Assessment of the Prevalence of Colour Vision Deficiency among School Children in Bhadravati, Shivamogga District, Karnataka, India

H.S Suhas, E Chandrakala

Abstract: Colour blindness is an X chromosome linked recessive disorder inherited from mother to son. A cross-sectional study was conducted among the 1063 selected school children samples. The analysis found that 23 (2.16%) samples were identified with colour vision deficiency, all of which were males, with no females identified. Further, among the 23 identified colour blind students? samples, the protan type of CVD is observed in 3 students and is denoted as protanopes (red light). Similarly, the Deutan type was observed in 20 male students? samples. Among the CVDs, 23 male samples of Deutan (86.95%) were more prevalent than Protan (13.04%). The objective of this study is to assess the prevalence of colour vision deficiency and the screening of red-green colour blindness.

Keywords: Colour vision deficiency, Mutation, Chromosome, Deutan, Protan