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FDA Approves First Contact Lenses That Turn Dark In Bright Sunlight (interestingengineering.com)
The first photochromic contact lenses have been approved by the FDA. "A unique additive will automatically darken the lenses when they're exposed to bright light," reports Interesting Engineering, citing a FDA statement. "The lenses will clear up whenever they're back in normal or darker lighting conditions." From the report: "This contact lens is the first of its kind to incorporate the same technology that is used in eyeglasses that automatically darken in the sun," said Malvina Eydelman. Eydelman serves as director of the division of ophthalmic, and ear, nose and throat devices at the FDA's Center for Devices and Radiological Health. The FDA approved the technology after extensive trials and clinical studies. One study had 24 wearers use the contacts while driving in both daytime and nighttime settings. The FDA found that there were no problems with driving performance or issues with vision while wearing those contact lenses. In total, over 1,000 patients were involved in the various studies conducted by the FDA. According to current plans, these photochromic lenses should be available for those needing them by the first half of 2019.
First reading of "FDA Approves First Contact Lenses That Turn Dark Into Bright Sunlight" was incorrect.
But I want contact lenses that compress the EM spectrum from UV to microwaves into visual spectrum. So you can see IR, and the world at night is usually illuminated with UV. So outside dark would be UV illuminated, and indoor dark would be IR illuminated. Night vision in contact lenses. When do I get that?
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But will they turn dark in the face of danger?
My guess is that this is a Russian troll too, or an American moron. What the left seem to not realize is that there is something far more valuable for Russia, as a competitor to the US, than a friendly president... it's the whole of the US at each other's throats and the collapse of our political system. That my friends is the long term destabilization that will have Russia back on top on the international arena. They don't care about Trump... they'd much rather we were fighting each other. And we're playing into their hands.
Imagine driving during the day and entering a dark tunnel with these on. When you do it with sun glasses on you immediately rip them off so you don't crash. There are other less extreme high contrast situations where these might turn dark when you want to see in the shadows. I can't see how these would be allowed for safety reasons.
Doesn't matter. They won't darken at all in a car. The react to UV and the windshield blocks UV. This is the same way that photosensitive eyeglasses work. If, like me, you only wear glasses when driving, the photosensitivity is completely useless.
Actually, the photosensitive glasses can react to UV light. All the ones that I used / see my friends use does.
But google results says "Some photochromic lenses also react to visible light" (eg https://www.essilorindia.com/learn-about-vision/all-about-lenses/lenses-for-glasses/photochromic-lenses ) so may be that's not as ubiquitous as I thought.
Don't know which type the contact lenses would be tho.
I don't know about you, but I can't wait until everyone is walking around with soulless black eyes just like Zuckerbot.
"Tell me doctor, with all of your defenses, are there any provisions for an attack by killer bees?"
Being out in bright sunlight and seeing those lens wearers with weird blanked out eyes. Who will be the first one shot by some redneck with the excuse "Ah thort they was'n alien or a zombie, so I blasted that there creepy-eyed f*ck*r"
I've owned two pairs. Neither reacted to visible light. I even asked about this last time and the shop didn't have any that reacted to visible light.
I'd like something I read in a science fiction book - contacts or glasses that block direct sunlight.
The glasses know where my pupils are, and where the sun is. Each lens automatically draws an opaque disk onto itself, between the eye's pupil the sun. If I turn my head, each lens draws its disk in a new location, blocking the direct sunlight from entering my eye's pupil.
Those glasses would be handy on a non-hazy day, when I'm driving towards the sun.
I gave contacts a try, but I just could not tolerate sticking myself in the eye to put them in. And besides, at the time they were not very good at correcting both nearsightedness and astigmatism at the same time. Add to that the need for bifocals for close reading. Discovered that when I had to start taking my glasses off to read small print.
Anyway, the permanent imprints on my nose from 45+ years of wearing spectacles will remain until I die.
Time is what keeps everything from happening all at once.
Transition lenses have never been on contact lenses before this.
"First they came for the slanderers and i said nothing."
Drive like a pirate! Arrr!
