CRAP-O-VISION - Polycarbonate Lenses - Abbe Value 30?! - YIKES | Endmyopia | Jake Steiner

[@paribeshpoudel297]

From my own experience. Do not go with a polycarbonate lens. Use cr 39 instead. If you are focused on clarity and color use a cr39 lense.

[@plowe6751]

Trivex for safety.

[@plowe6751]

What is the strength of your prescription? I want to know the highest sphere and cylinder of your prescription.

[@phototristan]

The only poly lenses I don't mind is if there is no prescription, like for non prescription sunglasses that I wear over contacts. Otherwise I will never again get polycarbonate lenses, they are just not good performing lenses for prescriptions.

[@plowe6751]

I've worn polycarbonate lenses for the last 20 years and I've never noticed any chromatic aberration. During this time, my prescription was about -3.00 to -4.50. I read that chromatic aberration doesn't become a problem until the strength of the prescription gets really high. My question is how strong must the prescription get before chromatic aberration is noticeable in polycarbonate lenses?

[@joelstatosky1817]

I was interested in getting glass lenses, but then i realised why my glasses broke in the first place. So I will probably be getting Cr-39, it seems like the best option for me. Although I may get glass since Oliver peoples still has it available

[@JoseDanielFSX]

High! I am currently suffering from chromatic aberrations with my new glasses I have seen 4 different optometrists now and no one seems to be able to help me. The Abbe value of my current glasses is 59, I suggested mineral lenses but the optician told me that they have the same Abbe number than the organics that I already own. The only difference between my old and my new glasses is 0.25D higer in aatigmatism. (My current prescription is -1.5 myopia, -2.75 astigmatism on both eyes) also, I have a blue filter on my old glasses. I'm truly desperate about this...

[@curlyhairdudeify]

Get cr39 lenses.

[@bandicootcollector]

People always say that CR-39 is more resistant to fogging up than glass, but my glass lenses hardly fogged up and the CR-39 lenses seem to fog up constantly! Any truth to this claim??

[@MaerdYsatnaf]

When treated with specific coatings, CR-39 can be fog resistant. But generally speaking, CR-39 is going to be more porous than crown glass, and will fog up easier on its own. Invest in a good hydrophobic/oleophobic lens treatment for plastic lenses to keep them from fogging!

[@MarkSimkoofLI]

Yes, CR39 has a lower specific heat than glass, and the cold surface is a place for atmospheric moisture to condense. I have an anti-fog AR coating that is available to my patients. Do you want anti-fog lenses?

[@wheezin_mtnbkr3576]

Thank you for this video. I always buy the cheap or free lenses 1.5 plastic, and I always feel that I see better with them vs high index. Less color banding and blur when off axis. I figured this out when I ordered two pairs (a backup pair), one with 1.5 index plastic and one 1.59 Poly. I have -4.00 in each eye, I am a myope. I dont think my lenses are all that thick, they do not stick out of any plastic frame I have ever owned. I would rather have thicker lenses than color issues.

[@endmyopia]

Super fascinating all of this stuff, once you know what to look for!

[@charleshorseman55]

I always noticed color and clarity downgrade with poly lenses (as a kid, it was quite noticeable) Been wearing contacts instead for 25 years. Vision hasn't changed at all in 20 years. vision changed rapidly with poly lenses before. New glasses (rarely worn) are high index. Thinking I maybe should have gotten cr39. Wish I could get high quality glass!

[@plowe6751]

I am sure you can get high-index glass. It's just a matter of finding it and paying the exorbitant prices.

[@RedShadow3333]

If there are any AutoCAD users on here with pretty low diopters that wear glasses while drafting, let me tell you, around -6.00 this effect starts to get really super annoying. In the CAD program there are three lines, x,y,z vectors, or horizontal, vertical and depth, and each one has a bright color. One is red, one is blue and one is green. When you are drafting, and you have a normal white line that is supposed to line up with or meet one of those colored lines at some point, it's very difficult to tell if it actually does because the different colored lines actually move depending on the angle you look at them through your stupid polycarbonate lenses. It makes it especially difficult to see where the actual "origin point", or point where the three colored lines meet is. You know the computer put it at 0, but when your lenses are throwing you off it starts to get old fast. You won't notice it too much on normal stuff but on brightly colored electronic displays it is a factor.

