Results 1 to 10 of about 486,387 (134)

Encircling Laser Prophylaxis for Retinal Detachment in Stickler Syndrome: The Impact on Visual Field [PDF]

open access: yesClinical Ophthalmology
Donald C Fletcher,1,2 Ronald A Schuchard,3 Robert E Morris,4 Ferenc Kuhn4,51Envision Low Vision Rehabilitation Center, Wichita, KS, USA; 2University of Kansas Medical Center, Department of Ophthalmology, KU Eye Center, Kansas City, KS, USA; 3Biotechnical
Fletcher DC   +3 more
doaj   +2 more sources

Understanding low vision [PDF]

open access: yesCommunity Eye Health Journal, 2012
Who is likely to have low vision and what low vision looks like.
Clare Gilbert
doaj   +2 more sources

Ophthalmologic approach to babies with cerebral visual impairment

open access: yesThe Turkish Journal of Pediatrics, 2021
Background. Cerebral visual impairment (CVI) is an increasingly common type of visual disturbance in infants and children. The increased incidence is associated with improved neonatal intensive care services and survival of premature infants ...
Şefay Aysun İdil   +7 more
doaj   +1 more source

Practical skills of persons with vision impairment [PDF]

open access: yesVojnosanitetski Pregled, 2023
Background/Aim. The acquisition of practical skills (PS), as well as adaptive behavior (AB) in general, is affected by an array of personal and environmental factors. The aim of this study was to determine the level of a c-quisition of practical adaptive
Anđelković Marija   +3 more
doaj   +1 more source

Numerical study of a near-infrared to mid-infrared perfect absorber based on tunable GaAs metamaterial

open access: yesAIP Advances, 2023
An infrared perfect absorber structure is designed based on GaAs/Au/SiO2 metamaterial with numerical simulation, in which gold split ring resonators (SRR) embedded in the GaAs layer.
Ruoyu Zhang   +9 more
doaj   +1 more source

Low-vision device [PDF]

open access: yesBritish Journal of Ophthalmology, 2006
Diffraction depends on the size, and limits the performance of an eye. As creatures become smaller, visual mechanisms become more challenging if sight is to be one of the primary sensory modalities, especially if the intended prey is yet smaller. Hence, a small creature risks sensory disability simply by being small, particularly if it is a predator ...
I R, Schwab, D-E, Nilsson
openaire   +2 more sources

Enhanced photoemission performance of an AlGaN photocathode by a superlattice emission layer

open access: yesAIP Advances, 2023
The AlGaN photocathode with a superlattice emission layer was grown by metal organic chemical vapor deposition. The existence of the superlattice structure was confirmed using a transmission electron microscope, and its optical and electrical properties ...
Jinjuan Du   +9 more
doaj   +1 more source

A Lightweight Approach to Localization for Blind and Visually Impaired Travelers

open access: yesSensors, 2023
Independent wayfinding is a major challenge for blind and visually impaired (BVI) travelers. Although GPS-based localization approaches enable the use of navigation smartphone apps that provide accessible turn-by-turn directions in outdoor settings, such
Ryan Crabb   +2 more
doaj   +1 more source

Self-help group for addressing depression and anxiety in the visually impaired. A Pilot Study

open access: yesMediterranean Journal of Clinical Psychology, 2021
Background: This work describes a vision rehabilitation approach integrated with a self-help group, for psychological support of visually impaired people. The effectiveness and benefits of attending self- help group was analyzed in accordance to anxiety,
Emanuela Rellini   +5 more
doaj   +1 more source

Study on degradation mechanism of equivalent background illumination in image intensifiers based on interface characteristics of p-GaAs materials [PDF]

open access: yesAIP Advances
Equivalent Background Illumination (EBI) is a core metric for evaluating the imaging quality and noise performance of low-light image intensifiers, whose degradation directly limits the operational stability and service life of devices. As the activation
Gangcheng Jiao   +8 more
doaj   +1 more source

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