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Ask HN: Do your eyes bug you even though your prescription is "correct"?

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Re: Ask HN: Do your eyes bug you even though your prescription is "correct"?

#291

Post by _dabs »

OJFord wrote: post #162
bmurphy1976 wrote: post #66

Earlier quoted context omitted.

>Taking pain meds daily for life doesn't seem like a good plan. Definitely not a good plan, especially Ibuprofen. My mother took Ibuprofen for years to manage her arthritis and that absolutely wrecked her kidneys. Not to mention Ibuprofen can also cause internal bleeding. It's a quick short term fix but not a good long term solution.

> especially ibuprofen [...] wrecked her kidneys As opposed to what? It's all metabolised by something, choose what you wreck. Take paracetamol routinely instead and you'll wreck your liver instead.

Paracetamol is world standard for long chronic treatment. It starts tu hurt your liver only on big dosis. Source: FORTA List https://forta.umm.uni-heidelberg.de/

Re: Ask HN: Do your eyes bug you even though your prescription is "correct"?

#292

Post by bphogan »

genewitch wrote: post #204
dmpayton wrote: post #110

I was born with congenital bilateral cataracts and had the lenses in both eyes removed as an infant (a condition called Aphakia). I have been set up with monovision since I was very young -- that basically means I'm intentionally far-sighted in one eye and near-sighted in the other so that I use one eye for reading and the other eye for distance. I wear hard contact lenses most of the time, but I do have glasses. My…

The cold bottle glasses. You get those because they're cheaper these days. You can get the same prescription on a much thinner lens. I did that for my kid. He has a pretty strong prescription in one eye, but his lens is no thicker than mine. It adds a lot to the cost of the glasses, though. Easily $75 to just get half of the thickness.

Where? Even thick ones are super expensive here. Over $250 a lens. I'd gladly pay $75 more for a significantly thinner lens. Point me in the right direction please.

Re: Ask HN: Do your eyes bug you even though your prescription is "correct"?

#293

Post by bphogan »

dmpayton wrote: post #110

I was born with congenital bilateral cataracts and had the lenses in both eyes removed as an infant (a condition called Aphakia). I have been set up with monovision since I was very young -- that basically means I'm intentionally far-sighted in one eye and near-sighted in the other so that I use one eye for reading and the other eye for distance. I wear hard contact lenses most of the time, but I do have glasses. My…

I haven't met too many people who share this condition. Nice to meet you.

Re: Ask HN: Do your eyes bug you even though your prescription is "correct"?

#294

Post by serial_dev »

augusto-moura wrote: post #283
stevebmark wrote: post #277

I don’t know what your intentions or hypothesis are, but this is a dangerous place to be a novice in. Eye health is misunderstood and most people are ignorant of the basics. If you don’t know what emmetropization is, if you don’t know who Bates is, and if you don’t know why Bates is a quack, then I strongly discourage you from experimenting with user surveys.

I mean, what are the risks of the surveys? I don't think it will be dangerous to survey people without the full knowledge. Better to be curious about it than do nothing. Discouraging low risk research just for being pendantic sounds a like toxic gatekeeping.

It really is just unnecessary and arrogant gate keeping.

OP for now just wants to talk to people, I assume to understand their issues, what they tried, what makes it better and what makes it worse for them. Talking to people volunteering for a call is not dangerous.

For all we know, OP will not see any pattern that fits their hypothesis and leaves it at that.

Re: Ask HN: Do your eyes bug you even though your prescription is "correct"?

#295

Post by AceyMan »

walterbell wrote: post #193
globnomulous wrote: post #179

Earlier quoted context omitted.

Hear, hear! Here's a good way to test your glass's refraction index. On your desktop find a small red icon with something white in the center. Stare directly at it. Now turn your head until the icon is at the edge of your vision. If your lenses are cheap polycarbonate, the white part of the icon will appear to move towards the edge of the icon or even out of it. Most non-cheapo glasses today in the US use Trivex. It'…

Among non-glass options, CR-39 is a good choice for computer glasses with prescriptions weaker than -5: - high (58) Abbe number - thick (1.5 index) - cheapest Thickness and weight can be mitigated with a smaller frame, e.g. vintage options. Actually buying CR-39 lens might require solving a dark pattern maze of online or offline options, since the cost is so low.