[@curlyhairdudeify]

-6 is a high Rx the lenses for that are 1.74

[@hunterxiaoyan1986]

What about internal freeform POLY lenses?

[@christheother9088]

Interesting to see that the high index lenses provide 100% UV protection. Are sunglasses redundant? Also provides additional protection for welders.

[@ItsPainnz]

hell no. if you are light sensitive you need a sunglass. transitions sound like they would fit your needs best

[@jpritch69]

So this is why LCD billboards look like unfocused shit to me.

[@Sir-IKON]

how much pot did you smoke before this video?

[@Soloist1983]

I just got done with some research on this, I was going to go with 1.74 high-index material but found the ABBE value was 32, 1.70 material is 36, called the shop, told them that I would like to switch materials. My prescription is -12.75 and -9.50, so I don't have much of a choice, I have to go with some form of high-index

[@MarkSimkoofLI]

You do have a choice. We used to make CR39 lenses up into the -22 D range. 1.70 & 1.74 index lenses have a little higher Abbe value than polycarbonate. You'll notice the dispersion (blue and orange edges) when looking off to the side. If you can wear contact lenses you'll be much more comfortable.

[@keiths9045]

Hi everyone. PLEASE PLEASE PLEASE read the disclaimer attached to this video and then speak to an actual optician regarding the questions about your prescription and/or your glasses.

[@endmyopia]

Indeed. And visit Google Scholar, type in “lens induced myopia” to learn more about the opticians treatment device for your eyesight. 😉 For actual eye health questions go see a proper ophthalmologist. 👍🏻

[@Teromi]

I have a trivex pair and a poly pair and honestly I can’t discern any difference between them.. my prescription is light, would I see a difference if I had higher prescription?

[@joelstatosky1817]

Most likely

[@sustan4532]

Hi..greetings from Ireland... great vid thanks ...ive got a high prescription with a stigma in my eyes ...are polycarbonate lences safe to wear daily ? ...it’s € 400/ € 500 per frames with glass lences / prescription for glasses in Ireland ...rip off... if the polycarbonate lences were safe I’d get them...just researching how they affect the eyes & how safe they are ? I talked to a company in the states today they said I don’t need to get my polycarbonate lenses tinned Down... so how does it work ? I just send them my prescription ..do i need to get a coating ? is it possible to get a tint on polycarbonate lenses ?...any info would Appreciated .. thanks again Jay...

[@nicolette3436]

Hi Jake I have 20 20 vision however long term do you think Cr-39, Trivex, or Tribid is better for one's eye health?

[@endmyopia]

Long term no lenses are better for eyes. 😉

[@1953childstar]

Polycarbonate lenses do not have as high an index of refraction and I have found they actually scratch more easily than a high index lens with a coating. They were designed as "safety lenses"...

[@MarkSimkoofLI]

No, polycarbonate was introduced as the first plastic high index lens. I was there when we did it. Soon after, they were marketed as safety lenses. Uncoated polycarbonate is too soft. What scratched for you was the hard coating. Obviously you didn't get one of the good ones.

[@unboxdai462]

Jake this is very informative 👍. One question I have, I recently made the polycarbonate glasses with antiglare, before i had standard plastic and antiglare. The new glasses have bigger frame and different design, glass looks thin, but not much different than my old plastic lens, but when I view it from side I see lot of layers and the glass appears thicker as if Im wearing thick glass. I asked the sales guy, he said its because of my high prescription. On my old glasses I don't see those layers and prescription didn't change much, not sure if it because of polycarbonate?

[@curlyhairdudeify]

It's because of your high Rx.

[@ItsPainnz]

different light dispersion has to be better and worse for some people. -2.00 worn poly/plastic/cr/trivex also a myope. no issues since i was 3. in fact price to performance i prefer a HARD carl zeiss lens design over soft designs. different for everyone.

[@vincentaon]

does any of you know how long i should do active focus for? and should i take breaks between them or any of that?

[@paramjeetthakkar7088]

How's your eyesight improvement journey going?

