High prescription glasses, thin lenses for high minus glasses with thick lenses

[@MollyScruff]

Absolutely brilliant! Why isn't this commonplace?! My own recent glasses look comparatively like they're from the dark ages! Will contact you soon, and will share this with my current optometrist! Thank you, Cheers!

[@precisionopticseyewear]

Thank you for watching 🙂 glad you found this useful. Sure thing, feel free to get in touch as and when. Where abouts are you located, UK? Colin

[@_SomeRandomYoutuber_]

Because it takes a bit of time to do. We do about 300 jobs a day, and if we spent time trying to make every high minus job flush, we'd have an infinite backlog.

[@jdooley1982]

These videos are hypnotizing. I'd be fired on my first pair of glasses for wasting time trying to find the perfect bevel. 🤣

[@precisionopticseyewear]

Hi 😅 Thanks for watching. Yes, it's easy to get distracted....Good job my boss is pretty cool 😉😅

[@edwardinho6185]

Interesting video - my prescription is -7.50. I tend to avoid a lens height of more than 35mm.

[@precisionopticseyewear]

Thank you. Yes there will be measurements, styles and frames that suit you and your prescription well 😁

[@TheErazar]

Nice, thanks for an inside view

[@taneshamcpherson118]

Hi Collin.I watched your video and I was so impressed. I'm from Jamaica. My prescription reads -14 in the left eye and -11 in the right. My lenses are very thick. I need a new pair of glasses soon. Could you help me in getting my lens looking thin? How could I get in touch with you? Also I have a small oval face. What would be the best frames to fit my very thick lens?

[@precisionopticseyewear]

Hi, thanks for watching, much appreciated. Something like this will get you the best results being seen face to face, taking accurate measurements and finding the correct frame and lens combo is paramount. Look at getting a 1.74 high index lenses and ask your supplier if they can get lenses from Tokai

[@Fireneedsair]

Thank you. 2 questions for you. 1. Why are eyeglass lenses thicker on the outside as opposed to the inside? 2. How wide are those lenses in mm? Thx again

[@precisionopticseyewear]

Thanks for your question. If you have a minus prescriptions or a high Cyl power then this is when you will notice the edge thickness. You can reduce this by having your lenses made thinner with a high index and/or by using a smaller frame size. I'm not sure of the frame size in this video sorry!

[@Fireneedsair]

@@precisionopticseyewear but not my question. Why is the outside of a lense thicker than the inside nearer the nose? Less light to refract because of the nose blocking light? Just curious

[@kiwi8157]

@@Fireneedsair I have wondered about this too, and I have watched a couple videos of people making the lens shapes, and pondered it... I believe it's because the inner part of the lens is going to be less "wide" than the outer part of the lens in most cases, due to the fact that the lens shapes are typically (annoyingly) bigger than they should be relative to ones PD (a width/horizontal measurement). So the lens will simply have more material on the outer side... And more material corresponds with greater thickness if you're wearing myopic/minus lenses. Should you happen to find a frame that puts your eye dead in the middle of the lens, then I imagine there wouldn't be excess thickness on the outer side, because the sides would be balanced. That's why with higher prescriptions it's especially important to use smaller frame sizes, so you aren't getting lots of lens that's bulky on the side. Of course if you happen to have a large PD you will be able to wear larger frames, but it's hard for those of us with smaller PDs, especially when the "fashion" of bigger frames/lenses remains despite this being not the best optically. Similarly I believe that for higher Rx the height is also important - essentially you want to align the optical centre with the pupil... Though I haven't been able to find an online store that gives this information, aside from when it comes to multi-focal glasses. Anyway, again, if you're needing the lens to be moved higher up (typical, because most often shapes of the lenses have central height below the pupil) then you're also creating extra thickness on the lower/bottom side, as more of the lens blank gets used closer to its thicker edge there. So typically most outer side and bottom side lenses are thicker. Then add any astigmatism cylindrical correction on top to the axis, and you'd be boosting the thickness along that correction angle too. Hopefully I've got this about right, though hopefully there's someone out there who knows and can explain it better. I think it's called "decentration" of the lens for these two movements (horizontal and vertical), and then along with these the lens size and then cylindrical astigmatic correction are the other main players. Actually it seems @precisionopticseyewear replied to @gp9532 about this... :)

[@Andy-From-England]

Makes you wonder how they did it with out computers but thanks for sharing us the secrets of glases making 😉

[@precisionopticseyewear]

Thanks for watching 🙂 Yes, there was a lot more skill required using more hand tools years ago. There's still an extremely high level of skill needed in this day and age, but there's no doubt that technology has made certain aspects redundant 😬

[@jojotwice8918]

forget thin, more interested in how to minimize the shrinking effect of the eyes. I've seen people make thinner lenses but never seen someone minimize the shrinking effect

[@HellVedaKa]

this was very insightful!

