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Medical Forum / General / Vision / December 2006Any experience with Drivewear lenses?
I was just surfing around the web and I came across a lense called "drivewear". They're polarized transition lenses that darken in the car and really supposed to cut down on the glare. As I am very susceptable to glare while driving (and I have fetal cataracts), these sound like they might be good deal for me. I'm really surprised I haven't heard of these before. Anybody here have any experience with them? >I was just surfing around the web and I came across a lense called > "drivewear". They're polarized transition lenses that darken in the car > and really supposed to cut down on the glare. As I am very susceptable > to glare while driving (and I have fetal cataracts), these sound like > they might be good deal for me. There are lots of different types of "glare." Polarized sun lenses will cut reflected glare dramatically, but they are always dark to some extent, and adding photochromic qualities can only darken them beyond that, so you won't find it practical at night. More importantly, your glare isn't reflected from horizontal surfaces like water and windshields. Polarized lenses are great for that, but no better than plain gray for other things. Your glare is diffusion, light scatter from opacities in the media. Your glare doesn't consist of polarized light, so it couldn't be filtered even if it _did_ pass through the spectacle lens. Light scatter *can* favor blue wavelengths, so you might check and see what *yellow* lenses do for you. Spend a buck on a yellow plastic report cover and try it in different situations. Unlike polarizing, yellow lenses ("shooter's glasses," "Blue Blockers") might be practical at night. For daylight driving, brown polarized clip-ons make sense. Drivewear is a good, name-brand lens, made by Younger. It's excellent for what it does, but call around and check the price.. :) -MT, OD > Drivewear is a good, name-brand lens, made by Younger. It's excellent for > what it does, but call around and check the price.. :) The Drivewear website says it uses Transitions lenses that darken to visible light. I thought that was great, but on the Transitions website it says it lenses darken only to UV light. I would love glasses that darken in the car, but am now rather skeptical. Can you tell me what is going on here? >> Drivewear is a good, name-brand lens, made by Younger. It's excellent for >> what it does, but call around and check the price.. :) [quoted text clipped - 5 lines] > I would love glasses that darken in the car, but am now rather skeptical. > Can you tell me what is going on here? Yes, UV is what causes the lens to darken. It doesn't work that well inside a car as the windows are filtering UV to some degree. Also, these lenses don't become completely tint free in low light situations in my experience so they're not the greatest for night driving either. > >I was just surfing around the web and I came across a lense called > > "drivewear". They're polarized transition lenses that darken in the car [quoted text clipped - 29 lines] > > -MT, OD I'm a little curious about your response. I'm over 50 now, and my "fetal" cataracts didn't noticably start affecting my sight until about 6 years ago. According to my eye doc, that's because the normal aging of my lenses has started. If I understand this correctly, it means there's some yellowing going on that compounds what I was born with. Now you suggest that a yellow tint in my specs might help with my night vision. I'm definitely going to do some tests with this, but I'm trying to get my hands around why this might help. I'm not saying that I doubt what you say, I'm just curious about why this is. I'm also curious about using brown for sunglasses. All my adult life I've used grey lenses, because I'd read that they're supposed to be the best for color representation. I've never considered brown lenses, but if you're right they might work better for me than I'm game to try them. By the way, my doc said that she doesn't think I'll need to have may cataracts "taken care of" for at least another 5-10 years. I'd really like to find a low tech solution that will make seeing more comfortable for me until I get my natural lenses replaced. > I'm a little curious about your response. I'm over 50 now, and my > "fetal" cataracts didn't noticably start affecting my sight until about > 6 years ago. According to my eye doc, that's because the normal aging > of my lenses has started. If I understand this correctly, it means > there's some yellowing going on that compounds what I was born with. That and your pupils might be getting smaller. > Now you suggest that a yellow tint in my specs might help with my night > vision. I'm definitely going to do some tests with this, but I'm trying > to