Results 21 to 30 of about 189,401 (272)

Prevalence and Burden of Refractive Errors at National and Sub-national Levels in Iran

Journal of Ophthalmic & Vision Research, 2022
Purpose: To estimate the prevalence, burden of refractive errors and their associated trend from 1990 to 2018 and geographic inequalities in Iran. Methods: Data regarding the epidemiology of refractive errors was extracted from three different sources ...
Seyed Mohammadi, Farshad Farzadfar, Parinaz Mehdi Pour, Elham Ashrafi, Alireza Lashay, Bahram Mohajer, Mohsen Asadi Lari   +6 more
doaj   +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

Does Long-Term Night Shift Work Cause Dry Eye in Hospital Nurses?

Journal of Ophthalmic & Vision Research, 2023
Purpose: To determine the long-term effects of night shift work on dry eye in hospital nurses. Methods: Each participant was evaluated four times, including at the beginning of the day shift (8 am), at the end of the day shift (2 pm), at the beginning of
Aria Bouyeh, Hassan Hashemi, Yousef Alizadeh, Ebrahim Jafarzadehpur, Ali Mirzajani, Hadi Ostadimoghaddam, Abbasali Yekta, Abolfazl Jafarzadehpour, Arghavan Zarei, Mehdi Khabazkhoob   +9 more
doaj   +1 more source

Refractive errors among commercial drivers

Indian Journal of Ophthalmology, 2022
Purpose: To determine the pattern of refractive error among commercial drivers in north India. Methods: Descriptive study with convenient sampling conducted among commercial drivers of north India. Results: A total of 213 (75.8%) heavy-vehicle and 68 (24.
Mukesh Kumar, Aarti Mahaseth, Shafia Parveen, Uzma Rafeeq, Lokesh Chauhan   +4 more
doaj   +1 more source

Analytic evaluation of diffuse fluence error in multi-layer scattering media with discontinuous refractive index [PDF]

, 2011
A simple analytic method of estimating the error involved in using an approximate boundary condition for diffuse radiation in two adjoining scattering media with differing refractive index is presented. The method is based on asymptotic planar fluences and enables the relative error to be readily evaluated without recourse to Monte Carlo simulation ...
arxiv   +1 more source

Repeatability and Agreement of Anterion with Pentacam HR and Orbscan II in Corneal Parameters after Photorefractive Keratectomy

Dubai Medical Journal
Introduction: This study aimed to evaluate the repeatability and agreement of Anterion with Pentacam HR and Orbscan II in corneal parameters after photorefractive keratectomy (PRK).
Hadi Ostadi-Moghaddam, Javad Heravian Shandiz, Mohammad Hosein Validad, Monireh Mahjoob, Abbas Ali Yekta, Sadegh Basharaf, Tahereh Rakhshandadi   +6 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

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  

Impact of bulk density assignment of bone on MRI‐based abdominal region radiotherapy planning for MR‐linac workflow

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose The purpose of the present study was to evaluate the impact of bone relative electron density (rED) assignment on radiotherapy planning for the abdominal region. Methods Twenty patients who received abdominal radiotherapy using MR‐Linac and underwent magnetic resonance imaging (MRI) and computed tomography (CT) simulation were analyzed.
Kota Abe, Masato Tsuneda, Yukio Fujita, Yukinao Abe, Takashi Uno   +4 more
wiley   +1 more source

Eye problems in children with hearing impairment

Journal of Current Ophthalmology, 2015
Purpose: To compare the prevalence of refractive errors, amblyopia, and strabismus between hearing-impaired and normal children (7–22 years old) in Mashhad.
Hadi Ostadimoghaddam, Hanieh Mirhajian, AbbasAli Yekta, Davood Sobhani Rad, Javad Heravian, Azam Malekifar, Mehdi Khabazkhoob   +6 more
doaj   +1 more source