SEVERITY OF HEADACHE WITH DIGITAL EYE STRAIN AMONG CALL CENTRE AGENTS DUE TO PROLONG SCREEN TIME AND ITS IMPACT ON WORK PRODUCTIVITY. FMHR [Internet]. 2025 Sep. 5 [cited 2026 Aug. 14];3(7):111-3. Available from: https://fmhr.net/index.php/fmhr/article/view/1036