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Self Darkening Eyeglass Lenses  
User currently offlineLionel From Canada, joined Dec 2000, 391 posts, RR: 2
Posted (8 years 7 months 2 weeks 2 days 3 hours ago) and read 3173 times:

As I have to buy new eyeglasses a question according to the sun protection came up.

Has anybody experiances in self darkening eyeglass lenses? What are the pros and cons against the common sunglass clip?

I am not sure whats better so any comments are appreciated!

21 replies: All unread, jump to last
 
User currently offlineCosec59 From , joined Dec 1969, posts, RR:
Reply 1, posted (8 years 7 months 2 weeks 2 days 2 hours ago) and read 3172 times:

I use the reactolite lenses. I find the only problem is the length of time they take to clear once back indoors or in the car

User currently offlineLionel From Canada, joined Dec 2000, 391 posts, RR: 2
Reply 2, posted (8 years 7 months 2 weeks 2 days 2 hours ago) and read 3166 times:

How long does it take till they clear again completely?

User currently offlineCosec59 From , joined Dec 1969, posts, RR:
Reply 3, posted (8 years 7 months 2 weeks 2 days 2 hours ago) and read 3165 times:

Quoting Lionel (Reply 2):
How long does it take till they clear again completely?

Mine take a good 3-4 minutes


User currently offlineKBOS From United States of America, joined Nov 2003, 429 posts, RR: 0
Reply 4, posted (8 years 7 months 2 weeks 2 days 1 hour ago) and read 3145 times:

Another thing to consider is if you are in a car, the windshield blocks the UV rays the glasses need to change. Even with that, I have very light sensitive eyes and have never had a problem with them.


I don't care if the sun don't shine, I do my drinkin in the evening time when I'm in Rhode Island
User currently offlineGilligan From , joined Dec 1969, posts, RR:
Reply 5, posted (8 years 7 months 2 weeks 2 days 1 hour ago) and read 3138 times:

I have the transition lenses and will never go back. Used to have a pair of sunglasses but kept misplacing them. Tried the clip ons but never really liked the way they looked or felt. As to reaction time, they darken almost immediately. My old ones did take fairly long to lighten up once indoors but my latest pair lightens up within a minute or two of being out of the sun.

Quoting KBOS (Reply 4):
Another thing to consider is if you are in a car, the windshield blocks the UV rays the glasses need to change

They do need direct sunlight to change. If mine are not getting dark enough I just take them off and hold them farther up the dash in direct sunlight for a minute, that usually does the trick.


User currently offlineMirrodie From United States of America, joined Apr 2000, 7444 posts, RR: 62
Reply 6, posted (8 years 7 months 2 weeks 2 days 1 hour ago) and read 3138 times:
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Lionel, you are referring to photochromic lenses.

They are great lenses for suiong in and around the house, going in and out.

But not a great driving lens. So I have polaroid lenses for driving.



pros of a photochromic lens:

changes according to light hitting it
allows 2 functions in one: UV protection and vision


Cons: not great inside a car.



pros of a clip-on:

.....

cons of a clip: extra weight on your nose.



Forum moderator 2001-2010; He's a pedantic, pontificating, pretentious bastard, a belligerent old fart, a worthless st
User currently offlineGilligan From , joined Dec 1969, posts, RR:
Reply 7, posted (8 years 7 months 2 weeks 1 day 22 hours ago) and read 3111 times:

Quoting Mirrodie (Reply 6):
But not a great driving lens. So I have polaroid lenses for driving.

Have to disagree, had the anti glare coating applied and they are just as good or better than any sunglasses I've ever owned.


User currently offlineGary2880 From , joined Dec 1969, posts, RR:
Reply 8, posted (8 years 7 months 2 weeks 1 day 21 hours ago) and read 3098 times:

Quoting Lionel (Thread starter):

reaction lenses are the worst pair of glasses i have ever had, from my point of view.

i loved them, they were great... thin stylish rimless automatically turned into shades.

and then i realized one day while i was out at the airport in blazing sun. i remembered i was a photographer...

without glasses im blind as a bat.

trying to expose a photograph correctly through tinted windows! not easy!


