What struck me here is how much "good UI" changes with age
as most "U's" do :)
Aging and Eye Problems
71–80 of 89 posts
Re: Aging and Eye Problems
#72I'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…
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 n…
FDA approved red light therapy. About USD $100 for device.
Re: Aging and Eye Problems
#73Earlier quoted context omitted.
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.
What's your lay of the land when it comes to different glass qualities and glass thickness options? Stores here (nordics) have around 4 different glass qualities for progressives, with varying and opaque names like "better" and "supreme". Thickness starts with 1.6 but store people push for 1.67 or 1.74. I get strong upselling vibes, but hard to say. (Is the "supreme plus" noticeably better than "supreme" or merely th…
Search HN for "ABBE". The very cheapest material has the highest optical quality. Thinner ones are for weight, which matters if you have strong prescriptions. Weight can also be countered with a smaller frame height/width, which might require a vintage or designer frame, but that's a one time cost that can used with cheaper and higher optical quality lens replacements.
Re: Aging and Eye Problems
#74Earlier quoted context omitted.
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.
But for actual use, especially screens and reading, the tradeoff can be pretty bad
Search for "Chemistrie" magnetic lens attachment in +0.5 increments. They can even stack for different focal lengths, e.g. reading vs computer screen at 36". Magnets embed in primary glasses. Expensive via local opticians, they will retrofit via mail order and buychemistrie dot com.
Re: Aging and Eye Problems
#75Earlier quoted context omitted.
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.
> to the point that it is practically useless. And yet I know many people who use them and love them. So?
The human brain mostly adapts. Big Optical makes $$$$ billions. A small percentage of human brains have persistent dizziness and depth perception errors, which can lead to physical injury and reduced quality of life. We don't have yet have a test funded by disablity insurance, which can determine which brains might fail to adapt.
The good news is that multiple glasses have never been cheaper or more accessible, so progressives are entirely a choice.
Re: Aging and Eye Problems
#76Earlier quoted context omitted.
Oh so much. Progressives here. The very bottom irritates me to no end during the day. If I drive in the morning or walk around I feel absolutely horrible. Like I'm drunk. Sure, if I need to read something really really close on my phone in the evening, when the eyes have gone tired it's kinda OK. I do need to focus on the bottom of the glasses. But I still (after months) usually just look straight ahead (sometimes th…
I'm trying progressive lenses again after throwing them in the trash a few years ago. The distortion is the worst part for me. Moving my head around makes the world warped as it moves between zones. Maybe I'd get used to it if I forced myself to wear them all the time but I spend most of my day WFH and wearing a weak version of my distance prescription that lets me focus on my monitor yet see reasonably well around t…
Progressives maximize legal compliance for automobile driving, with bonus impact on optical industry profits.
Multiple lenses for different focal lengths are now affordable and practical and offer higher optical quality and more comfort.
Re: Aging and Eye Problems
#77Interesting. 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 particu…
Lower ambient light, including dark mode, leads to pupil dilation, which is a loss of about 0.5 diopters.
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.
Re: Aging and Eye Problems
#78I'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 li…
See Chemistrie, https://news.ycombinator.com/item?id=48427032
Re: Aging and Eye Problems
#79The 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.
Thanks for the pointer.
Re: Aging and Eye Problems
#80PSA: if you have floaters, try VitroCap for at least 6 months. It doesn’t help everyone, but makes life much easier for some like my mother 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.
There are no fibers in a vitreous body. Nor does it contain tissue. Just for fun: if you ever had eye surgery, there's a 50/50 chance the machine used is the one I designed.
Literally wiki: vitreous collagen is organized as thin *fibrils* 10–25 nm in diameter with cross-striations.
Or did you come here to say that ackkhhualy fibrils are not fibers and gel-like structure is not a tissue? :-) English is not my native language so excuse me for not knowing 50 words for snow.
Regardless of the terms, are you saying vitrocap cannot help orient those fibrils, reduce clumps / improve transparency of collagen and what have you to alleviate floaters?