Incidence of ocular and systemic diseases affecting visual function among state bus drivers

Area of Science:

• Ophthalmology
• Public Health
• Occupational Health

Background:

• Bus drivers require good vision for safe operation.
• Ocular and systemic conditions can impair visual function.
• Regular health screenings are essential for professional drivers.

Purpose of the Study:

• To determine the prevalence of vision-threatening ocular and systemic diseases among bus drivers.
• To identify specific conditions affecting visual function in this population.
• To inform public health strategies for driver safety.

Main Methods:

• Retrospective analysis of 3042 bus drivers' records from a South Indian tertiary eye hospital.
• Review of demographic data, refraction, and ocular/systemic disease status.
• Assessment of conditions with vision-threatening potential and required treatments.

Main Results:

• 25.0% of drivers had vision-threatening systemic diseases, most commonly diabetes mellitus (18.7%).
• Refractive error was the most frequent ocular issue (45.0%).
• 9.5% had vision-threatening ocular diseases, including diabetic retinopathy (4.0%) and cataracts (1.9%).

Conclusions:

• A significant proportion of bus drivers have vision-impairing conditions requiring attention.
• Some drivers may need surgical intervention to maintain driving fitness.
• Comprehensive eye and systemic health evaluations are recommended during license renewal.