User currently offlineMirrodie From United States of America, joined Apr 2000, 7444 posts, RR: 62
Reply 9, posted (8 years 7 months 2 weeks 1 day 21 hours ago) and read 3092 times:
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Quoting Gilligan (Reply 8):
Have to disagree, had the anti glare coating applied and they are just as good or better than any sunglasses I've ever owned.

Gilligan, Im an eyedoctor. First thing is I dont want anyone miseducated or confused.

Photochromic lenses do not change well behind a windshield (unless you are driving a much older vehicle.) The most darkening change you will get is 15% at most behind a windshield


Now, perhaps you feel you are getting protection and comfort from the antiglare coat. And that may make the glasses that much more comfortable.

But that will not darken the lens. The lenses being asked about do not darken in a car.


AR coatings are great. My fav sunglasses are poloroid lenses with the AR coat.



Forum moderator 2001-2010; He's a pedantic, pontificating, pretentious bastard, a belligerent old fart, a worthless st
User currently offlineN1120A From United States of America, joined Dec 2003, 26595 posts, RR: 75
Reply 10, posted (8 years 7 months 2 weeks 1 day 20 hours ago) and read 3078 times:

Or you could do what my friend did and buy a pair of really expensive sunglasses as motivation to wear contacts.


Mangeons les French fries, mais surtout pratiquons avec fierte le French kiss
User currently offlineJafa39 From , joined Dec 1969, posts, RR:
Reply 11, posted (8 years 7 months 2 weeks 1 day 19 hours ago) and read 3063 times:

Advantages of reactolite over a clip-on is you don't go around looking like your own grandfather!

The Black ones are quicker to react than the brown and the really cool thing is, they go dark in snow and make the snow look green!

I've used them for 25 years, would highly recommend them!


User currently offlineGilligan From , joined Dec 1969, posts, RR:
Reply 12, posted (8 years 7 months 2 weeks 1 day 14 hours ago) and read 3040 times:

Quoting Mirrodie (Reply 9):
Gilligan, Im an eyedoctor. First thing is I dont want anyone miseducated or confused.

Ok, I'll accept the fact you're an eye doctor. That being said....

Quoting Lionel (Thread starter):
Has anybody experiances in self darkening eyeglass lenses?



Quoting Gilligan (Reply 5):
I have the transition lenses and will never go back.

He asked generically, I answered specifically. I understand what you are saying but my honest answer is that in both my 2001 F150 Supercrew and in my wifes 2003 Taraus, all I have to do if the lenses are not dark enough already is hold them up on the dash in full sunlight for about a minute. They darken right up with no problem. They are transition lenses and have never given me a problem in that regard. This is also true for 2005 rental cars that I have driven in the past year.


User currently offlineYOWza From Canada, joined Jul 2005, 4900 posts, RR: 15
Reply 13, posted (8 years 7 months 2 weeks 1 day 13 hours ago) and read 3028 times:

Do not get photochromic lenses. You will look like a plonker. My 2c.

YOWza



12A whenever possible.
User currently offlineJafa39 From , joined Dec 1969, posts, RR:
Reply 14, posted (8 years 7 months 2 weeks 1 day 10 hours ago) and read 3008 times:

Quoting YOWza (Reply 13):
Do not get photochromic lenses. You will look like a plonker.

You're just jealous because Canada only gets 1 day of sun a year!!  Smile


User currently offlineN1120A From United States of America, joined Dec 2003, 26595 posts, RR: 75
Reply 15, posted (8 years 7 months 2 weeks 1 day 9 hours ago) and read 3001 times:

Quoting Jafa39 (Reply 14):
You're just jealous because Canada only gets 1 day of sun a year!!