get my hands around why this might help. I'm not saying that I doubt > what you say, I'm just curious about why this is. Some people claim better contrast sensitivity with a yellow tint. I'm skeptical of this except under conditions where there's a lot of blue light coming in and distracting you, which is blocked by the yellow. > I'm also curious about using brown for sunglasses. All my adult life > I've used grey lenses, because I'd read that they're supposed to be the > best for color representation. I've never considered brown lenses, but > if you're right they might work better for me than I'm game to try > them. Same idea. yellow/orange/brown tend to block blue. They do indeed alter color perception. > By the way, my doc said that she doesn't think I'll need to have may > cataracts "taken care of" for at least another 5-10 years. I'd really > like to find a low tech solution that will make seeing more comfortable > for me until I get my natural lenses replaced. If you are hyperopic, sooner is better than later. If myopic, ok wait a while due to risk of retinal detachment, a risk pretty much nonexistent in hyperopes. I'm skeptical of a doc who prodicts that far out. Is she an HMO doc? w.stacy, o.d. > I'm a little curious about your response. I'm over 50 now, Oops. I was assuming you were younger. > and my > "fetal" cataracts didn't noticably start affecting my sight until about > 6 years ago. Fetal cataracts don't change. It would be some other change in your lens that you noticed six years ago. The yellowing is nature's way of blocking blue and ultraviolet, and if you already have that going on, yellow (or brown) lenses won't contribute much, but it's cheap and easy to find out. -MT > > I'm a little curious about your response. I'm over 50 now, > [quoted text clipped - 12 lines] > > -MT Most people assume I'm younger because I don't act my age ;). I understand that fetal cataracts don't change with age, but my doc's assertion is that the normal aging of my lenses amplified the problem and made me notice it more. Also, my vision was fine uncorrected until I hit my 30s. I'm going to see if I can find a yellow report cover, or maybe even cheap yellow clipons and do some experimenting. >>I was just surfing around the web and I came across a lense called >> "drivewear". They're polarized transition lenses that darken in the car [quoted text clipped - 11 lines] >water and windshields. Polarized lenses are great for that, but no better >than plain gray for other things. I live in New York state now -- but I grew up in Texas. Driving directly into a low sun, an hour or so from setting into the surface of the highway(!), as I recall, was really *REALLY* painful. Now, I forget whether for sure polarized glasses helped (more than non-polarized sunglasses) reduced the reflection, but I think they did. (Or maybe it was when the sun was off to the side, at an angle, eg 30 degrees -- I forget the physics). (However, FOR SURE it made clouds stand out in the sky -- that scattering (that *caused* the blue in the sky?) was very susceptible to polarized lenses!) David > (However, FOR SURE it made clouds stand out in the sky -- that > scattering (that *caused* the blue in the sky?) was very > susceptible to polarized lenses!) Skylight (scatter) *is* polarized, to some degree. Looking through polarized lenses, the sky is different shades depending on whether you look parallel or perpendicular to the direction of sunlight. I read that bees use the phenomenon to navigate. -MT >I was just surfing around the web and I came across a lense called > "drivewear". They're polarized transition lenses that darken in the car > and really supposed to cut down on the glare. As I am very susceptable > to glare while driving (and I have fetal cataracts), these sound like > they might be good deal for me. I wasted $$$$ on those transition lenses in the past. They don't get dark enough in the car unless you drive a convertible. >I was just surfing around the web and I came across a lense called >"drivewear". They're polarized transition lenses that darken in the car [quoted text clipped - 4 lines] >I'm really surprised I haven't heard of these before. Anybody here have >any experience with them? They're new. Info below is from another forum. I believe it's accurate. "Unactivated yellow/green polarizer 37% light transmission. Visible light activation copper color behind windshield ~25%. UV light activation outdoors dark reddish brown ~10%" These are sunglass lenses, not everyday glasses, and will change color and light transmission due to both visible and UV light. Robert Martellaro ~~~~~~~~~~~~~~~~~~ Optician/Owner Roberts Optical Wauwatosa Wi. ~~~~~~~~~~~~~~~~~~ "An expert is a person who has made all the mistakes that can be made in a very narrow field." - Niels Bohr
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