Interesting. I've actually been making more use of light mode lately, even for code. Granted, I'm not that old yet but I'm almost 40, and I have astigmatism so dark mode was already difficult to read, but now I feel like its gotten much worse for me.
I lament the lack of good light theme choices though because the majority use dark mode, and dark mode is increasingly becoming the default setting which I don't particularly like, but as long as there's a choice its fine.
I don't do much work on a screen in the dark anymore though to where dark mode would be necessary. My home office is surrounded by big windows with a ton of natural light.
My eye sight got MUCH worse after a covid infection. I was 20/20 or better before covid, now everything is blurry outside of a very narrow distance range, and white anything can hurt. Granted I'm over 50, so I was expecting my eyes to go bad at some point.
The eyes connect to the back of the brain and just above the evolutionary older cortext. When those signals start failing, there's some deeper change going on.
Retinal detachment is one thing that can cause vision loss as we age. My optometrist says that people like me with a strong nearsighted prescription are especially susceptible to it.
Another is high pressure inside the eye, which can lead to glaucoma. Get your eye exams regularly, folks.
I don’t know who on Hackernews first mentioned these red light glasses but bought them for my mom in the hopes it could alleviate some vision problems she was having. After reading the precautions and fine print she was scared to try them, so I figured, why not see if there’s a difference for me. I don’t know how to describe it other than my eyes feel well rested when I use these consistently. I can see better in the dark and depth perception is just slightly better. I’ll use these puppies forever.
> Instead of a single row of data on a spreadsheet, I saw two, one below the other
I have keratoconus, where the cornea loses its shape and creates multiple focal points. I have several focal points in each eye.
It got so bad I couldn't read. So many copies of every letter that text looked like nests of spiders. Not an exaggeration, you could give me a page and a week and I wouldn't be able to decode it.
I also got headaches. Imagine trying to focus when all that does is vary which points in one eye match the other eye. It took a long time for my brain to stop trying.
If I look at a little "power dot" on some device across a pitch-black room, I can clearly see all the focal points, at random distances from a presumed center and each other. And a web of smeared focal lines connecting them.
It sounds cool, but you really don't want a focal web!
Fortunately, surgery involving soaking my cornea with a strengthening substance, and applying lasers to set it, improved my left eye considerably. And then, for unknown reasons, both eyes have improved spontaneously since then.
I feel very lucky to be able to read effortlessly, or at all, again.
For some reason, I sometimes have bad days and see mildly offset multiples. But mostly, the focal points are so closely clustered I don't notice them. Unless I try and read tiny tiny pill-cannister writing.
Now about my damn myopic lenses, ...
For most of my life I had noticeably better than 20/20 vision.
[0] https://en.wikipedia.org/wiki/Keratoconus
(I am happy to say, my eyes never looked anything like that picture. They didn't have any visible misshaping. I think my corneas had subtle soft rippling.)
I'm nearly 49 now. Presbyopia (the loss of ability to close-focus) came on strongly for me at about 46. It was almost like an overnight change. I've also lost significant acuity in low light, but that seemed to come on more slowly.
I got my first bifocals last year. I got the "no line" variety and, so far, I hate them. The focal distances I need for reading, viewing my phone, and other close work are at the absolute bottom of the lens. Likewise, I find the top of bifocal area of the lens interfering with straight-ahead vision sometimes, too.
I'd like to try a set of bifocals with traditional discrete lenses to see if that improves my experience. I'd be curious to hear others' experiences.
re: light - I can definitely tell I have better acuity in bright settings when my irises are "stopped down" to a small pupil. I'm glad of my experience shooting manual focus / aperture cameras because it gives me a good intuition for what the optical instruments in my head are doing.
Edit: Oh, and the damned floater in my right eye. I've had it for 15+ years, and they're not increasing (so it's unlikely a symptom of retinal detachment). Reading on paper or a screen and, oddly, driving, always seems to bring it to the center of my vision. I flick my eye around randomly for a few seconds and it goes away for awhile. I haven't even broached the subject with my ophthalmologist because it's not too bad-- just annoying.
> I got my first bifocals last year. I got the "no line" variety and, so far, I hate them.
They are called progressives (or multi-focal – depending on whom you speak with).
Progressives come in a few «ranges»: near-range, mid-range and all-purpose. There are also «premium» options available, although I am not entirely sure how much different they actually are.
