How, exactly, did man cause cataracts, nearsightedness, farsightedness, colorblindness, and other problems with the eye?
Cataracts: Not sure yet
Nearsightedness: Depending on what type of vision you're born with - which comes from your parents (Man) - you may become nearsighted faster, slower, or not at all compared to other individuals depending on your habits (I would assume). I am nearsighted because I spend a great deal of time looking at things close up.
Farsightedness: Same thing as nearsightedness in principle. I think, though, most people are born farsighted. I've read that it is a lack of strength of eye muscles that cause you to see only things far away and not close up. I think we only have muscles to stretch the eye and not to contract it. Therefore we have to practice focusing on things close up to strengthen those muscles which stretch the eye and then allow you to focus well on things close up.
To correct nearsightedness I think you need to relax the eye. There are many exercises (some may work - others may not) that are out there for correcting nearsightedness.
Colorblindness: Who can say what caused this to begin with except genetics. We don't currently know what caused the genetic problem though. Cause and effect I suppose.
If these issues are caused by man, how did they find their way into every culture in every corner of the world?
Because man is in every culture in every corner of the world.
Cataracts: Not sure yet
Nearsightedness: Depending on what type of vision you're born with - which comes from your parents (Man) - you may become nearsighted faster, slower, or not at all compared to other individuals depending on your habits (I would assume). I am nearsighted because I spend a great deal of time looking at things close up.
Farsightedness: Same thing as nearsightedness in principle. I think, though, most people are born farsighted. I've read that it is a lack of strength of eye muscles that cause you to see only things far away and not close up. I think we only have muscles to stretch the eye and not to contract it. Therefore we have to practice focusing on things close up to strengthen those muscles which stretch the eye and then allow you to focus well on things close up.
To correct nearsightedness I think you need to relax the eye. There are many exercises (some may work - others may not) that are out there for correcting nearsightedness.
Colorblindness: Who can say what caused this to begin with except genetics. We don't currently know what caused the genetic problem though. Cause and effect I suppose.
If these issues are caused by man, how did they find their way into every culture in every corner of the world?
Because man is in every culture in every corner of the world.