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Medical Forum / General / Vision / March 2007photochromatic lenses
Are there any photochromatic lenses that are useful both indoors and outdoors as sunglasses? I understand that they won't work in a car, but from everything I have read, they don't work as sunglasses either, so what's the point?  SignatureLynne Photochromic lenses work quite well indoors and out, and I have no idea where you heard they don't work as a sunglass, except, as you say in an enclosed vehicle. The main thing is they are slow to lighten (7-10 min) and don't get as dark as some people want. If you want a very dark sunglass, esp in a car, they are probably not for you. They are pretty much 100% UV protective at any state of darkening. >Are there any photochromatic lenses that are useful both indoors and >outdoors as sunglasses? I understand that they won't work in a car, but >from everything I have read, they don't work as sunglasses either, so >what's the point? > > > Photochromic lenses work quite well indoors and out, and I have no idea > where you heard they don't work as a sunglass, except, as you say in an > enclosed vehicle. The main thing is they are slow to lighten (7-10 min) > and don't get as dark as some people want. If you want a very dark > sunglass, esp in a car, they are probably not for you. They are pretty > much 100% UV protective at any state of darkening. If they are useful as sunglasses, why does the manufacturer of Transistions Lenses state they are not a replacement for sunglasses? SignatureLynne >>Photochromic lenses work quite well indoors and out, and I have no idea >>where you heard they don't work as a sunglass, except, as you say in an [quoted text clipped - 5 lines] > If they are useful as sunglasses, why does the manufacturer of Transistions > Lenses state they are not a replacement for sunglasses? I suppose they don't want you to think they are a good driving sunglass, unless you are driving a convertible with the top down. Funny, because they seem to have no problem with their commercial that (falsely) shows them lightening up in a few seconds. But in full direct sun, they are fine for most people. Oh and they are not polarized, which the best sunglasses are for many people. > Are there any photochromatic lenses that are useful both indoors and > outdoors as sunglasses? I understand that they won't work in a car, but > from everything I have read, they don't work as sunglasses either, so > what's the point? They get darker in the sun and they get lighter indoors. They work as promised. The most common gripes are they don't change enough, or fast enough. In another 5 or 10 years and there'll be a little rheostat on the temple so you can dial up your preference, all the way to opaque. I also think there'll be a slide on the other temple, a little hydraulic pump to bulge the lenses and give you a near add. -MT >They get darker in the sun and they get lighter indoors. They work as >promised. > Unless you consider that TV commercial that shows them lightening fully in a couple of seconds to be a "promise". I do, and think we all ought to do a class action suit to recover all the professional time we take explaining that blatant lie to the patients... > Unless you consider that TV commercial that shows them lightening fully > in a couple of seconds to be a "promise". I do, and think we all ought > to do a class action suit to recover all the professional time we take > explaining that blatant lie to the patients... I do not take tv commercials at face value, though I'm sure most consumers do. I am just looking for a pair of glasses that will protect my very light sensitive eyes (due to uveitis) in even the brightest sunlight--and not just from UV rays, but from the pain of bright light. I can keep a sun clip in my car for driving, but if I am outdoors in the sun I want the lenses to be DARK, even if it is hot outside. Unless the information I have read is outdated, they don't get very dark, especially not in the heat. Is that incorrect? Are there any brands that are better than others? By "better" I mean clear indoors and very dark outdoors. Also, are there specific types of lenses (glass, poly, etc) that perform better? SignatureLynne > > [quoted text clipped - 18 lines] > > OK then you do indeed need "Dark" sunglasses, as in dark all the time. None of the transitions will work well for you, unless you wear your clip over the transitions base lens, which lots of my patients do. However, IMO the very best would be something like a Maui Jim Rx sun lens. They use 8 base (for some extra wrap around) poly (and some glass) lenses with double gradient mirrors on the front and AR on the inside. Very spendy but very nice. I did a single vision pair for a vsp patient the other day and her share was around $300 of the $400. > OK then you do indeed need "Dark" sunglasses, as in dark all the time. > None of the transitions will work well for you, unless you wear your [quoted text clipped - 4 lines] > inside. Very spendy but very nice. I did a single vision pair for a vsp > patient the other day and her share was around $300 of the $400. That's what I figured... I was hoping to get away from carrying two pairs of glasses all the time. I may get some transistions (or other brand) anyway, for those times when I have to be outdoors unexpectantly or briefly. Which brand gets the darkest and is still clear indoors? SignatureLynne Which brand gets the darkest and is still clear indoors? The only ones like that are Transitions in plastic or Photogrey in glass, and the glass still have a moderate tint indoors, whereas the plastic transitions are just about clear. All the ones that get darker have substantial tint indoors. > Which brand gets the darkest and is still clear indoors? > > The only ones like that are Transitions in plastic or Photogrey in > glass, and the glass still have a moderate tint indoors, whereas the > plastic transitions are just about clear. All the ones that get darker > have substantial tint indoors. I was happy with my old glass Photogray lenses -- they got reasonably dark outside and were just slightly darker than clear inside, certainly not a problem. FWIW, I also used them skiing and riding my motorcycle. They were MUCH better than the plastic Transitions lenses, which were effectively worthless. Rite-Aid sells some pretty neat-looking over-glasses for $20. 2 colors and 3 sizes. Check those out before spending more money. SignatureCheers, Bev /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\ Nobody needs to speak on behalf of idiots, they manage to speak entirely too much for themselves already. > They were MUCH better than the plastic Transitions lenses, which were > effectively worthless. In all fairness, the new Transitions are way better than the old ones, and they last longer. The original Transitions were pretty worthless. Photogrey glass, of course, has a host of potential problems (weight, safety, and that awful greenish yellow tint...), but there are a few of you diehards still wearing them... >> They were MUCH better than the plastic Transitions lenses, which were >> effectively worthless. [quoted text clipped - 5 lines] > safety, and that awful greenish yellow tint...), but there are a few of > you diehards still wearing them... "Heavy" is the killer, along with "expensive". I never broke a lens, even when I broke the frame the lens was in. SignatureCheers, Bev ===================================== "Incontinence hotline, can you hold?" |
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