[Myopia] - Genetics

[houshasei]

Hello everyone, I have Myopia or near-sightedness. My mother is far-sighted and cannot see stuff that's near her without glasses. Is it possible that I still got my Myopia through genetics?

[fiveworlds]

Yeah. My mom is near-sighted but my dad wound up being far-sighted so they had both near and far sighted children.

[CharonY]

Considering that the detailed molecular genetics of myopia is not known and heavily influenced by the environment, it cannot be ruled out. But at the same time it is impossible to determine the precise cause, either.

[Asimov]

Houshase: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3058260/

 

Maybe .Glasses problems tend to be heredity but environment is a factor.Age of onset can be hereditary as well. Myopic children tend to be more myopic than their parents. Why? It is normal to lose near focusing ability over 40 or so.This is for sure hereditary.This means you cant adjust your focus from far to near work like reading. This is presbyopia relieved by reading glasses, not farsightedness. Sufficiently hyperopic { farsighted} people need glasses even to see far though their near vision is even worse. without glasses.

Hyperopia or far sightedness can occur at any age as can myopia or astigmatism.Astigmatism requires glasses or contacts with more power across one meridian, called cylinder lenses. Think of a football or spoon curved differently along different meridians.

I theorize evolution is a factor in what seems a fairly recent epidemic of myopia. Near work is a factor likely but also a person with myopia long ago had less chance of surviving to pass on genes...Glasses even the field somewhat and the gene gets passed along.

[houshasei]

Thanks for all the replies.

[Der_Neugierige]

23andme has done a gwas of myopia. Google it!

 

Its polygenetic risk driven in interaction with evironment.