I have found that having two separate pairs of progressives (near-range for reading, laptop use and all-purpose for everything else) works the best. All of them can also be had as the transition variety and with different tint colours, thus obviating the need for a separate pair of shades.
In fact, when I first tried the near-range progressives some 5 years ago, it was an eye-opener in the almost literal sense of the word – the laptop screen flattened and became bigger despite obviously not changing its physical size. It was something that I had struggled with for a long time before the progressives entered mainstream. At high prescription numbers, the lenses for myopia start distorting the true shape of objects which creates mild to substantial visual discomfort, and near-range progressives fix that.
Another source of discomfort might be the suboptimal «Add» number on the script for progressives. This can be fixed by going to an optometrist clinic rather that a street optometrist (or find a reputable and good one first). If the «Add» is too small, the progressives will make little difference compared to conventional lenses, and, if it is too big, they will make it difficult to see in the distance.
Based on own subjective experience, I can't recommend the progressives enough, although a little bit of fine-tuning might be required (none in my case).
Optical engineer here. This is what they don't tell you about continuous/transition/progressive bifocals: optically they don't work. The lens design is an overconstrained optimization problem and the solutions they come up with end up compromising a lot on everything, to the point that it is practically useless.
> I got my first bifocals last year. I got the "no line" variety and, so far, I hate them.
Same. I tried bifocals and they annoyed me to no end. Now it's muscle memory to move my glasses between my pocket and my face. I don't even notice I'm doing it.
I had a congenital cataract removed, and the intraocular implant can’t adjust focus like a normal lens. So I have a similar problem. Progressives suck. Bifocals also suck. Finding an optometrist who was willing to listen, experiment, and adjust three different prescriptions (distance, computer, reading), and then carrying around three pair of glasses also sucks, but it sucks the least. Accepting that this is just a thing that is part of me and that I can’t fully optimize away has made it suck less!
And I have a central floater, too! Also sucks. Sorry you’re in the same boat! Helpful optometrist tells me that vitrectomy is the only real solution and the juice isn’t worth the squeeze. Another thing to accept and move on from.
after COVID i experienced macular degeneration—first in the left eye, later in the right. unfortunately, I was in a rural area of India at the time, and there was no good ophthalmologist available. So the macular degeneration was diagnosed as cataracts; which were also there, but in a nascent stage and not yet the cause of vision problems. So I got a cataract procedure done on the left eye, and it basically changed nothing.
Later I moved to Sri Lanka, where there are good eye hospitals in the local area. There I got a proper diagnosis and was discouraged from a second cataract procedure. I am controlling the macular degeneration by high doses of ocular vitamins. As far as glasses, I also found progressive lenses pretty useless, so I have two pairs: one for distance and one for computer work.
I have keratoconus. It's where there is one or more thin spots in my cornea making my eye pointy in those spots as the internal pressure of the eye pushes out. When I lived in s.f. my ophthalmologist asked me to go to Berkeley to test the students - only one of dozens diagnosed me correctly over a few years.
I had to wear contact lenses since junior high because my eyes were so warped that glasses couldn't correct my vision. This was fine but when I hit fifty I started wondering what I'm going to do when I'm really old - I couldn't see myself caring for my scleral lenses at 80 or whatever.
My eyes started to develop cataracts at 50. I was lucky and found a great eye surgeon who implanted custom toric lenses. I can now see well enough that I can legally drive a car without lenses. I can read books at night on my phone without lenses. I start my day in the morning on the computer programming without lenses but in the afternoon I usually put on reading glasses and continue...
Anyway, I'm so much better off after my cataract surgery than I was before. However I have relatives that are worse off after. I think part of it is my warped eye - I can focus different distances because of it. But also I had a great ophthalmologist which sounds like the major difference.
The lens of the eye usually degrades as you get older.
For most people it becomes inflexible first, and you might have trouble squeezing the lens and it limits your range of focus. This is when most people need reading glasses.
I had problems with cataracts, when the lens further gets cloudy.
Most people eventually get cataracts due to age, but some conditions can speed up the process and you get them earlier.
When I had the problem, I had trouble with glare while driving, and seeing a bright computer screen was a chore.
I switched to dark mode for reading and computer use and it really helped. It was such a relief.
For driving, the glare was like shining headlights on a dirty windshield. Some situations like bright tuner headlights on a rainy night were confusing and required extra care. It helped to use polarized driving glasses, but only a bit.
