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Making My Own Glasses

eidel.io

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Re: Making My Own Glasses

#71

Post by olieidel »

atoav wrote: post #4

This is clearly a case where the sole act of him sharpening his own perception of what glases do resulted in him getting better glases. I work freelance as a colorist and re-recording mixer – both are professions which are highly based on perception. And it is certainly true: if you try to really go into the details of something, be it color, sound or anything else, it already helps a lot if you sharpen your senses t…

Totally agree. It's a cool idea that going very deep in a certain field yields benefits which were unimaginable in the beginning (or to others).

Re: Making My Own Glasses

#72

Post by amingilani »

vanattab wrote: post #55
amingilani wrote: post #43

This is amazing, however, I have the opposite problem: how do I measure for contact lenses? I've never been able to get a good fit for my contacts although my glasses have always worked well enough. The weird thing is that when I go to get contact lenses, the retailer orders them according to my glasses prescription, but subtracts seemingly arbitrary values from it to arrive at the contact lenses' values. I live in P…

Do you have a stigmatism? Contacts offten don't work well with people of stigmatism.

I do have astigmatism, actually. However, looking at the prescription of the author in the article, it appears that he does too!

Re: Making My Own Glasses

#73

Post by olieidel »

amingilani wrote: post #43

This is amazing, however, I have the opposite problem: how do I measure for contact lenses? I've never been able to get a good fit for my contacts although my glasses have always worked well enough. The weird thing is that when I go to get contact lenses, the retailer orders them according to my glasses prescription, but subtracts seemingly arbitrary values from it to arrive at the contact lenses' values. I live in P…

Yes, that's a real problem - and I think those "arbitrary values" even vary by manufacturer. The best strategy I can come up with right now is ordering a pair of contact lenses based on a "best guess", possibly by an optician, based on your values for glasses.

Then, check whether they are over- or under-correcting and order another pair with slightly different values under the assumption that your initial "best guess" was off. Then, compare and repeat..

Re: Making My Own Glasses

#74

Post by olieidel »

amingilani wrote: post #72
vanattab wrote: post #55

Earlier quoted context omitted.

Do you have a stigmatism? Contacts offten don't work well with people of stigmatism.

I do have astigmatism, actually. However, looking at the prescription of the author in the article, it appears that he does too!

Yes, I do. I had lenses with cylinders (for correcting it) in the past and didn't like them. They're larger and asymmetric - the lower side must be heavier so that they always align correctly on your eye.

With not-so-bad astigmatism, you can get away with not correcting it in your contact lenses. That's what I currently do. It works okay and brings you to a good level of vision (1.0 here in Germany, probably 20/20 in the US).

Re: Making My Own Glasses

#75

Post by olieidel »

djhworld wrote: post #11

I'm going for my regular eye test tomorrow, I'm similar to the author with toric contact lenses (for astigmatism) and glasses for all other times. I'm not looking forward to the "does this look better or worse?" dance and can totally relate to the author's frustration!

Good luck!

Re: Making My Own Glasses

#76

Post by blacksmith_tb »

criddell wrote: post #51
alfonsodev wrote: post #6

Earlier quoted context omitted.

I know, I though it might a very expensive but precise way to measure that with time or new tech could become afrodable.

I don't see why the entire process couldn't be automated. A machine could ask me "which is better A or B or are they the same?" There are other parts of the exam that are more related to eye health, but I don't see why they vision prescription process and the eye exam have to be combined. How many people that don't wear glasses ever get their eyes examined?

"Which is better?" is the subjectivity people are hoping can be eliminated, the patient's, not the examiner's. This is an interesting black-box problem, I suppose it's possible that with the examination of enough eyes a system could suggest corrections, but I am skeptical.

Re: Making My Own Glasses

#77

Post by specialist »

Great read. Thanks.

I've also received lenses that don't match the prescription. My ophthalmologist says that source of error is common. So now I have the doctor's office verify my lenses.

Re: Making My Own Glasses

#78

Post by ubermonkey »

emptybits wrote: post #5

Fascinating hacker story in an unexpected domain. Thank you! A side note about "getting your numbers"... The author remarks, "she’s not happy to share the measurements with me as she fears I’ll run off and get my glasses made online". This will obviously vary by jurisdiction but what the author describes may be illegal in some places. e.g. where I live, there is a law since 2010 requiring opticians and optometrists "…

I'd treat a refusal to share the prescription as a dealbreaker. I've never encountered it at all. I'm sure it DOES happen, but if you're very clear about your expectations you can keep them from playing this card.

Re: Making My Own Glasses

#79

Post by diroussel »

tonyarkles wrote: post #50
djhworld wrote: post #27

Earlier quoted context omitted.

Not sure about legality but here in the UK you will find opticians will give you your prescription, but often exclude the pupil distance measurement (I think) which a lot of the online stores require. I think you can ask for it, but they will only give it begrudgingly.

I encountered this in Canada, with an explanation given to me that there was a lawsuit at some point where an optometrist was sued after a client ordered glasses elsewhere based on the provided IPD and got glasses that caused headaches or something like that. From Wikipedia[1]: > In both the UK and most of Canada (excluding British Columbia[5]), the PD measurement is classed as a dispensing tool rather than a part of…

As part of GDPR you can request a copy of any personal data. In the UK this is governed by the ICO, and it’s called Right of Access.

https://ico.org.uk/for-organisations/guide-to-data-protectio...

Re: Making My Own Glasses

#80

Post by diroussel »

stereo wrote: post #68
emptybits wrote: post #5

Fascinating hacker story in an unexpected domain. Thank you! A side note about "getting your numbers"... The author remarks, "she’s not happy to share the measurements with me as she fears I’ll run off and get my glasses made online". This will obviously vary by jurisdiction but what the author describes may be illegal in some places. e.g. where I live, there is a law since 2010 requiring opticians and optometrists "…

In the EU, a GDPR data subject request will get you all the data you want.

Correct. And in the UK (maybe in other countries too) you can make a request verbally or in writing. So if they write it down; your allowed a copy.
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