DefinePK

Abstract

Purpose:  To evaluate the quality of visual function and visual acuity both static and dynamic in professional bus drivers in three cities of India.
Study Design:  Cross sectional study.
Place and Duration of Study:  Eye Clinic of Department of Optometry, Chandigarh Group of College, Jhanjeri, Mohali, Punjab, India from April, 2024 toJune, 2024.
Methods:  A sample of 215 professional bus drivers aged 25 to 45 from the Tricity was selected with best corrected visual acuity of 6/6, with or without a refractive error (up to +/-3.00 spherical). The drivers with at least one year of driving experience and a minimum of five hours of daylight driving each day were included.Refractive error, static visual acuity (SVA) and dynamic visual acuity (DVA), color vision, contrast vision, glare vision and stereo vision were assessed.
Results:  The mean age of participants was 32±5.9. There was a significant difference in SVA and DVA of the same person (p <0.00001). The time taken for the evaluation of the DVA was lesser as compared to the SVA.A moderate positive correlation was observed between visual acuity and stereopsis (rs=0.43) and between visual acuity and contrast sensitivity (rs=0.41), while other visual parameters showed weak or negligible associations.
Conclusion:  Visual acuity and related visual qualities significantly influence driving performance, emphasizing the need to assess both static and dynamic visual acuity in professional drivers.