In today's article, I told you through the process of buying blue light glasses whether prescription glasses or regular glasses some people need to wear them you need to know how to go into a glass store and buy yourself a good pair.
Buying Glasses
So before we do that we're going to look at who you should talk to before you buy your glasses, you can go to an optometrist an ophthalmologist, and a petition or any of these guys okay or women
first of all, what's the difference between an optometrist and an ophthalmologist an optometrist is sort of a doctor I mean I don't want to offend anyone who's an optometrist but it's not a real medical doctor these people go to university for a shorter amount of time and they study a very specific or very limited amount about the eyes so they can do a vision test they can check your vision they can prescribe glasses for you if you need them if you have certain diseases they can prescribe medicine to correct it and drops and whatnot.
Who is Ophthalmologist
An ophthalmologist is an actual medical doctor he or she went to full medical school and then specialized in the eyes okay in eye medicine this person can also be an eye surgeon and if you need any work especially if you have cataracts things like that so if you have very serious eye issues you would go to an ophthalmologist if you just need your vision tested and you need glasses you can go to an optometrist
Who is Optician
Now an optician is a person who makes glasses okay he or she gets a prescription from the optometrist and creates your lenses and puts them on the frame etc some opticians also give vision tests but it's highly recommended if you need glasses to go see an optometrist and buy your glasses from the optician don't get your vision test there necessarily
So now what's going to happen they're going to check your vision if you have 20/20 vision then you have a perfect vision right you don't need glasses everything is fine basically what 2020 means this is not your prescription number this means that anything that is 20 feet away you can see clearly with both eyes if you're not 20/20 if you go below this then they start measuring your eye.
The curvature of your eye the curve of your eye and then they know where the light is going and hitting your cornea but we won't get into all the technical stuff and that'll give you a prescription now some of you might be farsighted some of you might be nearsighted farsighted you can see clearly far away nearsighted you can see clearly something that's up close now I'm not going to get into all the details because Ronnie another teacher here on engVid did a very good lesson on that you can go check that lesson out I'm going to concentrate on the glasses what you need to know to buy them
So first of all if you're buying glasses keep in mind some people call them spectacles this is a little bit old-fashioned but some people still use it and you should get a prescription to let me use the blue one here basically make sure that the doctor gave you the exact number that you need for each eye okay now when you're buying glasses you have to think about the lens and the frame now if you're buying contact lenses that go right into your eye you just go by the prescription you put them in your eye no problem there so when you're buying lenses now there are different types of lenses you can buy a bifocal basically let's say this is the lens you have two lenses in one lens and at different focuses and that's why it's called bi trifocal will have three for close for the middle for distance okay or you can buy progressives.
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