Question about Nearsightedness and Physics

[Freshgeardude]

I am learning a chapter on refraction, and ofcourse we are going to talk about nearsightedness and farsightedness.

so I have this question.

in THIS picture, it explains what happens to people who are far or near sighted.

This question came up, and I couldnt think of an answer.

Nearsightedness, the bottom part of the picture shows an uncorrected eye. the focal point is not at the retina but rather before it. it also shows an line of "light" which gets bent to that focal point, and dotted lines to where to hit the retina.

why is it that people who are nearsighted do not see things inverted if the bottom light wave hits higher than where it should and the higher light wave hits lower.

a magnified glass can easily explain this. this is why when you hold the glass at a certain places images are upside down. how come this is not the same with eyes?

thanks in advance

 

[amdhunter]

Your brain adjusts the image you see. There was an experiment back in the 60s or 70s where a few people had worn glasses that effectively made everything they saw upside down.

After a few days, their brains adjusted the image to normal, and when they took the glasses off, their normal vision was upside down.

The brain is an amazing organ sometimes. I just wish mines worked harder.

 

[Freshgeardude]

Originally posted by: amdhunter
Your brain adjusts the image you see. There was an experiment back in the 60s or 70s where a few people had worn glasses that effectively made everything they saw upside down.

After a few days, their brains adjusted the image to normal, and when they took the glasses off, their normal vision was upside down.

The brain is an amazing organ sometimes. I just wish mines worked harder.

your theory makes sense. any articles to prove?

 

[lokiju]

http://www.madsci.org/posts/ar...03/858984531.Ns.r.html

Theres some books listed at the bottom of that page on the topic.