Whats the difference between a vision screening and a dilated eye exam?
During a vision screening, your eye care professional will check your visual acuity using an eye chart, says NEI ophthalmologist and clinical fellow Dr. Lisa Faia. An eye chart has rows of five letters that get progressively smaller toward the bottom of the chart. If you can’t quite make out all the letters on the chart, you may need a more detailed assessment of your eyes.