus Visual Acuity Testing as Community-Based Preschool Vision Screening at the Age of 3.5 Years in Japan. [PDF]

Int J Environ Res Public Health, 2022
Nationwide in Japan, a community-based vision-screening program in 3.5-year-old children is conducted in three steps: questionnaires and home visual acuity testing as the primary screening; visual acuity testing by nurses and pediatricians’ inspection in
Matsuo T, Matsuo C, Kayano M, Mitsufuji A, Satou C, Matsuoka H.   +5 more
europepmc   +2 more sources