When this stuff gets to be too much, people get cataract surgery to replace the lens. This operation is pretty well sorted, it takes a few minutes to replace the lens, and most people really enjoy the results.
for me, I chose single-vision lenses. I got very very good 20/20 vision at a distance and used reading glasses for near vision. There are lots of types of reading glasses available and I have lenses for my computer. I can use very small fonts, and dark mode is completely optional.
Funny, but driving at night is a big change. I can see clearly and headlights have switched the type of glare. I can now focus on bright headlights and now the problem is all that light focuses perfectly on probably one cell on my retina and is almost painfully bright.
(there are two kinds of glare - disability glare the kind I used to have, and now discomfort glare with a reaction to the absolute brightness)
oh, and now that I focus at infinity, getting reading glasses is easy. the formula for it is:
1 / distance-in-meters = +x.xx diopters.
So to read your phone at .5 meters, use 1/.5 = +2.00 diopter reading glasses.
Yeah I've got all the fun eye issues of aging and also a decent case of HPPD which adds a lot of snow to my vision. It seemed to get worse after a spate of ocular migraines a few years ago. It almost feels like my optic nerves were a little fried from the migraines.
At about 50 I began getting corneal abrasions. My eyes dry out while sleeping and when I open them in the morning, my eyelid would take a certain amount of my cornea with it. Usually just one eye but sometimes both.
I trained myself to not open my eyes when I wake up. I work them carefully until I feel safe. Sometimes it still happened a few blinks later.
Besides being excruciating, the abrasion mostly blinds me for a few hours. One eye is shot and the other is gushing water. It's a tough way to start the day and I can't recommend it.
For a few weeks afterward, I'll see a 25% halo just above a light source. Together they resemble a parasailer at a distance.
It happens to me when I am taking creatine. As you did, I trained myself to keep my eyes shut until it is safe to reopen them. I do this automatically now.
I got bifocal monthly contact lenses (-7, +2 and correction for astigmatism). It has been such a relief to read screen/phone without needing to wear reading glasses while still seeing far away). The daily soft lenses didn't correct as well as the firmer monthly ones.
The over the counter supplement, Astaxanthin is, when taken once daily, pretty much an opthalmic fountain of youth. YMMV, but I've recommended it to many others who all report its great for age related focusing fatigue.
I'm 50 and my -7 myopia is now joined by early presbyopia.
Buying glasses is a hassle, strong dislike! Bifocals/progressives are expensive. Stores here (nordics) upsell annoyingly, on both frames and lenses. Never regular prices, always sales or 2-for-1 style campaigns. Hard to tell apart quality steps from mere money grab upsells. For progressives different stores offer 3-5 lens qualities, each using vague naming like "better" and "supreme", so cross store price/quality comparison is opaque. Then there's lens thickness options (1.6, 1.67, 1.74 where higher is thinner and costlier). One store said 1.74 is the only feasible option with my -7. Another said 1.6 is ok if I don't mind a thick lens look. Lots of treatment options (basic anti scratch vs more "advanced"). Expensive to just iterate (buy, try, buy differently), especially since the presbyopia will worsen over a period of years, which means buying new again in a year or two.
there's also the factor of display technology. when i got a new laptop with LED-driven display, i couldn't even look at it longer than 5 mins without getting watery eyes. switched back to the vista-era laptop only because of its 1280x800 TFT display - zero issues with that.
32 comments
[ 4.7 ms ] story [ 55.8 ms ] threadI lament the lack of good light theme choices though because the majority use dark mode, and dark mode is increasingly becoming the default setting which I don't particularly like, but as long as there's a choice its fine.
I don't do much work on a screen in the dark anymore though to where dark mode would be necessary. My home office is surrounded by big windows with a ton of natural light.
Higher ambient light with low-blue content (from lights and screens), where the room and screen are matched has several benefits.
Natural light is always best and only light mode screens can match natural light.
https://www.nccdp.org/the-connection-between-dementia-and-vi...
The eyes connect to the back of the brain and just above the evolutionary older cortext. When those signals start failing, there's some deeper change going on.
Another is high pressure inside the eye, which can lead to glaucoma. Get your eye exams regularly, folks.