[@precisionopticseyewear]

Thanks for watching, glad it was handy 😀

[@Dom4z]

Hey, what sort of index would be best for -7.5 or -8.0 prescription? Also, is it true that the higher the index the more distorted the vision is in glasses? Something to do with ABBE levels of higher order aberrations? Like would 1.74 index be worse from visual clarity than 1.67 index or 1.64? Also, who should the manufacturer of the lens be for best quality? Money is not an issue. Thanks!

[@johngrath9773]

Very informative. Thanks!

[@precisionopticseyewear]

Hi John, thank you for watching. A slightly longer style of video but I felt its a topic that would help 🙂 Glad this was useful for you. Colin

[@gp9532]

Why are the outer (temporal) edges considerably thicker than the inside (nasal) edges of my lenses? Rimless frame, minus 6 on one side, minus 8 on the other. Thanks for your consideration!

[@precisionopticseyewear]

Thank you for your comment. Rightfully noted, with a minus prescription the lens will be thickest at the outer edges. The reason for the difference is due to your pupil distance. If you have quite a narrow pd or a wide lens/frame (or both combined) then you will see this more noticeably. When your lens are in the pre cut stage, the edges are the same all the way around the edges, the lens will have a geometric centre point, this point is then positioned in relation to your pupil distance and frame combination. Quite hard to explain just with words, hope this helps 🙂

[@gp9532]

Yes, that's helpful and I appreciate you taking the time to respond. It seems I would need to size my lenses (rimless) to match my PD so that my eyes are centered evenly between the nasal end and tempora.l

[@sajdashafiq1721]

Hi ...can you make lenses for someone who has kerratacosus in both eyes. They have had laser cross linking operation on both eyes.

[@balusawant407]

best eye reding gases prise

[@joyaustin6984]

Please have been wearing my glass for 4 year now and the prescription number on it is wiped off ..... Is there a way i can get to know it without going to my doctor

[@rebelburt]

Hi where are you based and can you thin a thick lens down to fit nicely into a frame and love the video by the way

[@precisionopticseyewear]

Thanks for watching 🤓 im based in Essex, East Coast UK, are you near?

[@rositadejesus3886]

How much would this cost to get done?

[@lakshitasharma9761]

Hi, Do you ship to India?

[@precisionopticseyewear]

Hi, it's not something that I do in general..what was it you wanted shipped?

[@jethik5826]

just received my new glasses but the lenses dont seem to be sitting inside the rim of the frame- can i get the lenses thinned to fit in ? its really uncomfortable with the lense sitting against my face . i have verifocals . -

[@precisionopticseyewear]

Are your glasses a high minus prescription? A thinner material will help with this but also it needs to be cut a specific way to help minimise this too. What is your prescription roughly?

[@nadelkhan6094]

Very impressed.... Do u guys have a website I can visit?

[@precisionopticseyewear]

Thank you, appreciate your support. Yes, my website is www.precisionopticseyewear.co.uk Thank you

[@emilianolausell]

Hi, do you have a website where I can order a pair of glasses? We need them around -37D.

[@precisionopticseyewear]

Hi, sorry that's not something that we would be able to do in that way unfortunately. Is this a glasses prescription?

[@precisionopticseyewear]

If you have any questions at all, please leave them in the comments and I'll get back to you 🤓 Thank you for watching! Colin

[@syedhabeeb7471]

What is the power in this lenses

[@kattilaissaar9206]

Hi! whay you use little red pads? :)

[@precisionopticseyewear]

Hi, good question. The little red pad is stuck onto the lens with a special adhesive pad, this then lets me put the lens into the machine and two little arms hold onto this red pad to cut. I have a video on my channel that shows this process on how glasses are made 🙂 hope this helps. Colin

[@kattilaissaar9206]

@@precisionopticseyewear Hi! Thanks for answered! But i mean why little not big white ? Is there some specific reason? Holds better? :) I am optician from Estonia and I like to watch how others works and mayby get new tips ;)

[@onehonei2]

Can I send you frames with my prescription not now but in a few months

[@precisionopticseyewear]

Hi, thanks for your comment 🙂 please email me at [e-mail] Colin

[@michellecallum6933]

Do you have video of very high prescription lenses of - 23.00 & - 25.00?

[@precisionopticseyewear]

Hi Michelle I do not sorry. But as this type of prescription is a - you will find increased thickness at the edge with the thinnest part being in the centre

[@michellecallum6933]

@@precisionopticseyewear Thanks.