[@23100Battlefield]

Hey Jake I need to know, do sun glasses also cause Chromatic Abberation???

[@MaerdYsatnaf]

Exotic Parallel it depends on the material they are made from.

[@shadowgamer8575]

stupid question again but can i do active focus without glasses

[@neildoerdan2298]

Yes - do it with a book, depending on your myopia will depend on how far away you need to hold the book, if its further than arm length then you have option to use + lenses or go for a walk and practise longer distance viewing. Remember to get into good habits.

[@shadowgamer8575]

Neil Doerdan so plus lenses isn't required?

[@neildoerdan2298]

Shadow Gamer plus lenses are not required. If you were contact lenses then they can be helpful, but otherwise try to avoid them...

[@BlakeSlacks]

Hey Jake, been a while, back on the wagon. So I'm currently -7.50 w/ astig (R) & -8.75 (L). I went with 1.74 High Index Polymer lens from Zenni. I'm quite certain this was the right choice. It's possible that I can use a lower index?

[@mamaboocee]

You should watch Laramy k channel about that. In some cases 1.67 might end up being thinner. I have a high negative Rx, and found out that depending on the frame size, the aberrations on the edges will distort how your eyes look through those lenses. I will try to find a link for you. I found it: kzbin.info/www/bejne/d4u8m3yuqt6IeKs I also ordered 2 pairs of the same frames from zenni, but one with 1.74 index and one with 1.67 index. I will let you know what I see (no pun intended). The channel I linked you to is for opticians but it is loaded with valuable information that will help you choose the right lenses and frames no matter where you get them.

[@1953childstar]

You can use a lower index, but the lenses will be thicker.

[@MarkSimkoofLI]

Yes. You should consult with an experienced local optician. Otherwise, you really don't know what you are throwing your money at when you order online.

[@wheezin_mtnbkr3576]

This video is making my eyes bad, you are so out of focus! All kidding aside, Yhe polycarb lenses just look so nice and are so light. Get a nice antiglare coating and they look great. BUT...I see better with 39s by far. The frame heavier, the lens is thicker, but I do not notice color separation. It also fixes a problem where red vs blue seem to be at different depths for me.

[@michaeldeprospoakamicimawi1517]

I’ve been in the optical industry for twenty years. What you’re talking about makes sense to a point but come on man. Where are you coming from.

[@endmyopia]

Coming from having been -5 diopters and now at 20/20, and tens of thousands of people telling the same stories. Also Google Scholar "lens induced myopia" as well as axial length going both ways. Myopia is about making money, not an actual "condition". It's ripping people off while ignoring biological reality. I come from this makes me angry. ;)

[@MarkSimkoofLI]

He's a bit of a ... ... nevermind. Polycarbonate is great for most light Rxs, and you know that. This peripheral defocus thing is still being researched. The sky isn't falling. My uncle made it to 88 without reading glasses. He just accepted a reduced level of visual function, and was damn good (and maybe a little lucky) at guessing. He just discovered how much better he sees with eyeglasses. My wife is 55 and can still read without glasses. She still doesn't know how ugly I am.

[@areallyboredguy5825]

Mars

[@curlyhairdudeify]

​@@endmyopia So all of the people with > -5 to +5 that can't see anything, yet sing their praises about how much clear and better they can see after getting eyeglasses..... Is false, and you are the only truth. You really went from -5 to OD 0.0 and OS 0.0 on both eyes.... Wow, you either got LASIK or PRK. There is no way that your cornea became a perfect haploid lens by itself.

[@johnhouse2657]

Would you recommend Trivex for high myopia?

[@MaerdYsatnaf]

John House short answer; no. Long answer; while Trivex (or Phoenix, depending on which company you’re buying from) is a great material for common refractive corrections, it’s not going to be your best pick for higher powered prescriptions. The reason is that while Trivex certainly has a low specific gravity, it still has a relatively high index of refraction. So this guy talks about ABBE value, which in layman’s terms is the way light is shaped when dispersing through a material. The wider the dispersion the more chromatic aberrations we see in the lens material. These manifest as rainbows essentially. Index of refraction however, speaks in terms of how FAST light can move through a material. If a lens material has a high IOR, then light will pass through it faster. This means that lens materials with higher IORs can be thinner, and still produce the same correction as a material with a lower IOR. Trivex has a very low IOR. It’s actually almost about as low as crown glass (remember coke bottle lenses from the 70’s... yeah). Because of this, patients with high myopia are better suited with high index lenses. I’m an optometric assistant that works in a private practice. I deal with glasses on a daily basis for a number of different people with a myriad of different needs for their vision. I hope this info helps you.