The silver oxide that turns dark will affect your eyelids and turn them blue.
at night. As I've gotten older I'm hyper sensitive to light and my vision quality's gone down. The two combined can sometimes almost completely blind me at night (between folks lights and already less than perfect vision). I'm guessing by my mid-50s I won't be able to drive at night...
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Doesn't matter. They won't darken at all in a car. The react to UV and the windshield blocks UV.
I found this out (unfortunately) after the single time I bought photochromic eyeglass lenses.
It’s the situation where auto-darkening lenses would come in the handiest, but they don’t work. I guess I should’ve done my homework beforehand.
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afaik and im not a doctor, your eyes will slowly lose their own ability to adapt to light/dark if you use glasses or lenses like this.
I tried those autochange lenses on eye glasses. It's annoying like indoor in movie theat(re/er)s, meeting rooms, etc. I'd rather control them myself with external shades.
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I find that when wearing sunglasses if I drive into a tunnel I have to take them off. This even applies to the light sensitive sunglasses that took quite a long time to lighten up - much longer than most tunnels. Unless these react much quicker than the old ones I would see this as a problem.
I'm only far sighted in my right eye, so I just wear one contact. For a brief moment I thought "Oh this sounds like it might be nice." And then realized this wouldn't go well for me (unless I started wearing a sun monocle?).
I wonder if it's a regional thing. Here in HK, most of the photochromatic lenses uses a brand (?) called Transitions which claims to " responds to both UV light and natural (visible, clear or white) light, so they are able to darken in the car ".
They have those literally everywhere people spend more than a couple bucks on glasses, so GP just walked into a store full of morons. Sadly, morons can easily get retail jobs if they are attractive.
"You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
cool that we can do this, but why? can't you just wear sunglasses, i bet that's a cheaper option.
On a long enough timeline, the survival rate for everyone drops to zero.
It may be a bit off-putting to see someone's irises turn black, no?
They must have changed their coating since I bought mine, because I have Transitions and my glasses do not darken in the car.
That is exactly why I don't bother with transition glasses. The main time I need sunglasses is when I am driving, exactly the condition when they don't work. If I had kept with a convertible they would be fine. Also where I live, if I were to explore the outdoors, I would be in the forest where it is rather shady.
If something is so important that you feel the need to post it on the internet... It probably isn't that important.
Contact Lenses are primarily for vanity purposes. So you can correct your vision without the need of noticeable glasses.
However having your eyes turn black when it is light outside will make you look rather odd.
Sunglasses make you look cool.
Black contact lenses make you look like you are on drugs or something is wrong with you.
If something is so important that you feel the need to post it on the internet... It probably isn't that important.
Certain situations don't accommodate such action well.
I first got glasses that did this in the 70's. I was a 2-way radio tech at the time. I'd get into a trunk of some cop car where the radio was, it was fairly dark, and because the car was outside in the sun, my glasses were dark and I couldn't see squat about what I was doing. Got rid of such glasses at the next prescription change. Contacts might be a little harder to change out for clear ones than glasses.
I want Trump shot into the sun. I'm not pro-Trump, I'm anti-Trump. The reason I'm opposing your bullshit is because it is THE LEAST EFFECTIVE WAY TO TAKE TRUMP DOWN. Plus, 'treason' is such an outdated mindset that has nothing to do with the kind of real threats that exist today.
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If this is a legitimate problem then you have a very poorly designed lighting system in your tunnel.
Also you do realise these aren't your pitch black stare at the sun welding glasses right? They only have a limited range of tonal variation.
Drive like a pirate! Arrr!
Which was also one of the reasons why some pirates wore eyepatch.
(note because of wounds, but to keep the covered eye sensitive in the darkness as soon as the ship needs to hide in the shadow and manoeuvre in the darkness of a shaded creek / of a large cave, etc.).
So closing an eye so an light sensitive contact len worn inside the car / UV-sensitive contact len worn in a convertible doesn't darken and keeps you able to see and navigate your car in the darkness of a tunnel is *litteraly" driving like a pirate.
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Translation Lenses? Is that some new augmented reality shit that automatically converts signs from foreign languages into one the wearer can read?
It will be interesting to know how fast those lenses react to sudden changes of light. For example when driving from a dark tunnel right into sunny open road conditions or vice-verse.