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Dark Adaptation - After thirty minutes the rods will be...

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Steve Creasy 10/11/2006 12:30 T/TH Dark Adaptation Project Dark Adaptation Chart 0 1 2 3 4 5 6 7 8 9 10 0 5 10 15 20 25 30 Time (Minutes) Sensitivity Series1 1. The dark adaptation curve is kinked because there are two separate functions for the cones and rods. The Cones respond for the first five to ten minutes, then the rods are used for the last twenty minutes. 2. Humans take thirty minutes to completely adapt to the dark because it takes thirty minutes for the rhodopsin in the cones to regenerate.
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Unformatted text preview: After thirty minutes, the rods will be fully dark-adapted and the rhodopsin will be at peak levels. 3. Oncoming car headlights would inhibit the dark adaptation process by breaking down rhodopsin, which will cause the process to take much longer than the normal thirty minutes. When dark adaptation is inhibited, night vision becomes worse and people can become temporarily “night blind” after looking at bright headlights....
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