I don’t know who on Hackernews first mentioned these red light glasses but bought them for my mom in the hopes it could alleviate some vision problems she was having. After reading the precautions and fine print she was scared to try them, so I figured, why not see if there’s a difference for me. I don’t know how to describe it other than my eyes feel well rested when I use these consistently. I can see better in the dark and depth perception is just slightly better. I’ll use these puppies forever.
I have keratoconus, where the cornea loses its shape and creates multiple focal points. I have several focal points in each eye.
It got so bad I couldn't read. So many copies of every letter that text looked like nests of spiders. Not an exaggeration, you could give me a page and a week and I wouldn't be able to decode it.
I also got headaches. Imagine trying to focus when all that does is vary which points in one eye match the other eye. It took a long time for my brain to stop trying.
If I look at a little "power dot" on some device across a pitch-black room, I can clearly see all the focal points, at random distances from a presumed center and each other. And a web of smeared focal lines connecting them.
It sounds cool, but you really don't want a focal web!
Fortunately, surgery involving soaking my cornea with a strengthening substance, and applying lasers to set it, improved my left eye considerably. And then, for unknown reasons, both eyes have improved spontaneously since then.
I feel very lucky to be able to read effortlessly, or at all, again.
For some reason, I sometimes have bad days and see mildly offset multiples. But mostly, the focal points are so closely clustered I don't notice them. Unless I try and read tiny tiny pill-cannister writing.
Now about my damn myopic lenses, ...
For most of my life I had noticeably better than 20/20 vision.
[0] https://en.wikipedia.org/wiki/Keratoconus (I am happy to say, my eyes never looked anything like that picture. They didn't have any visible misshaping. I think my corneas had subtle soft rippling.)
If I remember correctly, it contains some stuff from ordinary grape seeds that helps to orient back the fibers in a vitreous body.
Hence the at least 6 months to understand whether it works or not — new tissue takes time.
I got my first bifocals last year. I got the "no line" variety and, so far, I hate them. The focal distances I need for reading, viewing my phone, and other close work are at the absolute bottom of the lens. Likewise, I find the top of bifocal area of the lens interfering with straight-ahead vision sometimes, too.
I'd like to try a set of bifocals with traditional discrete lenses to see if that improves my experience. I'd be curious to hear others' experiences.
re: light - I can definitely tell I have better acuity in bright settings when my irises are "stopped down" to a small pupil. I'm glad of my experience shooting manual focus / aperture cameras because it gives me a good intuition for what the optical instruments in my head are doing.
Edit: Oh, and the damned floater in my right eye. I've had it for 15+ years, and they're not increasing (so it's unlikely a symptom of retinal detachment). Reading on paper or a screen and, oddly, driving, always seems to bring it to the center of my vision. I flick my eye around randomly for a few seconds and it goes away for awhile. I haven't even broached the subject with my ophthalmologist because it's not too bad-- just annoying.
They are called progressives (or multi-focal – depending on whom you speak with).
Progressives come in a few «ranges»: near-range, mid-range and all-purpose. There are also «premium» options available, although I am not entirely sure how much different they actually are.
I have found that having two separate pairs of progressives (near-range for reading, laptop use and all-purpose for everything else) works the best. All of them can also be had as the transition variety and with different tint colours, thus obviating the need for a separate pair of shades.
In fact, when I first tried the near-range progressives some 5 years ago, it was an eye-opener in the almost literal sense of the word – the laptop screen flattened and became bigger despite obviously not changing its physical size. It was something that I had struggled with for a long time before the progressives entered mainstream. At high prescription numbers, the lenses for myopia start distorting the true shape of objects which creates mild to substantial visual discomfort, and near-range progressives fix that.
Another source of discomfort might be the suboptimal «Add» number on the script for progressives. This can be fixed by going to an optometrist clinic rather that a street optometrist (or find a reputable and good one first). If the «Add» is too small, the progressives will make little difference compared to conventional lenses, and, if it is too big, they will make it difficult to see in the distance.
Based on own subjective experience, I can't recommend the progressives enough, although a little bit of fine-tuning might be required (none in my case).
Usually only happens when I'm tired. Bifocals are probably in my future though.
If I want to do circuit repairs, I have to do it in the morning though. Detail work is too hard on my eyes otherwise.
Same. I tried bifocals and they annoyed me to no end. Now it's muscle memory to move my glasses between my pocket and my face. I don't even notice I'm doing it.
And I have a central floater, too! Also sucks. Sorry you’re in the same boat! Helpful optometrist tells me that vitrectomy is the only real solution and the juice isn’t worth the squeeze. Another thing to accept and move on from.
