Results 31 to 40 of about 6,799 (200)

Effects of Vision Health Education and Free Eyeglasses on Knowledge of Vision and Usage of Spectacles Among Primary School Students: Evidence from Gansu and Shaanxi Provinces in China

open access: yesRisk Management and Healthcare Policy, 2021
Yunyun Zhang,1 Hongyu Guan,1 Kang Du,1 Jin Zhao,1 Yaojiang Shi,1 Huan Wang,1 Decai Wang2 1Center for Experimental Economics in Education, Shaanxi Normal University, Xi’an, People’s Republic of China; 2Zhongshan Ophthalmic Center, State Key ...
Zhang Y   +6 more
doaj  

Ultrasonic Sound Guide System with Eyeglass Device for the Visually Impaired

open access: yesSensors, 2022
The ultrasonic sound guide system presents the audio broadcasting system based on the inaudible ultrasonic sound to assist the indoor and outdoor navigation of the visually impaired.
Kevin Kim, Saea Kim, Anthony Choi
doaj   +1 more source

An Explainable Attention Zone Estimation for Level 3 Autonomous Driving

open access: yesIEEE Access, 2023
Accurately assessing the driver’s situational awareness is crucial in level 3 ( $L_{3}$ ) autonomous driving, where the driver is in the loop.
Roksana Yahyaabadi, Soodeh Nikan
doaj   +1 more source

Early Prints Depicting Eyeglasses [PDF]

open access: yesArchives of Ophthalmology, 2002
Much of the history of eyeglasses has been gleaned from studies of paintings and prints that illustrate them. A few prints from the first century of printing include spectacles and are reproduced in this article. In addition to showing their form and method of use, these prints also illustrate their symbolic value.
John Dreyfus, Charles E. Letocha
openaire   +2 more sources

Safety of eyeglasses wear for visual acuity among middle school students in northwestern rural China: a cluster-randomised controlled trial

open access: yesBMJ Open Ophthalmology, 2020
Objective To assess the effect of free eyeglasses provision on visual acuity among middle school students in northwestern rural China.Methods and analysis Among 31 middle schools randomly selected from 47 middle schools in northwestern rural China ...
Nathan Congdon   +8 more
doaj   +1 more source

The Perception of Spectacles Use Among the General Population in Ha’il Region, Saudi Arabia: A Cross-Sectional Study

open access: yesClinical Ophthalmology, 2023
Nawaf Osaywid Alrashidi,1 Wafy Abdulrahman Albrak,1 Shaker Osaywid Alreshidi,2 Lama Abdulrahman Alaradi,3 Hatim Adam Nagi Adam,3 Naif Mamdouh Alali,4 Faris Hashem,4 Hani Basher Albalawi,4 Ahmed Yousef Alothman,5 Shaima Sulaiman Alharbi2 1College of ...
Alrashidi NO   +9 more
doaj  

A Brief History of Early Silica Glass: Impact on Science and Society

open access: yesSubstantia, 2019
Silicon in the form of silica is the basis of common glass and its uses predate recorded history. The production of synthetic glass, however, is thought to date back to no earlier than 3000 BCE.
Seth C Rasmussen
doaj   +1 more source

Advanced cancer patients in a randomized clinical trial of night-simulating eyeglasses observed to have a normal 24-h circadian rhythm during chemotherapy

open access: yesSAGE Open Medicine, 2022
Objectives: Cancer patients routinely exhibit dysfunctional circadian organization. Indeed, a dysfunctional circadian organization is a hallmark of advanced cancer. A cohort of advanced cancer patients undergoing chemotherapy was recruited to investigate
Keith I Block   +9 more
doaj   +1 more source

A large-scale analysis of refractive errors in students attending public primary schools in Mexico

open access: yesScientific Reports, 2023
A cross-sectional, retrospective study was conducted from September 2013 through July 2014 to determine the prevalence of refractive errors among students attending public primary schools in Mexico.
Marco Antonio Ramírez-Ortiz   +8 more
doaj   +1 more source

Eyeglass allergic contact dermatitis [PDF]

open access: yesContact Dermatitis, 1998
A literature review is presented of allergic contact dermatitis from eyeglasses. Causes are grouped into metals, plastics, plasticizers, solvents, UV stabilizers, antioxidants, dyes, and waxes. Plasticizers and UV stabilizers are currently the most common allergens.
Howard I. Maibach, Tokio Nakada
openaire   +3 more sources

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