Defective Color Perception Among Car Drivers in Addis Ababa, Ethiopia

Abebe, Yekoye; Wondmikun, Yared

doi:10.1080/15389580214622

Cited by 10 publications

(19 citation statements)

References 12 publications

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“…The overall prevalence of CCVD in the present study was lower compared to the previous studies such as in Addis Ababa (Ethiopia), 4.52%, by Abebe and Wondimkun [24], in Saudi Arabia, 3.36%, by Oriowo and Alotaibi [12], in Manipur (India), 5.28 %, by Shah et al [13], in Shekhan City/Kurdistan region (Iraq), 3.28%, by Abdulrahman [14], in Welkite town (central Ethiopia), 4.10%, by Woldeamanuel and Geta [15] but higher than a report in Bhopal (India), 2.50% by Gupta et al [16]. The lower prevalence of CCVD in the present study relative to other studies conducted in Ethiopia [24,25], could be due to the larger sample size of the current study. In this study, the majority of students were unaware about colour vision deficiency disease, except students from Health Science and Medicine.…”

Section: Discussioncontrasting

confidence: 86%

“…Unnoticed deficiency may lead to professional inefficiency and some risks. A study conducted by Abebe and Wondmikun [24] on defective colour perception amongst licensed car drivers in Addis Ababa revealed a prevalence of 4.50% of colour vision impairment. Furthermore, the results showed that 31.8% of colour blind subjects had road traffic accidents the past three years prior to the study.…”

Section: Discussionmentioning

confidence: 99%

“…In addition, in some fields of studies such as electrical engineering, agriculture, laboratory, forensic sciences, chemical engineering, soil engineering and architectural engineering normal colour vision is important [2,13,22]. In Ethiopia, there are a limited number of studies done to assess the prevalence of congenital colour vision deficiency and its potential professional impacts [23][24][25][26][27][28]. The objective of the present study was to assess the prevalence and allele frequencies of red-green colour vision defects among students at Hawassa University, Ethiopia.…”

Section: Introductionmentioning

confidence: 99%

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Prevalence and allele frequency of Congenital Colour Vision Deficiency (CCVD) among students at Hawassa University, Ethiopia

Mitiku

Tolera

Tolesa

2020

J. Egypt. Public. Health. Assoc.

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Background: The prevalence of congenital colour vision deficiency (CCVD) varies from race to race and differs in different geographic regions. Colour vision deficiency or colour blindness, is the inability or decreased ability of discriminating certain colour combinations and colour differences under normal lighting conditions. This study aimed to determine the prevalence of congenital colour vision deficiency among students at Hawassa University. Methods: A cross-sectional survey was employed involving 4004 students (females = 1171 and males = 2833) from four campuses, namely, Institutes of Technology, College of Health Science and Medicine, College of Agriculture and Main Campus. The Ishihara pseudo-isochromatic 24 plate edition was used to test the colour vision of students under natural day light condition. Results: The prevalence of CCVD in the present study was 2.85%. A hundred and six (3.75%) males and eight (0.68%) females were affected with congenital colour vision deficiency. The frequencies of achromacy, deutan and protan in male subjects were 4 (0.14%), 82 (2.89%), and 24 (0.85%), respectively. Deutan was highest among students of Amhara ethnic origin (38, 2.51%), but the frequency of protan was highest amongst Oromo students (10, 0.8%). Conclusion and recommendations:The overall prevalence of CCVD found in the present study was lower compared to the previous studies done in Ethiopia. There was clear variation in the prevalence of colour vision deficiency among students of various ethnic groups. Proper screening, education and counseling are needed to minimize impacts of CCVD in the country, and can also be beneficial for the affected subject in tackling difficulties in everyday work and for proper choice of future profession.

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Section: Discussioncontrasting

confidence: 86%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Prevalence and allele frequency of Congenital Colour Vision Deficiency (CCVD) among students at Hawassa University, Ethiopia

Mitiku

Tolera

Tolesa

2020

J. Egypt. Public. Health. Assoc.

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“…A study looking at a 1958 British cohort, with over 300 individuals with congenital colour vision deficiency and a case‐control study by Tagarelli and colleagues reported no association between congenital colour vision deficiency and increased risk of road traffic crashes; however, drivers with a colour vision deficiency have reported difficulties with identifying road lights and one cross‐sectional study involving 85 individuals with congenital colour vision deficiencies suggested an association between congenital colour vision deficiency and increased risk of road traffic crashes …”

Section: Resultsmentioning

confidence: 99%

Is screening for congenital colour vision deficiency in school students worthwhile? A review a

