Results 31 to 40 of about 1,111,930 (322)

Vision measurement and psychophysical tests [PDF]

open access: yes, 2008
Vision measurement is the basis for the study and standardization of visual sciences. Measurement of visual acuity has great value for research and for clinical practice.
Carvalho, Luis Alberto Vieira De   +2 more
core   +2 more sources

ACQUIRED COLOR VISION DEFICIENCY IN PARKINSON’S DISEASE [PDF]

open access: yesActa Medica Iranica, 2003
Acquired color deficiency in the tritan axis in Parkinson’s disease has already been reported, manifesting itself as impaired performance in various visual tasks. However, its clinical significance has always been controversial.
S.A. Tabassi, S.G. Sepanlou J. Lotfi
doaj   +2 more sources

Color vision in civil aviation

open access: yesIndian Journal of Ophthalmology, 2021
Color vision deficiency (CVD) is a condition that results in individuals being unable to distinguish differences between certain colors. Occupational color vision standards were introduced in aviation in 1919 by The Aeronautical Commission of the ...
Atul K Singh   +3 more
doaj   +1 more source

Printing of wirelessly rechargeable solid-state supercapacitors for soft, smart contact lenses with continuous operations [PDF]

open access: yes, 2019
Recent advances in smart contact lenses are essential to the realization of medical applications and vision imaging for augmented reality through wireless communication systems.
Ahn, David B.   +6 more
core   +2 more sources

Role of improved distance and near visual acuity with low vision aids to enhance stereopsis in retinal diseases

open access: yesIndian Journal of Ophthalmology, 2021
Purpose: The purpose of this study was to examine role of improved distance and near best-corrected visual acuity (DBCVA and NBCVA) with use of magnification devices to enhance stereopsis in low vision (LV) subjects having retinal diseases. Methods: In a
Punita Kumari Sodhi   +4 more
doaj   +1 more source

Multispectral Analysis of Color Vision Deficiency Tests

open access: yesMedžiagotyra, 2011
Color deficiency tests are usually produced by means of polygraphy technologies and help to diagnose the type and severity of the color deficiencies. Due to different factors, as lighting conditions or age of the test, standard characteristics of these ...
Sergejs FOMINS, Maris OZOLINSH
doaj   +1 more source

Early forest fire detection by vision-enabled wireless sensor networks [PDF]

open access: yes, 2012
Wireless sensor networks constitute a powerful technology particularly suitable for environmental monitoring. With regard to wildfires, they enable low-cost fine-grained surveillance of hazardous locations like wildland-urban interfaces.
Carmona Galán, Ricardo   +3 more
core   +1 more source

Uncertainty and accuracy of vision-based tracking concerning stereophotogrammetry and noise-floor tests [PDF]

open access: yesMetrology and Measurement Systems, 2022
This work proposes a systematic assessment of stereophotogrammetry and noise-floor tests to characterize and quantify the uncertainty and accuracy of a vision-based tracking system.
Luna Ngeljaratan, Mohamed A. Moustafa
doaj   +1 more source

Color space distortions in patients with type 2 diabetes mellitus [PDF]

open access: yes, 2006
Color vision impairment was examined in patients with type 2 diabetes mellitus (DM2) without retinopathy. We assessed the type and degree of distortions of individual color spaces. DM2 patients (n = 32), and age-matched controls (n = 20)were tested using
Bimler, David L.   +7 more
core   +1 more source

Clinical validation of a cross-platform digital visual acuity measurement system [PDF]

open access: yesRevista Brasileira de Oftalmologia
Objective: To validate visual acuity measurements using a cross-platform system in an ophthalmological setting. Methods: Visual acuity was assessed at a distance of 5m using two different modalities: printed and digital optotypes.
Juan Carlos Costa   +2 more
doaj   +1 more source

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