What happens to the vision with age?
Ans : The majority of visual impairment and blindness in older people is caused by age-related macular degeneration, glaucoma, cataracts, and diabetic retinopathy. Age-related changes in vision that can affect driving include decreases in central visual acuity and peripheral vision, diminished ability to accommodate, and heightened sensitivity to glare. Over age 50, the total horizontal peripheral visual field declines from 170 degrees to 140 degrees. Drivers with deficits in peripheral vision have twice as many collisions as those with normal vision. Many older adults avoid driving at dusk and twilight because of these changes.
