Results 11 to 20 of about 470 (166)
Image Analysis of Eccentric Photorefraction
Acta Polytechnica, 2004 This article deals with image and data analysis of the recorded video-sequences of strabistic infants. It describes a unique noninvasive measuring system based on two measuring methods (position of I.
J. Dušek, M. Dostálek
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Recent Advances in the Photorefraction of Doped Lithium Niobate Crystals
Materials, 2012 The recent advances in the photorefraction of doped lithium niobate crystals are reviewed. Materials have always been the main obstacle for commercial applications of photorefractive holographic storage.
Yongfa Kong, Jingjun Xu, Kong Yongfa
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An evaluation of the lag of accommodation using photorefraction
Vision Research, 2003 Objective. The lag of accommodation which occurs in most human subjects during reading has been proposed to explain the association between reading and myopia.
Anne Seidemann, Frank Schaeffel
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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
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Vision screening and photorefraction — The relation of refractive errors to strabismus and amblyopia
Behavioural Brain Research, 1983 Isotropic photorefraction is a technique well suited for screening infants and young children for refractive errors. The photorefractive measurements have been empirically calibrated against retinoscopic refractions, so errors exceeding selected criteria
Janette Atkinson, Oliver Braddick
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NanophotonicsThin-film lithium tantalate (TFLT) has recently emerged as a promising photonic platform for chip-scale nonlinear optics due to its weaker photorefraction, higher optical damage threshold, broader transparency window, and lower birefringence compared to ...
Yu Simin +7 more
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THE USE OF ISOTROPIC PHOTOREFRACTION FOR VISION SCREENING IN INFANTS
Acta Ophthalmologica, 1983 Isotropic photorefraction is a technique which makes possible the rapid, economic, large scale screening of infants and young children for refractive errors.
Janette Atkinson, Oliver Braddick
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Is Noncycloplegic Photorefraction Applicable for Screening Refractive Amblyopia Risk Factors?
Journal of Ophthalmic & Vision Research, 2012 Purpose: To compare the accuracy of noncycloplegic photorefraction (NCP) with that of cycloplegic refraction (CR) for detecting refractive amblyopia risk factors (RARFs) and to determine cutoff points.
Zhale Rajavi +3 more
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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 +2 more
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