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Simple laser test for eyesight?

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Major Scott

Jan 1, 1970
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A long long time ago when I was applying to study in Universities, a lecturer showed us a demonstration with a laser. As an aside, he told us to look at the pattern projected by the laser onto the wall and do something which I forget (move your head from side to side or something), and if the pattern stayed still you had 20-20 vision. Does anyone know the details?
 
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Major Scott

Jan 1, 1970
0
Haven't heard about that. Is it supposed to test acuity?

I can't remember any details, I was hoping someone else had heard of the test. Searching on google for laser and eyesight just turns up the laser eye surgery.
 
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Major Scott

Jan 1, 1970
0
With PHucker & lasers - its a test for stupidity.

Do not look into laser with remaining eye.

That tree in my front garden I posted a photo of recently, I think it's dead. Might have to tow it out - being in the front this could be fun. I shall set up a video camera.
 
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