What does +4.50 glass perscription mean ?? Is that really bad eye sight ? Does anyone have any good articles?

Question

I should also add this is for a child 21 months so its hard to understand whats going on with her. She cant tell you i cant see

Answer 1

you perscription really has nothing to do with how good or bad you eyes are. The only thing is has to do with your eyes is how well you can refract light while wearing them. A perscription is to help correct your vision to 20/20. If it can't be then that makes the difference. When a glasses rx is filled and people say things like I'm still not seeing perfect like I used to (mostly in cases of being over the age of 40 with presobia and degerative eye diseases) these are case that an opthamologist should see. Some can be treated like cataracts and glaucoma others like macular degeneration can't be. Its best to talk to you dr and ask them what you vision is in terms of 20/20. You can't determine this number by looking at your perscription no matter how hard you try. Its something a Optometrist or Opthamalogist can  check.

http://en.wikipedia.org/wiki/Hyperopia

Answer 2

+4.50 means that you are hyperopic. Your eye is too short for your optical power, meaning that light focuses behind your retina, and with that kind of a number, I'm guessing you can't really focus well at any distance without glasses.

The adventage of being hyperopic is that the eye can focus as though it is focusing up close, meaning that people with low degrees of hyperopia can see well without glasses. However, this focusing causes headaches and the like, so it's not very recommended. On a side note, people with hyperopia may experience the effects of presbyopia earlier (presbyopia is part of the normal process of aging, in which the eye starts losing it's ability to focus up close, read http://en.wikipedia.org/wiki/Presbyopia for more info).

You have pretty bad eyesight, although it doesn't matter because it can be easily corrected with contacts or glasses. I googled a little and found a great websites which explains hyperopia and explains how it is corrected through refractive surgery (if your are considering having one): http://www.lasersurgeryforeyes.com/hyper...

That's about it, I hope I've helped :)

Edit: try reading http://en.wikipedia.org/wiki/hyperopia

What do you mean by "it's for a child"? From what I understand from your edit, it would seem you have a 21 months old child who is highly hyperopic, which is odd. If you have anything to add, please mail me, I'd like to help.