Results 21 to 30 of about 533 (174)

Comparing School‐Aged Refraction Measurements Using the 2WIN‐S Portable Refractor in Relation to Cycloplegic Retinoscopy: A Cross‐Sectional Study

Journal of Ophthalmology, Volume 2021, Issue 1, 2021., 2021
Purpose. To assess the repeatability and agreement of refractive measurements using 2WIN‐S photoscreening with the gold‐standard cycloplegic retinoscope refraction. Design. Single centre, cross‐sectional study. Methods. Spherical, cylindrical, axis, and spherical equivalent of 194 bilateral eyes of 97 children were assessed using a retinoscope and 2WIN‐
Ziming Liu, Emmanuel Eric Pazo, Hong Ye, Cui Yu, Ling Xu, Wei He, Norberto López-Gil   +6 more
wiley   +1 more source

Research of photorefractive properties in lithium niobate crystals by raman and photoinduced light scatering [PDF]

Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2017
In Raman spectra of LiNbO3 crystals with photorefractive response in Y(ZX)Y scattering geometry a significant widening was detected of the band with frequency 630 cm-1 4A1(TO) that corresponds to totally symmetrical vibrations of oxygen octahedra.
N.V. Sidorov, N.A. Teplyakova, M.N. Palatnikov   +2 more
doaj   +1 more source

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   +1 more source

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   +1 more source

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   +1 more source

Floppy iris syndrome with oral imipramine: A case series

Indian Journal of Ophthalmology, 2012
Intraoperative floppy iris syndrome (IFIS) has commonly been seen with long-term use of α1-adrenoceptor blocking agents. We observed IFIS in three patients during phacoemulsification due to oral imipramine therapy.
Arvind Gupta, Renuka Srinivasan
doaj   +1 more source

Some Optical Properties of LiNbO₃:Gd³⁺(0.003):Mg²⁺(0.65 wt %) Single Crystal: A Promising Material for Laser Radiation Conversion

Photonics, 2023
A nonlinear optical double-doped single-crystal LiNbO3:Gd:Mg (Gd concentration is 0.003, Mg—0.65 wt % in the crystal) has been researched by several optical methods: laser conoscopy, photoinduced light scattering (PILS), optical spectroscopy, and Raman ...
Nikolay Sidorov, Mikhail Palatnikov, Natalya Teplyakova, Alexander Pyatyshev, Alexander Skrabatun   +4 more
doaj   +1 more source

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   +1 more source

Sphingosine-1 phosphate prevents ethanol-induced corneal epithelial apoptosis

Indian Journal of Ophthalmology, 2012
Background: Apoptosis is a programmed cell death in multicellular organisms, found in a wide variety of conditions, including inflammatory process, everywhere in the body, including the cornea and conjunctiva. Aim: To evaluate the effect of a new topical
Pierre Fournie, Stéphane Galiacy, Marie-Laure Ranty, Isabelle Rico-Lattes, François Malecaze, Jean-Claude Quintyn   +5 more
doaj   +1 more source

A truly knotless technique for scleral fixation of intraocular lenses: Two-year results

Indian Journal of Ophthalmology, 2012
Scleral fixated intraocular lens (SFIOL) is a safe and effective option for managing optical aphakia. Suture related complications like suture erosion, suture breakage, endophthalmitis, etc. are unique to SFIOL.
Naresh K Yadav, Vasudha Kemmanu, Mayuri Bhargava, Bhujanga Shetty   +3 more
doaj   +1 more source