[@TonyNovation]

@@MaerdYsatnaf Hey, can I pick your brain? I recently got crizal coated polycarbonate lenses with a Crizal coating and very slight prescription. They create a very pronounced starburst effect when looking at lights at night (e.g. headlights, street lights) and create halos around tail lights and people in a play. What would you recommend as a lense material to fix this issue? Trivex? CR-39? I've already brought the glasses back to the optometrist twice but still have the same issue.

[@MarkSimkoofLI]

Trivex is very lightweight, but an index near CR39. You might as well get CR39. Tribrid has an index near 1.59, is light, and has a higher Abbe than Polycarbonate. It makes a nice lens, but it costs a bit.

[@apricotfighter2014]

Hi Jake! First of all, thanks for the videos. My right eye is going quite well, but my left eye is not really doing anything, that's still the same and during clear flashes I often feel like it's only my right eye finding the focus. I don't know if there was a video or article on this topic, but let me ask if there's something I could do.

[@endmyopia]

No super quick definitive answer on that one. Depends on correction, how recent changes have been, lots of things to consider. Very generally though, one eye almost always is a bit slower than the other.

[@paramjeetthakkar7088]

How's your vision improvement journey going

[@derbezacesanchez3779]

Wow, my school years were about 1967-1979 I remember in first grade having to sit near the front of the class or squinting and having to depend on listening. I did not get glasses till the seventh or eighth grade, maybe my vision was improving but at that point teachers tend to notice and I was probably tired of making excuses. Anyway, glasses were made of glass back then. We were poor I did not change prescriptions or get an exam for five or more years between new pairs. My right eye at this moment has some annoying floaters on the side, opthamologist said no cataracts or glaucoma thankfully.

[@MarkSimkoofLI]

Now they want to 'manage' myopia by either fitting the child with contact lenses or giving them eyedrops to dilate their eyes, because there is slight statistical evidence these therapies might slow the progression in some people. That's an awful lot of 'if'. The contact lenses and the dilation cause visual difficulty. I think it's too big a burden to place on a child for too little promise of too little gain. The learning setback is too high. I feel the doctors administering this therapy are benefiting themselves more that they are their little patients.

[@avoorthuijsen1233]

Hello, Thanks for your video's. I have a high myopia too (-6). A week ago I was visited by some people who demonstrated the Bemer therapy and I wondered if you know this method invented by a Swiss physician. It is supposed to give your immun system a boost by electromagnetic pulses that give your blood more oxygen, etc. It's among others used to cure myopia and other (eye) diseases. The only problem is that it is very expensive (4,000 euro's). Greetings from Aernout Voorthuijsen from The Netherlands.

[@23100Battlefield]

that is definitely a scam. "electromagnetic pulses" lol. And your immune system has nothing to do with axial length, unless we are talking about an autoimmune disease, which myopia isn't

[@paramjeetthakkar7088]

How's your eyesight improvement journey going

[@lanaadvedor4280]

you don't wear contants right?

[@nikuliitt]

he doesn't

[@billytu5695]

He's 20/20

[@mgtowanonymous3120]

*Dont buy the daywolf glasses.*

[@tomdavis8757]

Here’s to all the Oakley fans thinking they have “premium” lenses.

[@teucer4]

Don’t let the optical shop convince you that you cannot buy glass lenses anymore. It’s not true. They’ll do it while they are gritting their teeth, but they will order you glass lenses in 2019. The main advantage to glass windows, especially for those that do not have a strong prescription and they are for the glass lens does not contribute to our huge weight difference, is that they are scratch resistant beyond any other material that you would make glasses out of.

[@MarkSimkoofLI]

We don't do them in office any more. Few of the labs we order from do them either. I do have a lab I can get them from. I'd have to send your frame out for it. I don't edge glass lenses in the store lab any longer. Also, since the glass particles can present a scratch hazard to other lenses, they have to be done in an isolated lab. Expect to pay a premium for that.

