Results 71 to 80 of about 2,414 (173)
Ophthalmic and Physiological Optics, Volume 39, Issue 4, Page 253-259, July 2019., 2019 Abstract Purpose The PowerRef 3 is frequently used in studying the near triad of accommodation, vergence and pupil responses in normal and clinical populations. Within a range, the defocus measurement of the PowerRef 3 is linearly related to the eye's defocus. While the default factory‐calibrated slope of this relation (calibration factor) is 1, it has
Saeideh Ghahghaei +3 more
wiley +1 more source
Indian Journal of Ophthalmology, 2012 We report a patient with gyrate atrophy, a rare metabolic disease, who had bilateral late spontaneous posterior dislocation of in-the-bag posterior chamber intraocular lens (PCIOL). He underwent pars plana vitrectomy, PCIOL retrieval and anterior chamber
Michael Kinori +2 more
doaj +1 more source
Optical limiting using Laguerre-Gaussian beams
, 2007 We demonstrate optical limiting using the self-lensing effect of a higher-order Laguerre-Gaussian beam in a thin dye-doped polymer sample, which we find is consistent with our model using Gaussian decomposition.
Chen, Fang +9 more
core +1 more source
CrystalsA series of lithium niobate crystals co-doped with uranium and indium was successfully grown by the modified vertical Bridgman method for the first time.
Tian Tian +7 more
semanticscholar +1 more source
Nonlinear dynamics of two-color optical vortices in lithium niobate crystals
, 2015 We study experimentally the nonlinear dynamics of two-color optical vortex beams in the presence of second-harmonic generation combined with the effects of photo- and thermal refraction, as well as self- and induced-phase modulation.We use an iron ...
Dreischuh, Alexander +6 more
core +1 more source
Synaptic Function in Memristor Devices for Neuromorphic Circuit Applications
Advanced Electronic Materials, Volume 11, Issue 14, September 4, 2025.Discover how neuromorphic devices mimic brain‐like learning: this article explores how ionic and electronic conduction processes enable artificial synapses to adapt across time scales. Uncover the essential ingredients—state‐variable dynamics, rectification, and memory—and how they can be probed through nonlinear diagnostics to engineer smarter, more ...
Juan Bisquert +3 more
wiley +1 more source
Short-term outcome of Boston Type 1 keratoprosthesis for bilateral limbal stem cell deficiency
Indian Journal of Ophthalmology, 2012 This study reports the short-term functional and anatomical outcome of Boston Type 1 keratoprosthesis (Boston Kpro) implantation for bilateral limbal stem cell deficiency (LCSD).
Sayan Basu +4 more
doaj +1 more source
Pattern-Related Visual Stress, Chromaticity, and Accommodation [PDF]
, 2010 PURPOSE. To investigate the impact of colored overlays on the accommodative response of individuals, with and without pattern- related visual stress (PRVS), a condition in which individuals manifest symptoms of perceptual distortion and discomfort when ...
Allen, Peter M +3 more
core +1 more source
Optical properties of double doped LiNbO3:Gd:Mg crystals
Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2023 By direct alloying of congruent melt with magnesium and gadolinium oxides, compositionally uniform nonlinear optical single double doped crystals with different content of dopants have been grown: LiNbO3:Gd3+(0,003):Mg2+(0,65 wt.
N.A. Teplyakova +2 more
doaj +1 more source
Ophthalmic and Physiological Optics, Volume 45, Issue 5, Page 1080-1089, July 2025.Abstract Purpose Early detection of myopia is essential to delay its onset and progression. Pre‐myopia, defined by an inadequate hyperopic reserve, increases myopia risk in childhood. However, effective screening methods remain limited. This study aimed to develop practical non‐cycloplegic screening methods for pre‐myopia and myopia in 6‐ to 7‐year ...
Síofra Harrington +4 more
wiley +1 more source