Results 101 to 110 of about 697,490 (331)

Changes in ocular biometrics and refraction during near work in downward gaze over time

, 2013
PURPOSE\ud \ud To investigate changes in the characteristics of the corneal optics, total optics, anterior biometrics and axial length of the eye during a near task, in downward gaze, over 10 min. \ud \ud METHODS\ud \ud Ten emmetropes (mean - 0.14 ± 0.24
Chatterjee, Payel, Read, Scott A., Ghosh, Atanu, Yi, Fan, Davis, Brett A., Collins, Michael J.   +5 more
core  

GABAA and GABAC (GABAA0r) receptors affect ocular growth and form-deprivation myopia

, 2005
Roles of γ-aminobutyric acid (GABA) antagonists on the chick model of form-deprivation myopia (FDM) were investigated. Bicuculline (GABA ) or TPMPA (GABA ) was injected intravitreally (1 or 10 mg/mL) into the right eyes of chicks with or without FDM for ...
Leung, C. K.S., Lam, D. S.C., Yeung, Chi Kong, Chan, K. P., Chiang, S. W.Y., Pang, C. P.   +5 more
core   +1 more source

Dye‐Initiated Chirped Cholesteric Polymer Networks Exhibiting Broadband Dissipative Chiral Photonic Bands

Advanced Functional Materials, EarlyView.
A dye‐based photoinitiator acting as a structure‐directing element, guides the formation of a cholesteric polymer network that behaves as a chirped photonic structure with dissipative chiral coupling. Photopolymerization freezes a depth‐dependent helical pitch, broadening the Bragg resonance spectrum.
Alfredo Mazzulla, Pasquale Pagliusi, Gabriella Cipparrone   +2 more
wiley   +1 more source

Prevalence and Pattern of Ocular Morbidities among Pediatric Patients Attending Tertiary Eye Hospital in Nepal: A Descriptive Cross-Sectional Study

Journal of Nepal Medical Association
Introduction: A hospital based cross-sectional study was conducted to determine the prevalence and pattern of ocular morbidities among pediatric patients attending a tertiary eye hospital in Nepal.
Raju Kaiti, Monika Mandal, Ranjila Shyangbo, Aayusha Regmi, Chandra Maya Gurung, Santosh Paudel   +5 more
doaj   +1 more source

Ocular Morbidity among Orphanages

Journal of Nepal Medical Association, 2010
INTRODUCTION: The study assesses the spectrum of ocular morbidity and predictors of morbidity in children living in orphanages in the Kathmandu Valley.
M K Shrestha, L Wolf, U Shrestha, K Gurung, B S Chansi, P Dhungana, R Gurung, S Ruit   +7 more
doaj   +1 more source

Janus Photonic Graphics by Stratified Assembly of Two Distinct Colloids

Advanced Functional Materials, EarlyView.
Double‐sided Janus photonic micropatterns with vivid structural colors are fabricated through a single‐step bottom‐up strategy. Density‐driven stratification and depletion‐mediated crystallization of PMMA and PS binary colloids lead to exclusive lattices on opposite surfaces under centrifugal force.
Young Geon Kim, Yongseok Jung, Sehee Yang, Jiwoo Lee, Shin‐Hyun Kim   +4 more
wiley   +1 more source

Efecto de la queratotomía hexagonal sobre la acomodación en hipermetropías primarias Effect of hexagonal keratotomy on accomodation in primary hypermetropies

Revista Cubana de Oftalmología, 2000
Se realiza un estudio prospectivo en 71 ojos operados, de 44 pacientes en edad no présbita, con hipermetropía primaria realizando la técnica de queratotomía hexagonal, con el fin de analizar el comportamiento de la amplitud de acomodación, medida con el ...
José Alberto Cortés Amador, Enrique J. Machado Fernández, María del C. Benítez Merino, Yamila Díaz Parra, Jorge L. Iglesias   +4 more
doaj  

Twin Crystal Moiré Metasurfaces for Crossing Flat‐Band Transport

Advanced Functional Materials, EarlyView.
This study introduces twin crystal moiré metasurfaces, breaking in‐plane symmetry to enable reconfigurable acoustic wave manipulation. By adjusting the twin angle and interlayer twist angle, various combinations of hyperbolic, flat bands, and elliptic states can be synthesized in the system.
Shida Fan, Chenglin Han, Kuan He, Chadi Ellouzi, Yunlong Wang, Li‐Qun Chen, Jie Sun, Zhaodong Xu, Chen Shen, Tianzhi Yang   +9 more
wiley   +1 more source

Comparison Between Aberrometry-Based Binocular Refraction and Subjective Refraction

, 2018
Received: 10 April 2018; Accepted: 13 June 2018; Published: 3 August 2018Purpose: We evaluate the efficacy of a new system of binocular refraction, mainly based on ocular aberrometry (EYER) and compare it with the traditional subjective refraction as ...
Batres Valderas, Laura, Carracedo Rodríguez, Juan Gonzalo, Serramito Blanco, María, Carpena Torres, Carlos   +3 more
core   +1 more source

Human eye ocular component analysis for refractive state and refractive surgery

International Journal of Ophthalmology, 2017
To analyze the clinical factors influencing the human vision corrections via the changing of ocular components of human eye in various applications; and to analyze refractive state via a new effective axial length.An effective eye model was introduced by the ocular components of human eye including refractive indexes, surface radius (r1, r2, R1, R2 ...
Chao-Kai Chang, Jui-Teng Lin, Yong Zhang
openaire   +3 more sources