Results 21 to 30 of about 151,109 (333)

Prevalence of color vision deficiency among primary school pupils in Duhok city, Kurdistan Region, Iraq

open access: yesAdvanced Medical Journal, 2022
Background and objectives: Color vision deficiency or color blindness is a difficulty in recognizing certain colors. The color vision deficient persons remain unmindful about their condition and only become aware accidentally when tested for color ...
Azad Jameel Hussein   +1 more
doaj   +2 more sources

Multispectral Analysis of Color Vision Deficiency Tests

open access: bronzeMedžiagotyra, 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   +3 more sources

Prevalence of color vision deficiency among school-going boys in South India [PDF]

open access: yesIndian Journal of Ophthalmology, 2021
Purpose: Impact of color vision deficiency (CVD) on activities at school and productivity at work and consequential psychosocial difficulties has been reported.
Sruthi Sree Krishnamurthy   +3 more
doaj   +2 more sources

A Novel Approach to Image Recoloring for Color Vision Deficiency [PDF]

open access: yesSensors, 2021
In this paper, a novel method to modify color images for the protanopia and deuteranopia color vision deficiencies is proposed. The method admits certain criteria, such as preserving image naturalness and color contrast enhancement.
George E. Tsekouras   +6 more
doaj   +2 more sources

Optimal Color Correction Based on Image Analysis for Color Vision Deficiency [PDF]

open access: goldIEEE Access, 2019
The primary goal of image color correction is to minimize color confusion for those people who experience deficiencies in their ability to distinguish certain colors.
Jongho Choi   +4 more
doaj   +2 more sources

Prevalence of color vision deficiency among arc welders [PDF]

open access: yesJournal of Optometry, 2017
Purpose: This study was performed to investigate whether occupationally related color vision deficiency can occur from welding. Methods: A total of 50 male welders, who had been working as welders for at least 4 years, were randomly selected as case ...
Samira Heydarian   +4 more
doaj   +2 more sources

Color vision deficiency

open access: yesمجله دانشگاه علوم پزشکی گرگان, 2016
Color vision deficiency (CVD) is a defect of vision with disability to distinguish colors. Color vision deficiency can be divided into the two categories, congenital and acquired.
M Mahjoob M   +2 more
doaj   +1 more source

Prevalence of color vision deficiency among school children in Wolkite, Southern Ethiopia [PDF]

open access: yesBMC Research Notes, 2018
Objective Colour vision deficiency is the commonest disorders of vision and undiagnosed colour vision defect could pose a handicap to the performance of an affected student.
Gashaw Garedew Woldeamanuel   +1 more
doaj   +2 more sources

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

open access: greenActa 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   +1 more
doaj   +3 more sources

Quantification and Standardized Description of Color Vision Deficiency Caused by Anomalous Trichromats—Part II: Modeling and Color Compensation

open access: goldEURASIP Journal on Image and Video Processing, 2008
A color compensation scheme has been developed to enhance the perception of people with color vision deficiency (CVD) and for people suffering from anomalous trichromacy.
Seungji Yang   +3 more
doaj   +2 more sources

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