Introduction About 90% of sensory information to a driver is through vision. Vision is the most important sense for driving. The purpose of this study was to determine vision and causes of visual defects among public vehicle drivers.
Methods In this cross-sectional study, vision and causes of visual deficits were evaluated among drivers that were selected sequentially by transportation organization in Kerman province in 2009.
Results Of 4000 public drivers assessed, 361 (9.02%, 95% CI 9.01 to 9.03) had visual acuity at the level not approved for driving by traffic rules in Iran (with old glasses). After ocular examination and correction of refractive errors they were 69 (1.72%). Legal blindness (VA<1/10) was found in 13 eyes. The common causes of visual deficits were refractive errors (88.7%), age related macular degeneration (10.9%) and amblyopia (6.3%).
Conclusion A large number of public vehicle drivers did not have vision at the level approved for driving in Iran. Most of them, their vision can be improved. Some of them should not be allowed to drive due to irreversible poor vision.
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