Actually, they get plenty of sun, it just doesn't warm anything up.



Mangeons les French fries, mais surtout pratiquons avec fierte le French kiss
User currently offlineYOWza From Canada, joined Jul 2005, 4900 posts, RR: 15
Reply 16, posted (8 years 7 months 2 weeks 1 day 8 hours ago) and read 2992 times:

Quoting Jafa39 (Reply 14):
You're just jealous because Canada only gets 1 day of sun a year!! Smile



Quoting N1120A (Reply 15):
Actually, they get plenty of sun, it just doesn't warm anything up.

We do get sun. Not much warmth but sun for sure. As for being in Canada, well I manage to escape a lot for work  Wink

YOWza



12A whenever possible.
User currently offlineRedDragon From United Kingdom, joined Jul 2004, 1135 posts, RR: 6
Reply 17, posted (8 years 7 months 2 weeks 1 day 2 hours ago) and read 2979 times:

I'm thinking about ditching the photochromatic lenses when I get a new prescription. Mine take seemingly forever to lighten up when I go indoors on a summer's day - to the extent that I have to take them off for a good few minutes so I can actually see anything. At their darkest, they're not actually all that dark, and I just don't feel they're worth the money.

Bah.


User currently offlineMirrodie From United States of America, joined Apr 2000, 7444 posts, RR: 62
Reply 18, posted (8 years 7 months 2 weeks 1 day 2 hours ago) and read 2974 times:
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Gilligan, thats very intersting about your late model cars.

But now, here is my other question...say its sunny day and you need your glasses for driving. And lets say transitions take roughly 2 minutes to go back to clear again (although the speed at which the lenses react/darekn/lighten is depend also on temperature.)

In terms of practicality, but lets say you are driving, lets say 30-40 miles and its sunny out. So you have to remove your glasses every 2-3 minutes to darken them? personally I dont find that practical.

That is why I personally dont advise them and instead, I recommend a fixed tint or polaroid for my pilots and drivers and boaters, in particular....anyone needing good driving lenses...

otherwise photochromics are nice in/out of the house.
but YMMV,  Wink



Forum moderator 2001-2010; He's a pedantic, pontificating, pretentious bastard, a belligerent old fart, a worthless st
User currently offlineGilligan From , joined Dec 1969, posts, RR:
Reply 19, posted (8 years 7 months 2 weeks 1 day 2 hours ago) and read 2973 times:

Quoting Mirrodie (Reply 18):
I dont find that practical

Maybe I'm the lucky one millionth customer. Once they go dark they stay dark, or at least it seems that way. I only have to do it once and only rarely do I seem to have to do it again. It's been that way on my last 3 pairs and is the major reason I don't mind shelling out the bucks to get them.


User currently offlineJafa39 From , joined Dec 1969, posts, RR:
Reply 20, posted (8 years 7 months 2 weeks 15 hours ago) and read 2959 times:

Quoting Gilligan (Reply 19):
Maybe I'm the lucky one millionth customer.

Mine work so well I don't even notice them, if they go dark in the car they'll stay that way, I don't have problems coming indoors from bright sunlight and they go nice and dark too, maybe I have exceptional night vision!!  Smile


User currently offlineLeezyjet From United Kingdom, joined Oct 2001, 4042 posts, RR: 53
Reply 21, posted (8 years 7 months 1 week 6 days 15 hours ago) and read 2941 times:

I have them too, and it's great that they go dark outside, but when you go inside and they don't go clear straight away then you look like a complete d!ck walking around in them.

When you are wearing them, you forget how dark they actually are to other people. I've had many people comment on why I'm wearing sunglasses inside until I explain to them.

Maybe Mirrodie can answer this, but don't the lenses only have a certain lifespan ?. I was under the impression that when they are getting towards the end of that lifespan, the lenses will take alot longer to react which is a sign that they need replacing - as mine are doing now.

 Smile



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