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Author Topic: Why can't I see anything?!  (Read 2541 times)

Offline Simulated

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Why can't I see anything?!
« on: 05/12/2007 18:35:23 »
OK I lied I can still see, but I just came in from outside with all the snow and the cold and my eyes are like not letting me see anything? Why is that?


 

Offline stana

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Why can't I see anything?!
« Reply #1 on: 05/12/2007 18:41:14 »
Your eyes have got used to the whiteness and the glare of th snow, and when you come inside its much darker? hence your unable to see for a short while. The same thing happens when you have a light on in your bedroom. You turn off the light annd get into bed, after a short while you will be able to see things you couldnt of seen when you first switched the light off!
 

Offline Simulated

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Why can't I see anything?!
« Reply #2 on: 05/12/2007 19:03:20 »
Ah that's what I was thinking. So If i ate a bunch of carrots it wouldn't make it so extreme? lol.
 

Offline techmind

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Why can't I see anything?!
« Reply #3 on: 05/12/2007 23:16:13 »
OK I lied I can still see, but I just came in from outside with all the snow and the cold and my eyes are like not letting me see anything? Why is that?

Two things happen:
 - firstly the pupil of your eye closes in bright light (like the iris/aperture control on a camera) and takes a while to open up again when you go somewhere dark
 - secondly the photo-receptors in the retina can become saturated and bleached by all that bright white light, and take a while to recover normal sensitivity.

Think of a nice warm summer day; you lay out in the sun on your back and close your eyes. To start with you see a strong red through your eyelids, but over a minute or so the red becomes slightly weaker. Now open your eyes and look around and the whole garden looks bluey-green because the red-receptors in your eye got temporarily desensitised by all that red light when your eyes were closed and the sun shone on your eyelids.
 

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Why can't I see anything?!
« Reply #4 on: 06/12/2007 01:59:43 »
AH well how come if I just lay there and rub my eyes for aw hile and just squint really hard and sometiems not even squint it um has this yellow circle type thing?
 

Offline stana

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Why can't I see anything?!
« Reply #5 on: 06/12/2007 16:26:29 »
thats because your damaging the nerve endings and stuff in your eyes, I used to push my fingers into my eyes, and i seen like..a visualisation like on game consoles! I can still do it, and once i let go, the visison just slowly fades from my eyes.
 

Offline Simulated

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Why can't I see anything?!
« Reply #6 on: 06/12/2007 23:22:09 »
Ah I see! Sometimes it looks like oh what the best thing to describe it. Um windows media player vizulations on random!
 

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Why can't I see anything?!
« Reply #6 on: 06/12/2007 23:22:09 »

 

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