Maintaining Night Vision

Because the eyes take a long time to adjust to darkness, it is important to protect night vision once it is acquired. To maintain night vision—

i Avoid looking at any bright light. Bright light will eliminate night vision and require readaptation. i Shield eyes from parachute flares, from spotlights or from headlights. i When using a flashlight to read a map or any other written material:

n Put one hand over the glass to limit the area illuminated and the intensity of the light. Keeping one eye shut will reduce the amount of night vision lost.

n Cover the light with a red filter to help reduce the loss of night vision. n Minimize the time spent using a flashlight.

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