Flight Safety: How Aging Affects Night Flying and Vision

Originally published in 1999

• Ability to color discriminate decreases.
• Older pilots require more light in order to see.
• Processing visual information takes longer
• Diseases, which can affect vision-high blood pressure, diabetes and arteriosclerosis-become more common.
• Pupil size actually decreases significantly.
• Range and speed of eye focus decreases.

Source: Plane & Pilot, November 1999