Results 51 to 60 of about 342,349 (349)

Refractive error sensing from wavefront slopes [PDF]

, 1998
15 páginas, 8 figuras, 2 tablas.The problem of measuring the objective refractive error with an aberrometer has shown to be more elusive than expected.
Jaeschke, C., Niethard, Fritz Uwe, Weber, M., Wirtz, D.   +3 more
core   +1 more source

Deep learning for predicting refractive error from retinal fundus images [PDF]

Investigative Ophthalmology & Visual Science (2018), 2017
Refractive error, one of the leading cause of visual impairment, can be corrected by simple interventions like prescribing eyeglasses. We trained a deep learning algorithm to predict refractive error from the fundus photographs from participants in the UK Biobank cohort, which were 45 degree field of view images and the AREDS clinical trial, which ...
arxiv   +1 more source

Hybrid refractive holographic single vision spectacle lenses

Journal of the European Optical Society-Rapid Publications, 2019
In this contribution, we investigate hybrid single vision spectacle lenses (SVSLs) consisting of holographic optical elements (HOEs) embedded into a refractive lens.
Jannik M. Trapp, Toufic G. Jabbour, Gerhard Kelch, Thomas Pertsch, Manuel Decker   +4 more
doaj   +1 more source

Refractive errors among children, adolescents and adults attending eye clinics in Mexico [PDF]

International Journal of Ophthalmology, 2017
AIM: To assess the proportion of refractive errors in the Mexican population that visited primary care optometry clinics in fourteen states of Mexico. METHODS: Refractive data from 676 856 patients aged 6 to 90y were collected from optometry clinics in ...
Francisco Gomez-Salazar, Abraham Campos-Romero, Humberto Gomez-Campaña, Cinthia Cruz-Zamudio, Mariano Chaidez-Felix, Nidia Leon-Sicairos, Jorge Velazquez-Roman, Hector Flores-Villaseñor, Secundino Muro-Amador, Alma Marlene Guadron-Llanos, Javier J. Martinez-Garcia, Joel Murillo-Llanes, Jaime Sanchez-Cuen, Alejando Llausas-Vargas, Gerardo Alapizco-Castro, Ana Irineo-Cabrales, Enrique Graue-Hernandez   +16 more
doaj   +1 more source

Targeting the MDM2‐MDM4 interaction interface reveals an otherwise therapeutically active wild‐type p53 in colorectal cancer

Molecular Oncology, EarlyView.
This study investigates an alternative approach to reactivating the oncosuppressor p53 in cancer. A short peptide targeting the association of the two p53 inhibitors, MDM2 and MDM4, induces an otherwise therapeutically active p53 with unique features that promote cell death and potentially reduce toxicity towards proliferating nontumor cells.
Sonia Valentini, Giada Mele, Marika Attili, Maria Rita Assenza, Fulvio Saccoccia, Francesca Sardina, Cinzia Rinaldo, Roberto Massari, Nicola Tirelli, Alfredo Pontecorvi, Fabiola Moretti   +10 more
wiley   +1 more source

Construction of hyperthermostable d‐allulose 3‐epimerase from Arthrobacter globiformis M30 using the sequence information from Arthrobacter psychrolactophilus

FEBS Open Bio, EarlyView.
d‐Allulose can be produced from d‐fructose by d‐allulose 3‐epimerase. Based on sequence homology information, we successfully engineered thermostable mutants with the protein engineering method. By integrating positive mutations, we constructed an enzyme that exhibits hyperthermostability without a loss in the activity.
Kensaku Shimada, Kouhei Ohtani, Pushpa Kiran Gullapalli, Kazuhiko Ishikawa   +3 more
wiley   +1 more source

Prevalence and associated factors of refractive error among adults in South Ethiopia, a community-based cross-sectional study.

PLoS ONE
IntroductionThe increasing prevalence of refractive error has become a serious health issue that needs serious attention. However, there are few studies regarding the prevalence and associated factors of refractive error at the community level in ...
Marshet Gete Abebe, Abiy Maru Alemayehu, Minychil Bantihun Munaw, Mikias Mered Tilahun, Henok Biruk Alemayehu   +4 more
doaj   +1 more source

Refractive Error Among School Going Children in Solukhumbu, Nepal

Nepalese Medical Journal, 2020
Introduction: Reduced vision among school-going children is a global public health problem and uncorrected refractive error, the main causative factor is most prevalent in under-developed countries.
Ang Tshering Lama Sherpa, Mingmar Gyalzen Sherpa, Pushpa Babu Basnet, Mingmar Chhiring Sherpa   +3 more
doaj   +1 more source

Development and Validation of a Screening Tool for The Identification of Refractive Errors Among School Going Children In Tamil Nadu, India

National Journal of Community Medicine, 2023
Background: The inability to focus light onto the retina, known as refractive error, is a significant cause of correctable visual impairment. Unfortunately, students' ocular complaints often go unnoticed due to a lack of awareness. To address this issue,
Sudharsan V, Prateeksha Dawn Davidson, Lakshmi Kandhan V, Amudha VP, Rita Hepsi Rani M   +4 more
doaj   +1 more source

Precise Measurement of Refractive Indices in Thin Film Heterostructures [PDF]

arXiv, 2023
We present a robust, precise, and accurate method to simultaneously measure the refractive indices of two transparent materials within an interference coating. This is achieved by measuring both a photometrically accurate transmittance spectrum and the as-grown individual layer thicknesses of a thin-film multilayer structure.
arxiv