8 posts tagged with vision and optics.
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Job suggestions that require acute visual identification skills.

I have severe synesthesia, and part of it means that I hear what I see. Would this be specifically useful in any professional capacity? [more inside]
posted by nímwunnan on Mar 4, 2013 - 14 answers

Sharp eyes, sharp eye exam?

Eyes 20/10 with correction, where to get the sharpest prescription in the US? [more inside]
posted by zippy on Sep 17, 2012 - 12 answers

How do positive and negative astigmatism differ?

Why are there two different methods (positive and negative) for recording astigmatism? [more inside]
posted by dmd on Jan 6, 2012 - 3 answers

Impossible Colors

An optical illusion based on retinal fatigue allowing you to "see" an "impossible color"? [more inside]
posted by darkstar on Jul 5, 2011 - 10 answers

Art that shows visual effects of looking from close distances?

If you lay your forehead on the palm of your hand and look down at your forearm, you get a distorted view of the connection between wrist and forearm, as well as a sort of "ghost" forearm silhouette at the margins. What's this called, why does it happen, and are there any paintings or other art that captures these effects?
posted by shivohum on Nov 29, 2010 - 13 answers

Viewing The World Through Two-Colored Glasses

Any harm in wearing sunglasses with two mismatched lenses? [more inside]
posted by Doctor Suarez on Apr 3, 2010 - 5 answers

A Vision Question.

When I look at something (without my glasses) that's about 100 feet away, it looks a little blurry. If I look at a photo that includes stuff that's 100 feet away from the perspective, it's not blurry, of course, it's just smaller. BUT, if I look in a mirror, let's say a rear view mirror of a car, at something that's 100 feet behind me, it looks blurry, rather than just small. [more inside]
posted by Framer on Jul 19, 2005 - 20 answers

Visual Field Distortion

Pizza induced visual field distortion : When I chew - as on a piece of pizza (or whatever) and stare at a computer screen, especially from it distance, I perceive a "ripple" (or a "flicker") on the screen which is congruent with my chewing action. (more inside) [more inside]
posted by troutfishing on Apr 10, 2004 - 17 answers

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