Prevalence of Congenital Colour Vision Deficiency (CVD) in School Children of Bhaktapur, Nepal

Abstract

Background: The incidence of congenital colour vision deficiency shows different trends and may vary in different geographical areas. Colour plays vital role in daily life functioning but there is no effective screening for Colour Vision Deficiency (CVD) at any school level. The school children with CVD may feel difficulty in identifying colour figures, lab instruments and specimens which may lead to failure in the examination. Not only this they may find difficulty in daily life functioning so, this study is aimed to find out the incidence of CVD in school children. Methods: A total of 585 school children including 312 males and 273 females between ages 10-16 years were examined for congenital CVD in different schools of Bhaktapur. Each school child was shown the complete range of Ishihara's plates under day light conditions at distance of 75 cm and each plate was shown to them for duration of 5 seconds. Results: Children's colour vision was tested using Ishihara's 38 Plates edition. Among 312 boys, 16(5.12%) were colour deficient. Among 273 girls, 7(2.56%) were colour deficient. Conclusion: With this incidence of colour vision deficiency it shows the importance of screening for CVD in school children and counseling them for daily life functioning and making aware about the choice of career in future.

Pattern of Inheritance and Career Choices of Secondary School Students Screened for Color Vision Disorders

“…There is the need to incorporate color vision screening into the school curriculum as this may result in timely intervention in career choices in certain individuals [24,25].…”

Skrining Tajam Penglihatan dan Buta Warna Pada Siswa SMP 5 Tualang

“…Sedangkan hasil pemeriksaan buta warna didapatkan persentase siswa laki-laki yang mengalami buta warna parsial 1,9%, hal ini sesuai dengan penelitian di India pada anak usia 6-15 tahun dengan prevalensi buta warna 1,89% (Moudgil et al, 2016). Lebih rendah jika dibandingkan dengan penelitian yang dilakukan pada 435 anak usia 6-16 tahun di populasi urban Jakarta yang mendapatkan prevalensi buta warna sebesar 5,97% (Nusanti & Sidik, 2021) dan 5,12% pada anak laki-laki usia sekolah (10-16 tahun) di daerah rural Nepal (Sushil et al, 2017).…”

Prevalensi dan Karakteristik Buta Warna pada Populasi Urban di Jakarta

“…(5) Penelitian oleh Sushil et al pada 585 anak usia sekolah (10-16 tahun) di area rural Nepal juga juga mendapatkan prevalensi buta warna yang lebih tinggi pada anak laki-laki, (5.12%) dibandingkan anak perempuan sebesar (2.56%). (6) Sedangkan pada penelitian ini didapakan 25 (5,97%) anak usia 6-16 tahun yang menderita buta warna baik berjenis kelamin laki-laki dan perempuan. Sebagian besar responden anak dan orangtuanya tidak mengetahui akan kondisi buta warna yang dimiliki.…”