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3 Cards in this Set
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- Back
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Something that will give away the location of a subject or an officer |
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How light affects the eyes |
The cornea, lens, and iris gather and control the amount of light allowed to enter the eye. The image is focused with the retina The retina: - Cones: good for day vision, light, and color; takes 2-3 minutes to adapt after moving into a dark area - Rods: good for night vision; central blind spot, look off center to view; full dark adaptation takes 30 minutes, but will function in 3 minutes |
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Night Vision Aids |
Don't rush into ambient light conditions; give your eyes time to adjust. When using a flashlight, quick flashes will hurt your night vision less than a continuous beam. Blink slowly Roll your eyes Use off center viewing |
