Gilligan From , joined Dec 1969, posts, RR:
Reply 5, posted (10 years 1 month 4 weeks 1 day 7 hours ago) and read 3634 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.
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.
RedDragon From United Kingdom, joined Jul 2004, 1135 posts, RR: 6
Reply 17, posted (10 years 1 month 4 weeks 8 hours ago) and read 3475 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.
Mirrodie From United States of America, joined Apr 2000, 7459 posts, RR: 60
Reply 18, posted (10 years 1 month 4 weeks 8 hours ago) and read 3470 times:
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.
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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.
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!!
Leezyjet From United Kingdom, joined Oct 2001, 4053 posts, RR: 52
Reply 21, posted (10 years 1 month 3 weeks 5 days 20 hours ago) and read 3437 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.
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