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Features November 2015 Issue

Sight and Vision

left: The human eye is a complex mechanism as seen in this simplified drawing from the National Eye Institute (NEI).

Sight and Vision

Sight degrades as we age. Understanding is the key to enlightenment. Here’s how to get the best vision possible from your deteriorating sight.

The FAA’s Pilot’s Handbook of Aeronautical Knowledge is clear; “Of all the senses, vision is the most important for safe flight.” This statement is particularly true for instrument flying where sight must often overpower conflicting cues from our other senses. Over the years, we’ve likely forgotten the little bit we learned about vision in our initial pilot training. Let’s review the basics of vision and explore what happens as we age. Finally, we’ll look at what happens when vision goes awry at night in IMC.

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