Later I moved to Sri Lanka, where there are good eye hospitals in the local area. There I got a proper diagnosis and was discouraged from a second cataract procedure. I am controlling the macular degeneration by high doses of ocular vitamins. As far as glasses, I also found progressive lenses pretty useless, so I have two pairs: one for distance and one for computer work.
I had to wear contact lenses since junior high because my eyes were so warped that glasses couldn't correct my vision. This was fine but when I hit fifty I started wondering what I'm going to do when I'm really old - I couldn't see myself caring for my scleral lenses at 80 or whatever.
My eyes started to develop cataracts at 50. I was lucky and found a great eye surgeon who implanted custom toric lenses. I can now see well enough that I can legally drive a car without lenses. I can read books at night on my phone without lenses. I start my day in the morning on the computer programming without lenses but in the afternoon I usually put on reading glasses and continue...
Anyway, I'm so much better off after my cataract surgery than I was before. However I have relatives that are worse off after. I think part of it is my warped eye - I can focus different distances because of it. But also I had a great ophthalmologist which sounds like the major difference.
For most people it becomes inflexible first, and you might have trouble squeezing the lens and it limits your range of focus. This is when most people need reading glasses.
I had problems with cataracts, when the lens further gets cloudy.
Most people eventually get cataracts due to age, but some conditions can speed up the process and you get them earlier.
When I had the problem, I had trouble with glare while driving, and seeing a bright computer screen was a chore.
I switched to dark mode for reading and computer use and it really helped. It was such a relief.
For driving, the glare was like shining headlights on a dirty windshield. Some situations like bright tuner headlights on a rainy night were confusing and required extra care. It helped to use polarized driving glasses, but only a bit.
When this stuff gets to be too much, people get cataract surgery to replace the lens. This operation is pretty well sorted, it takes a few minutes to replace the lens, and most people really enjoy the results.
for me, I chose single-vision lenses. I got very very good 20/20 vision at a distance and used reading glasses for near vision. There are lots of types of reading glasses available and I have lenses for my computer. I can use very small fonts, and dark mode is completely optional.
Funny, but driving at night is a big change. I can see clearly and headlights have switched the type of glare. I can now focus on bright headlights and now the problem is all that light focuses perfectly on probably one cell on my retina and is almost painfully bright.
(there are two kinds of glare - disability glare the kind I used to have, and now discomfort glare with a reaction to the absolute brightness)
oh, and now that I focus at infinity, getting reading glasses is easy. the formula for it is:
1 / distance-in-meters = +x.xx diopters.
So to read your phone at .5 meters, use 1/.5 = +2.00 diopter reading glasses.
My computer screen works out to +1.25 diopter.
Really close project stuff is +3.0 or more
https://en.wikipedia.org/wiki/Cataract
https://en.wikipedia.org/wiki/Glare_(vision)
https://en.wikipedia.org/wiki/Dioptre
I trained myself to not open my eyes when I wake up. I work them carefully until I feel safe. Sometimes it still happened a few blinks later.
Besides being excruciating, the abrasion mostly blinds me for a few hours. One eye is shot and the other is gushing water. It's a tough way to start the day and I can't recommend it.
For a few weeks afterward, I'll see a 25% halo just above a light source. Together they resemble a parasailer at a distance.
Buying glasses is a hassle, strong dislike! Bifocals/progressives are expensive. Stores here (nordics) upsell annoyingly, on both frames and lenses. Never regular prices, always sales or 2-for-1 style campaigns. Hard to tell apart quality steps from mere money grab upsells. For progressives different stores offer 3-5 lens qualities, each using vague naming like "better" and "supreme", so cross store price/quality comparison is opaque. Then there's lens thickness options (1.6, 1.67, 1.74 where higher is thinner and costlier). One store said 1.74 is the only feasible option with my -7. Another said 1.6 is ok if I don't mind a thick lens look. Lots of treatment options (basic anti scratch vs more "advanced"). Expensive to just iterate (buy, try, buy differently), especially since the presbyopia will worsen over a period of years, which means buying new again in a year or two.
If you’re unlucky, it’s a retinal detachment and you need medical attention to keep your vision.
If you’re very lucky, it was only flashes and you’ve had a specific type of migraine.
If you’re lucky, it’s posterior vitreous detachment which usually heals on its own.