hi welcome to engvid.com i'm adam in today's video i'm going to walk you through the process of
buying glasses okay 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 so before we do
that we're going to look at who you should talk to before you buy your glasses okay
you can go to an optometrist an ophthalmologist and a petition or any of these guys okay or women
the first of all what's the difference between optometrist and 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
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 a 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 now an optician is the 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 some opticians also give vision tests but it's highly recommended if you need
glasses 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 your 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 okay 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 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 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 middle for distance okay or you can buy progressives now i don't know exactly
what progressives look like but the idea is that they work for both far and near-sighted the lens
your eye adjusts to the lens it's built in a way that you can see in all directions right anywhere
you look any distance it will work and your eyes will adjust naturally and everything will be clear
okay these are very good a little bit expensive but if you have different types of visions you
can get them all fixed in one shot you can also buy transitions now what transitions do
they adjust the tint okay so this is a tint this is the darkness basically the lens becomes dark
so when you go outside and it's sunny the the lens becomes dark naturally when you go back
inside the darkness goes away and they become clear again so it's basically regular glasses
and sunglasses in one lens there's a certain chemical inside that adjusts to the light
or you can just buy sunglasses now be very careful when you're buying sunglasses okay
make sure that they have uv protection there are a lot of cheap sunglasses that you can
buy on the street or in the store ten dollars twenty dollars and they say uv protection but
be very careful most of them don't have it it's just cheap plastic
it's dark now what happens if you don't have uv protection the darkness opens up your pupil
yes same word as student but pupil is the black area the iris basically the black area of your eye
it opens up more and more uv comes in so if you're buying cheap sunglasses you're actually hurting
your eyes very much okay make sure you have the uv protection when you're buying sunglasses
transitions are excuse me automatically come with it now tinted glasses they just put a coat
basically a plastic coat of like a sunglass coat not good be very careful with those now
you can also get some features on your lenses for example anti-glare anti-glare they're also
called anti-reflective what this is is a special coating on the lens that doesn't let the light
sit on the lens so if you're wearing glasses and you see little spots of light from let's say
light bulbs or the sun or whatever this coating makes them not there so everything is very clear
another way you might see is polarized polarized glasses especially sunglasses basically remove the
glare so all you see is very clear what's in front of you without the little light spots on the lens
now next you have to think about your frame this is more of a fashion choice
but it also has to be a a question of comfort right
you can have frameless glasses or you can have ribbed glasses so let's say this is the
sort of let's say this is the glasses this is the frame now you can have only the lens
or you can have a rim that's holding the lens in like that right both are available it's a
matter of choice more than anything else okay so rimmed with the frame frameless no frame only lens
then there are different styles aviator wayfarer etc you don't need to worry about these names when
you go to the store to buy your glasses they will show you all the different styles you try them on
see which one you like etc make sure that they are sitting comfortably
on the bridge of your nose so this is the bridge of your nose it looks like a bridge
make sure your glasses are sitting comfortably most glasses these days are made of plastic
the lens is made of plastic glass is too heavy it sits on the bridge and for many people it
gives them a headache because the weight squeezes now frames come in metal in plastic
or titanium titanium is very very lightweight ultra lightweight we can say i'll put it here
ultra lightweight means super light you don't even really feel them so those are very
comfortable but again more expensive and then you have your contact lenses again as you need so if
you need glasses like for example i'm getting a bit older now i need reading glasses or i will
soon enough i need to go and make sure that i get the right glasses for me
make sure you get the right glasses for you you're gonna have to wear them every day
make sure they're comfortable okay if you have any questions about this
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and come back for more helpful videos uh with all kinds of topics okay i'll see you again soon bye