[@grigorioschristodoulou5229]

Don’t know if it’s worth the risk of shattering. At least in terms of ABBE value, CR-39 is practically the same and since it’s one of the cheapest materials, you can pay for the best coating, incl. UV which it doesn’t naturally have.

[@yark618]

Why do you say myopia “may” be reversible

[@endmyopia]

No absolutes.

[@nabilandre]

@@endmyopia Only a sith deals in absolutes

[@endmyopia]

@@nabilandre 😂

[@thedavephan]

I just got polycarbonate lenses from lenscrafters today with the premium antiglare, my prescription is -2.25 in both eyes and my prescription has been the same for 7 years now unchanged which they are always surprised, I don't know why it doesn't change, I usually get trivex lenses from somewhere else but decided to go with lenscrafters this time..... I paid about $300 with tax and got frames i really like. I am supposed to get them in one week... Should I go back in tomorrow and cancel and go with the regular plastic lenses, or would they be too thick???? I am worried I made a bad choice.

[@endmyopia]

$300. That's about a zillion percent profit markup. Wholesale cost about $15-$20 including labor, and all overhead costs (max as high as $50 if the frames are a big fashion brand).

[@thedavephan]

endmyopia I'm not sure to take you seriously. I haven't found a pair of glasses under $200 anywhere at dozens of places with anti glare. I can't deal with all the glare. That is something that actually works for me. Where can I find glasses without a zillion percent markup? I have to try the glasses in person so ordering online is difficult but I guess not impossible.

[@thedavephan]

And the frames were Armani, don't care much about the brand really I just really liked the fit and feel of them.

[@endmyopia]

Answers to all this in the blog. endmyopia.org/expensive-glasses-the-shocking-scale-of-the-lens-ripoff/ and endmyopia.org/save-money-glasses-transitions/ for example.

[@thedavephan]

I am not really interested in buying my own lenses on ebay and cutting them myself or searching for someone else to cut them for me. My real question wasn't even about the money, I don't even know why I mentioned it. I just want the best optical clarity my money can buy while still having thin attractive lenses. I am willing to pay $200 on lenses that cost them $4 to buy. They cut them, they guarantee them, they fit them in the glasses and do all the extra work, they use accufit to measure where my eyes will see out of the lenses of the frames, something I am not willing to do. I am more than willing to pay $300 on a pair of eyeglasses with the convenience of just having to pick out my frame and let them do the rest. I have spent that much money going out in one night, i spend that much on cell phones for my family every month, not a big deal. I was just wondering, in your expertise would regular plastic lenses offer me better results optically over poly at my prescription without being too thick? again my prescription is -2.25 in both eyes.

[@henrykt.]

hai sir please tell about kerotocouns 👀👀👀👀👀👀

[@MaerdYsatnaf]

h e n r y k t kerotoconus is a condition that effects the cornea, more specifically the shape of the cornea. Basically when collagen proteins that are present in the cornea become weak, the structure of the cornea changes and becomes gradually more cone shaped. This can happen due to genetic birth defects, health issues, ocular trauma, the list goes on and on. Really, doctors aren’t sure WHY it happens. But there are some treatments available. One such treatment is to be fit with scleral contact lenses. These are hard, gas permeable contacts that are filled with saline solution, and applied directly over the cornea. Ask your optometrist or ophthalmologist what treatments are available to you. :)

CR 39 is the one I have

[@JamesSmith-vg9gc]

cool

[@St_Lucifer_Morningstar]

There's a lot of information here and good job man, but the delivery almost makes it miserable as for the most part you're just plowing on man! Some life would help!

[@endmyopia]

Oh I’m sorry didn’t realize I was here to amuse you.

[@St_Lucifer_Morningstar]

@@endmyopia my apologies if you were offended!

[@soundknight]

@@endmyopia there is an element of entertainment to all education. You are not discussing explosive action packed sequences here Jake, I thought it was a confusingly structured yet fair comment.

[@michaeldeprospoakamicimawi1517]

Dude get to the fucking point

[@TedMusic]

First