so if you are a sunglasses collector like me or perhaps you're just looking
to buy a new pair of sunglasses you've probably noticed a little p
symbol in the top right corner of your sunglasses or saw the word polarized and
wondered what's the difference between polarized
vs non polarized sunglasses and that's an excellent question so
that's what we're talking about today let's take a look
hey what's up this is dr alan here from the doctor i health show helping you
learn all about the eyes vision and finding the best vision products and
today we're talking all about polarized vs non polarized sunglasses
now myself i'm a huge sunglasses collector and fan
and i'll tell you something polarization makes a huge difference when it comes to
sunglasses if you've never heard of polarization
before or just wondered what in the world they're talking about when they
mean polarized we're talking about how
sunlight or light coming from any external source
comes down and hits an object and then reflects off of it when that light comes
down from something like the sun it is coming in every single direction
it's coming from a horizontal direction and up and down vertical direction
every possible angle that you can possibly have
so when light comes in crashes into an object specifically an object with a
flat horizontal surface such as the road a
car windshield maybe a large body of water such as a
lake a river or an ocean then the light that radiates
from those objects doesn't scatter in all directions it's going to
bounce off in a flat horizontal way and we call that
polarized light and if you have some sort of a
technology such as a polarized filter that selectively neutralizes that exact
horizontal light then you can eliminate it and you won't
see that whole reflection it's pretty wicked and just
to help show you guys what polarization really can do for your
vision and your visual experience through a pair of
sunglasses i grabbed a couple of my sunglasses
ones with polarization some without polarization
and i took them out to the road and onto the water so i could show you what it
really looks like
so hopefully with those little video clips there you're able to see the
difference of with and without that polarized
filter and one thing that's kind of cool is that polarized filters they are
oriented a certain direction to neutralize that horizontal reflecting
light but that means that you can rotate a
polarized filter and change the amount of light passing
through it so for example if you're wearing sunglasses
and you tilt your head to the side you are changing the orientation of that
polarized filter and then you can really see the
big difference so if you have ever if you ever see me
walking on the side of the road you'll probably
see me just being nerdy enough where i tilt my head side to side to side all
the time that's not just because i like to bob my
head in different angles it's because usually i'm wearing polarized sunglasses
and i just find it entertaining to watch the different reflections of light
coming off of a surface now maybe you're wondering hey do i really need
polarized sunglasses i don't think anybody absolutely needs polarized
sunglasses but if you are somebody who's very light sensitive or you're just
very big into sunglasses and seeing your best
maybe you're somebody with migraines and you have difficulties with
these bright reflections coming off of objects then yes
i think polarized sunglasses are probably the best choice for you
if you're somebody who also likes to drive a lot because the roads can get
wet or you can see a lot of glare coming off of windshields
and a wet road for example then yes polarized sunglasses are gonna also help
you a ton because it's gonna reduce all that extra glare
now one scenario where having polarized sunglasses is an
absolute must in my opinion is if you are looking for the best sunglasses
for fishing and that is because when you're on a large body of water and
you're fishing you're looking down directly into that water it's
usually at just the perfect angle to see a lot of reflections of the sky
or something above you and so if you have polarized filters on
you can eliminate that glare and see directly into the water
and you can even see fish and different weeds and rocks
everything and to simulate that effect i even filled a large
bowl of water and put my watch in there just in case
i had an idea if you were maybe out on just a low
shallow river and you dropped your watch or something in it and you couldn't
quite see where it was sunglasses with a polarized filter in
them if you rotate them the right way or just look
in there you can see my watch in this video
really easily as compared to if you didn't have the polarized filter on
there you just see a huge reflection of the sky
so yes if you are into fishing at all even in just
a little bit you're going on a big fishing trip or something like that
definitely pick up a pair of polarized sunglasses
yes polarized glasses are my personal favorite and i pretty much prefer to
wear them all the time but there are some
scenarios where you do not want them yes if you're fishing you want to have
them yes if you are somebody who's driving a lot you're on the road you see
a lot of wet roads you can see light bouncing off that flat
horizontal surface of asphalt maybe car windshields yes polarized lenses
polarized sunglasses are ideal for those situations
however if you are somebody such as an airline pilot if you're in the air force
maybe you are in the military or maybe you drive a ship or something and you're
looking at a lot of electronic dials then no a polarized pair of
sunglasses is probably not ideal for you at least
when you're using those electronic dials and that's
because if you are in something like a cockpit
your airline pilots their dials in front of them
in the cockpit are no longer just mechanical dials that go back and forth
they're usually made with a computer screen and something that a lot of
people don't know is that computer screens
have polarized filters in them and that's exactly why if i hold up this
polarized filter here for a camera and i rotate it just the right way you
can no longer see through it that's pretty wicked
right so i can kind of go non-polarized polarized non-polarized
polarized and that's because the polarized filter of the camera filter
here and the polarized filter in the computer
screen are polarized against each other and you
just can't see through them at all and that's why if you ever wear polarized
sunglasses and you pull up to like a gas station and you look at the electronic
dial that tells you how much fuel you're pumping into your car
you might not be able to see it and that's because the polarized filters in
different kind of computers and electronic screens
can negate each other and you can't really see it sometimes you can see this
in car radios sometimes on older phone screens it kind
of does depend on a few things now a good question i've gotten from
patients and viewers is is there a difference of polarization
from one company to the next in terms of different brands of sunglasses
and honestly i don't know i've looked into it and i'm not
really sure if there's a difference in technology of one polarized filter
versus another certainly there's a difference in quality of glass or
plastic of how your sunglasses are made or what
type of brand made the filter for your camera
polarized filter but in terms of the how the polarization
is made i don't think that makes a difference
but i do pass that off to you if you know a little bit more
about how polarized filters are made and if there is really a difference
of polarization effect of one company brand versus another
i want to know because i just nerdy like that i like to know those things
but thankfully polarization technology is available in sunglasses and honestly
i think it's pretty cool if you haven't tried them recommend it hey i hope you
liked today's video if so smash that like button for me subscribe if you have
not otherwise keep an eye on it we'll talk
to you soon
you