in this video I'm gonna be trying on and reviewing the new transition lenses the
transitions signature gen 8, going over the pros and the cons in today's Frame
Friday let's take a look! hello and welcome I am doctor Joseph Allen here
from the doctor eye health show helping you learn about the eyes vision and
finding the best vision products and on this channel we do a lot of educational
videos about the eyes as well as more product reviews around eyewear frames
glasses lenses and even contact lenses and other things like that so if you
like learning about the eyes and take care of your vision then hit that
subscribe button down below and turn on notifications so that you don't miss any
of the future videos so today on Frame Friday I wanted to review one of my
favorite glasses lenses and this is the new transitions signature generation 8
lens now not everybody likes transition lenses but I did want to go over at
least some of the pros and cons of these new high-tech lenses. so first of all
what are transition lenses? transitions are famous as the color changing lens
where the lenses are clear indoors and then when you go outside they turn into
sunglasses now at its heart transition lenses are actually photochromic lenses
these are lenses that actually have a special dye built into the lens
historically it was made of something called silver halide, now with the new
technology I'm not sure if that's actually what's in it anymore
but it actually is a type of dye that activates when it's exposed to UV light
such as sunlight and this actually turns the dyed dark so when you go outside the
dye actually changes into these dark sunglasses and then when you come inside
UV lights not there anymore so it turns clear again now when you're indoors the
lenses are virtually almost a hundred percent clear if you're extremely
perceptive you can actually tell that they might have a little bit of a tint I
mean it's so slight it's almost impossible to see I think that most
people probably don't notice that even indoors there's a slight yellowish grey
tint to them I have to really check on it to even perceive that it's there now
a great benefit of these lenses is that they do block out a hundred percent of
UVA and UVB light so they actually do protect the eyes from the Sun not just
turning dark and reducing light sensitivity they actually have a
protective effect plus they actually block about 20
scent of high-energy blue wavelength light that's the light that potentially
may actually be affecting your sleep cycle and causing other eye problems and
if you want to learn more about blue light I have a whole series on blue
light and I'll hook that up here and YouTube card up above as well as in the
description below if you want to check that out now the new gen 8 lenses
actually have new technology in them they actually incorporated kind of
nanoparticle technology to make the crystal dye even smaller within the lens
and that allows the lens to act a little bit faster going in and going outdoors
as well as making the lens turn even darker and that's actually probably one
of my favorite things is that the lenses now get extremely dark they're just as
dark as in my regular pair of sunglasses so this is really important to me
because I'm pretty light sensitive and if you're somebody who you know if
you're wearing the regular kind of older photochromic lenses they just never seem
to cut quite as dark and again because of the small lens particles the lens
actually turn and change darker about 30% faster than the previous lens design
actually from the time I leave the office by the time I get out to my car
the lenses have already turned completely dark it's pretty amazing and
at the same time these lenses turn clear a whole lot faster in order for them to
deactivate when you come indoors it think technically it's about three
minutes faster than its predecessor the generation 7 and it's around 4 minutes
and 40 seconds I think it's been clocked to be a hundred percent back to clear
from being outdoors or in the UV light now while it says 4 minutes and 40
seconds to be that fully clear I noticed that when I wear them from about the
two-minute mark to that 4 minute and 40 second mark I can't really tell a
difference you've had transition lenses before and bothered by how slow it took
them to go back clear these go a whole lot faster now that we've gone over some
of the pros of transition lenses let's go over some of the downsides and it's
true that not everybody loves transition lenses some people love them some people
don't one of the threes ins why people don't
tend to like these lenses is because they do not activate really well when in
the car you see the windshield limited car actually has UV light protection
built into it so you can be limiting a lot of the light that could be
potentially activating these lenses the only light that would be actually
activating them a little would be any stray light coming in
through the driver's-side window or maybe bouncing off the mirrors or
something like that so I know a lot of other people who will actually either
have a set of clip ons or maybe another pair of prescription sunglasses that
they'll change to while driving another time when transition lenses are not the
favorite are for people who take a lot of photos outside I've actually had
several different brides come in and they're kind of frustrated that mom was
wearing her transitions glasses during their outside wedding photos and another
thing is that these lenses are temperature dependent so if you're
somebody who lives in a warmer climate these lenses do tend to transition a lot
faster in a warmer temperature but that also makes the lenses not quite get as
dark but on the reverse side if you're somebody who's lives in a really cold
climate like myself I live here in Minnesota when it gets below zero for a
lot of the time of the year these lenses are likely gonna get even darker and it
called tant cold climate and they actually change a little bit slower and
if you curious about the price of this new transitions lens it will vary
depending on what other features you include when you purchase your eyewear
you of course can check with your local optical or you can look for additional
information in the links I've included in the description below so why ask
question of the day have you tried transition lenses before what are some
of your thoughts do you like them do you not what are other pros and cons go
ahead and comment in this section below hey if you got some value out of this
video hit that like button for me to subscribe it for new otherwise keep an
eye on it we'll talk to you soon