Frequency of color blindness in pre-employment screening in a tertiary health care center in Pakistan

Shaukat Ali Chhipa, Farzeen K. Hashmi, Shehreen Ali, Mustafa Kamal, Khabir Ahmad

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


Objective: To describe the frequency of color vision deficiency among Pakistani adults presenting for pre-employment health screening in a tertiary care hospital. Methods: The cross-sectional study was carried out at the Aga Khan University Hospital, Karachi, and the data was collected for color vision deficiency, age, gender, and job applied for from pre-employment examination during 2013-2014. IBM SPSS 20 was used for statistical analysis. Results: Three thousand four hundred and thirty seven persons underwent pre-employment screening during 2013 and 2014; 1837 (53.44%) were males and 1600 (46.65%) females. The mean age was 29.01 (±6.53) years. A total of 0.9% (32/3437) persons had color vision deficiency with male being 1.4% and female 0.4%. Conclusion: Color vision deficiency was observed in 0.9% of candidates screened for pre-employment health check up in a tertiary care hospital. The color vision deficiency was predominantly present in male individuals.

Original languageEnglish
Pages (from-to)430-432
Number of pages3
JournalPakistan Journal of Medical Sciences
Issue number2
Publication statusPublished - 1 Mar 2017
Externally publishedYes


  • Color vision deficiency
  • Heath care
  • Pre-employment examination


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