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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Is night vision independent?
From: Tom Sult
Date: 2015 Nov 08, 14:44 -0600
From: Tom Sult
Date: 2015 Nov 08, 14:44 -0600
There is interconnection. But the issue with night or dark adaptation has less to do with the iris as that will accommodate rather quickly. It is the retina. Using a red light will preserve night vision.
Tom Sult, MD
Tom Sult, MD
Author: JUST BE WELL
Perhaps one of our MDs can answer this. If you’re taking a series of shots after dark with a useable or an artificial horizon, is there any point closing your shooting eye while you use the night-light to read the arc with your other eye in an attempt to preserve night vision, or are both eyes interconnected? I’ve tried closing one eye, and opening it while looking in the mirror, but everything happens too quickly to spot any iris movement. DaveP
