Prevalence of Congenital Colour Vision Deficiency in Nigerians Living in Ugep, Cross River State
Journal Title: Ophthalmology Research: An International Journal - Year 2017, Vol 7, Issue 2
Abstract
Colour vision deficiency and colour vision blindness are synonymous terms describing poor colour discrimination by the visual senses. Nowadays, screening for these disorders is an established practice, so that those affected can be advised about occupational preclusions. Since population based study on the broader impact of colour vision defects is limited, this study was undertaken in Ugep, a rural community in cross river state of Nigeria. Using the cluster sampling technique, a convenient sample of 1500 males and females (of between 10-60 years) were selected. Plates 1-17 of the 2008 edition of the Ishihara’s colour album were then administered to the subjects in rooms brightly illuminated by day light. Subjects were then screened with Plates 1, 3, 5, 13 and 15. Study reveals that, the prevalence of congenital colour vision deficiency in Nigerians living in Ugep is 1.8% (28 of every 1500 subjects), while that of total colour blindness was barely 0.2%. Gender distribution of colour blindness appeared in about 2.8% of sampled male subjects, and 0.7% of sampled female subjects, indicating a significantly greater frequency in males than the females. Distribution of colour blindness by age revealed no sequence between age and the defect as p < 0.001, df=1. Population based screening for colour vision deficiency is recommended for helpful prevocational counselling.
Authors and Affiliations
R. N. Ativie, A. A. Aigbiremolen, O. E. Mukoro, J. C. Igweh
Keywords
Related Articles
- EP ID EP308828
- DOI 10.9734/OR/2017/30848
- Views 145
- Downloads 0
Prevalence of Visual Impairment among Deaf and Mute Schools Children
Background: Particular attention must be paid to ocular abnormalities in deaf children, as their early detection and proper treatment will greatly affect their social and professional performance. Aims: To determine the...
Evaluation of Tear Secretion in Thyroid Patients in Relation to the Thyroid Status and Previous I131 Treatment for Thyroid Cancer
Aims: To evaluate tear secretion of thyroid patients with no clinical evidence of thyroid ophthalmopathy in relation to thyroid status and history of I131 treatment by the use of the 2-minute Schirmer test I (test withou...
Fuch’s Uveitis: A Case Report
Introduction: Fuchs’ Uveitis (FU) is a chronic nongranulomatous anterior uveitis that accounts for 3% of all uveitis cases. Usually is asymptomatic but occasionally can cause floaters and decrease in visual acuity second...
Panophthalmitis Masquerading as Ocular Melanoma-an Eye Opener
Introduction: We report a clinicopathological correlation of a 45 year-old female who manifested as melanoma clinically and radiologically but turned out to have acute panopthalmitis on histopathology examination. We fee...
Asymptomatic Uveitis as Primary Manifestation of Sarcoidosis
Aim: To emphasize that ocular involvement in sarcoidosis may be the initial manifestation of the disease and can be completely asymptomatic. Presentation of Case: A 36 year-old female was referred to uvea service with de...