Re: (meteorobs) Dark Adaption

• To: meteorobs@jovian.com
• Subject: Re: (meteorobs) Dark Adaption
• From: gmike@cstonedot net
• Date: Tue, 13 Feb 2001 17:26:13 GMT
• Reply-To: meteorobs@jovian.com
• Sender: owner-meteorobs@jovian.com

Hmmm, I haven't seen anyone give an easily readable explanation of the true
reason for 'crashing into things' experience by Jeanne (aside from possible
complications from her auto accident) when wearing a patch: depth perception
(viewing things in 3D) depends entirely on having 2 eyes, e.g., 2 slightly
separated points of view.  With only a single viewpoint, your vision becomes 2D
- flat, and unless you have, in your head, a very good model of wherever you
happen to be (tough to do in the dark!) in order to compensate for the loss of
depth perception you will crash into things, take missteps, and fail to grasp
things on the first try.

So it isn't just you, Jeanne - it happens to anyone when you restrict vision to
just a single eye.

Michael
Doyle

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• Re: (meteorobs) Dark Adaption
• From: Rob McNaught <rmn@aaocbn.aaodot gov.au>

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