Ramachandran

Wilson

2014

Clinical and Experimental Optometry

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This review analyses the literature on screening for congenital colour vision deficiency in school students, which predominantly uses the Ishihara test. The review was framed with respect to the established Wilson and Jungner criteria for screening programs. These criteria relate to the characteristics of the condition concerned, the performance of the screening test, the existence of treatment options and the performance of screening programs.The literature reviewed suggests that congenital colour vision deficiency has not been shown to increase risk of road traffic crashes and is not a preclusion to driver licensing in most developed countries. The occurrence of congenital colour vision deficiency has been used to limit entry into certain occupations; however, the value of screening school students with regard to occupational preclusion is questionable. Stronger evidence exists indicating no association between congenital colour vision deficiency and level of educational achievement. Studies showing any association between congenital colour vision deficiency and other health and lifestyle impacts were rare. The most commonly used screening test (using Ishihara pseudoisochromatic plates) performs well with respect to detecting red-green colour vision deficiencies. Finally, the only interventions we identified for congenital colour vision deficiency were management ones around the availability of specific tinted lenses and computer programs to aid colour perception in certain tasks.Given this picture, the weight of evidence appears to be in favour of not adopting (or discontinuing) routine colour vision screening programs for school students; however, it may be worthwhile for a career advisor to refer school students to an optometrist or ophthalmologist for colour vision screening, upon expression of interest in an occupation where normal colour vision is either particularly desirable or is a regulatory requirement.

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“…14 Even though medical intervention advancements have resulted in significant change, action needs to be undertaken in preventing the problem because optical problems cause permanent blindness and child mortality. 15 …”

Section: Introductionmentioning

confidence: 99%

Prevalence and factors associated with childhood visual impairment in Ethiopia

Bezabih¹,

Abebe²,

Fite³

2017

OPTH

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BackgroundVisual impairment is a significant loss of vision. It has an impact on the prosperity of different countries. It has been difficult to plan preventive measures against visual impairment due to the scarcity of data about the extent of the problem.ObjectivesThe study was aimed at assessing the prevalence and identifying factors associated with visual impairment among school-age children in Ethiopia.Materials and methodsA cross-sectional study design was used in four randomly selected schools found in Addis Ababa from May 15 to June 14, 2016. A total of 804 school-age students were selected using the simple random sampling method. Bivariable logistic regression and multivariable logistic regression were conducted. A p-value <0.05 was taken as a significant association.ResultsA total of 718 students participated in the study, obtaining a response rate of 89.3%. In all, 7.24% of school-age children were visually impaired, of whom 3.9% had low vision and 3.34% had severe visual impairment. Factors associated with visual impairment were being female (adjusted odds ratio [AOR], 2.28; 95% confidence interval [CI], 1.06–3.50), being in the age group of 10–13 years (AOR, 2.94; 95% CI, 1.36–6.22), being in the age group of 14–18 years (AOR, 4.06; 95% CI, 2.17–11.95), being a private school student (AOR, 2.61; 95% CI, 1.81–4.41), watching television for 2–4 hours/day (AOR, 3.56; 95% CI, 1.37–7.34), watching television at <1 m (AOR, 7.65; 95% CI, 2.59–34.61), watching television at 1–2 m (AOR, 6.89; 95% CI, 1.74–25.27), mobile exposure for 2–4 hours/day (AOR, 2.61; 95% CI, 1.35–4.58), mobile exposure for >4 hours/day (AOR, 3.05; 95% CI, 1.41–9.18), medical visit while experiencing symptoms (AOR, 11.32; 95% CI, 1.80–82.25) and no medical visit experience (AOR, 3.84; 95% CI, 0.46–31.76).ConclusionThe majority of the visually impaired school-age children had low vision. Sex, age, school type, television exposure duration, the distance of television exposure, mobile exposure and medical visit were factors associated with visual impairment. Increasing community awareness about early detection of visual impairment and providing affordable eye health service may decrease the prevalence of visual impairment.

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Defective Color Perception Among Car Drivers in Addis Ababa, Ethiopia

Cited by 10 publications

References 12 publications

Prevalence and allele frequency of Congenital Colour Vision Deficiency (CCVD) among students at Hawassa University, Ethiopia

Prevalence and allele frequency of Congenital Colour Vision Deficiency (CCVD) among students at Hawassa University, Ethiopia

Is screening for congenital colour vision deficiency in school students worthwhile? A review a

Prevalence and factors associated with childhood visual impairment in Ethiopia

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