[@nargisnawabi7959]

The new glass high index looks like minus what ? -4 or -3

[@precisionopticseyewear]

Hi, thanks for watching. The prescription was as follows: SPH -6.00 CYL -1.75 They came out really nice, worked well with the frame too 🙂

[@janwillem4431]

Is it possible to make glasses thinner for some one with eyes of -17 i have always avoided glasses because the were heavy or to thick and never felt comfortable

[@sandesggurung2069]

Hello sir,could you tell me How much thinner lense can be made for high prescription -15? I,ve -15 prescription

[@precisionopticseyewear]

Hi, thank you for your question. There are lots of ways that this prescription can be thinned. A combination of a high index lens and a good fit and size frame are important. Companies like Tokai can produce fantastic Optics for this prescription. Hope this help Colin

[@christiankolom9985]

@@precisionopticseyewear I live in Houston, how can I get my -16 perscription into a thin lense by your company?

[@ToniaLenza-bs5cv]

Isn't up to the person if they want thinner lenses?

[@davejones290]

Thanks for that,why is this always so expensive, or shod it be,cheers again👍

[@precisionopticseyewear]

Hi David, thanks for watching and for you question. There are a few main reasons. First the price difference (increase) is usually a result of the fact that the actual materials just cost more to source. Different processes are used to create hi index lenses. To be honest though, this reason alone isn't the main reason for the price. Secondly, many eyewear providers do not have the equipment like an on site glazing lab like we have. This means that they will be paying a third party company to glaze, cut and source the lenses, there is normally a other costs included to for that kind of set up, there will be lens costs (sometimes higher than if we just ordered the lens for ourselves), there will be glazing fees that they will pay and then maybe courier fees. Thirdly, many places then factor in the chances of remakes. So basically is a lens is sold for X, they want to make sure that if something were to go wrong during the glazing process (if cutting on site) then they have enough money (profit) in the sale go cover buying in a replacement lens. Lastly, even though this isn't specific to just high index lenses, but from a business point of view, we have to factor in maintainence and repair costs to our equipment. Some equipment (like mine) has to be serviced by a specific company/engineer. These are, as you could imagine nit cheap, and like all businesses, these associated costs eventually trickle down to the end client. It's also dependent upon the retailer, I have other businesses near me that are just charging more for similar products because that's their pricing structure for them. Do you wear hi index/thin lenses? Hope this helps 🙂 Colin

[@davejones290]

Thanks a lot man,that answered my question for sure,much appreciated ,cheers👍

[@precisionopticseyewear]

@@davejones290 my pleasure, glad it helped. Thanks for your support too 👍

[@gersonbedoyacondori1244]

good video, I got one question, how many days is it going to take to addapt me to my new lenses?

[@precisionopticseyewear]

Hi thank you for watching and your comment. There is no rule or guide as it depends on your prescription, previous prescription, what's lens types, eye health etc. What glasses do you have and what did you have before? Colin

[@LR-kj8ec]

Hi, would you get same effect for -8.75 -8.25? with 1.74 index? Is glass better, if the frame is the big thin frames like Alex Perry? Thanks very much for the insight in how they are made!

[@precisionopticseyewear]

Hi, thanks for watching and also for your question. Yes, the areas of improvement and thickness will be the same, thickest on the outer edges and thinnest in the centre. A thin rimmed frame can help with weight reduction overall but may not help out aesthetically as you will see more edge thickness. A thicker frame can help hide this more but it obviously can add a fraction more weight. In terms if glass, glass is actually quite good in terms of optical clarity and toughness/longevity, but they will be vert, very heavy. So with Optics, there is sometimes a trade off, weight vs thickness vs looks and obviously cost. Good frame choice (size and shape) are a big contributers to making the lenses thin too. Hope this helps!

[@MrLim26]

is that water while cutting lense? -jonathan

[@precisionopticseyewear]

Hi, thanks for watching. Yes it is. Its part of a self contained system. The water helps the cutting process and waste water is filtered and refused using pumps. Hope this helps. Colin 😎

[@MrLim26]

@@precisionopticseyewear thank you very much

[@piper2239]

Is it possible to get transitional lenses with a prescription of +10.25 sphere / Cyl -4.50...thanks

[@courthaven]

I am not the optician, but yes it is possible. I have a 1.74 lense with transitions, but my colors were limited to gray or brown. My prescription is pretty much - 12 and - 11.5

[@piper2239]

@@courthaven Thanks for your response...much appreciated

[@courthaven]

@@piper2239 No problem

[@piper2239]

@@courthaven Thanks

[@jenniferpesina8927]

I want to see a high prescription plus lens

[@precisionopticseyewear]

Thank you for watching, I'll get round to making a video on that one, thank you 😊

[@jenniferpesina8927]

please let me know when u have made your video

[@balusawant407]

low index power eye number list

[@precisionopticseyewear]

Sorry, not too sure what you mean here?

[@gaylecheung3087]

+875