What causes shortsightednes. Could it be prolong close work or just genetic factors? Please gives your view.?
Question:
Answers:
I think genetic factors are the strongest link. My optometrist (sp?) told me that close work and wearing my regular glasses to read won't really damage my eyes anymore than they already are. And so far he's been right. They haven't changed in almost 10 years since I got glasses and 5 years since I got contacts. But everybody in my family has some degree of nearsightedness, so it's probably 99% genetic. But other factors could come into play, like birth defects, injuries, infections, etc.
Other Answers:
Are you talking about Short Sightedness or Near Sightedness ? Being short sight is a learned behavior , being near sighted is a physical defect that may be inherited.
Prolonged close work does NOT cause nearsightedness. It is mostly genetics, and is caused by a misshapen eyeball. No amount of close work will cause your eyeball to become permanently misshapen. It can cause temporary eyestrain, but not myopia.
Source(s):
Certified Optician
According to my Opthamologist, it's the shape of my eyeball. Instead of being perfectly round, so the picture is displayed on the back, and read by the optic nerves, it is elongated, and I get a fuzzy picture. Along come the glasses that change the focus of the picture, to place it exactly on the back of my eyeball, so I can clearly see what's in front of me. Does that help?
Source(s):
Dr. Cohen, MD
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