My indoor (non Transitions™) multifocus² glasses are CR-39¹.

I'd used the same material for my outdoor/sports/driving frames but it's higher density caused them to slide down my nose during activity so the next pair I opted for Trivex.

--

¹–CR-39 requires full frame spectacles, as drilling holes is verboten.

²–Shamir Autograph III, awesome & highly recommended.

Re: Ask HN: Do your eyes bug you even though your prescription is "correct"?

#296

Post by jbornhorst »

01100011 wrote: post #219

About 15 years ago or so I was part of a study for Zeiss wavefront lenses. They used some sort of interferometer to map my vision and generated a set of aspherical lenses based on that. They were absolutely the best pair of glasses I ever owned hands down. No chromatic aberration. Absolutely crystal clear vision. Granted, this was before presbyopia set in. As far as I could tell, they never really rolled out the syst…

I’d love to speak with you - would like to learn more about your phoropter comment, and any steps you’ve taken to mitigate. I’m at jbornhorst [at] gmail.com if you have 20 mins to spare.

Re: Ask HN: Do your eyes bug you even though your prescription is "correct"?

#297

Post by jbornhorst »

walterbell wrote: post #225
01100011 wrote: post #219

About 15 years ago or so I was part of a study for Zeiss wavefront lenses. They used some sort of interferometer to map my vision and generated a set of aspherical lenses based on that. They were absolutely the best pair of glasses I ever owned hands down. No chromatic aberration. Absolutely crystal clear vision. Granted, this was before presbyopia set in. As far as I could tell, they never really rolled out the syst…

Zeiss i.Scription seems to be their single-vision wavefront lens, https://www.zeiss.com/vision-care/us/eye-care-professionals/... $10K MSRP for the optician's profiling equipment, https://navaophthalmic.com/product/i-profiler-plus/

I tried this recently and it’s the real-deal. Really neat to see a Rx written in .01 Diopter accuracy. Haven’t tried the Zeiss lens yet that takes advantage of the resolution info, but plan to. You can find providers with inscription on the the Zeiss website.

Re: Ask HN: Do your eyes bug you even though your prescription is "correct"?

#298

Post by agastyadsav »

I have a strange problem with my left eye. I wake up every day with either burning or itching sensation only in left eye. Feels better after washing my face and pain either goes away after couple of hours or resurfaces back at the end of the day. I spend around 10-12 hours either staring at my laptop, phone or monitor on a weekday.

Went to ophthalmologists and doctors and they keep claiming that everything is alright. Still not able to figure out what is wrong.

Re: Ask HN: Do your eyes bug you even though your prescription is "correct"?

#299

Post by jbornhorst »

mauvehaus wrote: post #75

I'm not sure I'm entirely on board with the idea that we've got optometry down to the point where anyone can claim to have arrived at the correct prescription without the wearer having tried a bunch and finding what works in reality. Having worn glasses for over 75% of my 40-ish year life, I've come to the conclusion that optometry is as much art as it is science. I think every time I've gone to a new optometrist, I'…

I’d still love to chat for 20 mins if you’re up for it. Want to better understand your frustration with the typical optometry process. I’m at jbornhorst [at] gmail.com.

Re: Ask HN: Do your eyes bug you even though your prescription is "correct"?

#300

Post by jbornhorst »

thastings wrote: post #109

Since it hasn't been mentioned yet, I must add this: when we work and focus, especially when using digital screens, we tend to blink a lot less frequently. If tear composition is not good or there are other exacerbating factors (e.g. an AC with high flow), the break-up of the tear film can easily lead to eyestrain and even blurry vision. In such situations, preservative-free artificial tear drops 3-5x a day can lead…

+1. Something interesting I’ve learned - there can sometimes be a .25 - 1 Diopter difference in the Rx depending on one’s tear film. (Which intuitively makes sense - it’s the surface of the focusing lens, essentially). PF free eye drops have been very helpful for me.
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