, Gupta Rani, Kharel Sushil , Mainalee Mandira , Raut Binod 3 , Dhungana Arun. 2017. “Prevalence of Congenital Colour Vision Deficiency (CVD) in School Children of Bhaktapur, Nepal”. International Journal of Medical Science and Clinical Invention 4 (8). https://doi.org/10.18535/ijmsci/v4i8.01.