I can wake up and glance at the time instead of having to lift something up and put it centimetres from my face to tell the time.
I can do sports without the glasses falling off, getting mashed into my face, etc.
I look a lot better, with a -13 prescription, my glasses were heavy and thick
My nose and ears aren’t in pain from carrying the weight of my glasses all the time.
I’m not having to constantly adjust my glasses whenever my nose sweats a bit.
I’m not completely blind any time I have to take off the glasses, like when I take a shower or go in a pool, or especially swim in the ocean where there are big waves.
I’m not utterly helpless because I’m blind if I lose my glasses. If you’re blind without your glasses, and your glasses aren’t where you expect, you can’t really use your eyesight to find them.
I don’t have to deal with all the problems of using and potentially losing contacts.
…
For me, before I got laser surgery, I was once swimming in the ocean at a very big and popular beach. I was wearing contacts because obviously wearing glasses in the water is next to impossible. I got hit by a big wave, tossed around, and lost my contacts. Now I was almost completely blind, in a foreign country where I knew almost nobody, and trying to find my beach towel and bag among thousands of others. I actually can’t remember how I resolved that problem, but I do remember the massive stress and panic being blind like that caused. When I got back from the trip, I got my eyes fixed within a year.
Not necessarily useful to you any longer, but you can utilize a pinhole lens for situations like that. You can even use your hands/fingers to make the lens. You’ll look fucking ridiculous, but I doubt it’s bother you too much when it’s that or being blind.
That has limits. Not sure what it comes down to exactly, but under the most ideal conditions I have pulled off yet, I’d estimate it improves sight by 3-4.
-8 with the fov of a pinhole is still blind.
When your eyes are open and unobscured, light is coming in from every direction. The lens is shaped in such a way that light rays parallel to the eye’s axis are focused on the macula, the center of your sharp vision. A near-sighted (myopic) eye focuses those parallel rays in front of the retina, and a far-sighted (hypermetropic) eye focuses them behind. The farther away the ray is from the eye’s axis, the more it is refracted by the lens, and the more obvious its out-of-focus-ness becomes if the lens has an incorrect shape.
Corrective eyewear works by refracting the light before it enters the eye and essentially cancelling out the lens’ imperfections.
A pinhole works by obscuring light rays that are farther from the axis and contribute to the blurry image, only letting through light rays that are near the axis, already aligned more or less with the macula, don’t have to be refracted as sharply, and don’t contribute as much to the blurry image. This is why the camera obscura works, and why apertures in modern photography are used to control both the image’s exposure and the strength of the depth of field.
The worst one is when you wake up having drunk a little bit too much and you can’t find your glasses. You are now effectively blind and helpless and hungover.
For me, before I got laser surgery, I was once swimming in the ocean at a very big and popular beach. I was wearing contacts because obviously wearing glasses in the water is next to impossible. I got hit by a big wave, tossed around, and lost my contacts. Now I was almost completely blind, in a foreign country where I knew almost nobody, and trying to find my beach towel and bag among thousands of others. I actually can’t remember how I resolved that problem, but I do remember the massive stress and panic being blind like that caused. When I got back from the trip, I got my eyes fixed within a year.
Not necessarily useful to you any longer, but you can utilize a pinhole lens for situations like that. You can even use your hands/fingers to make the lens. You’ll look fucking ridiculous, but I doubt it’s bother you too much when it’s that or being blind.
To expand on that, you make a very small hole by curling your index finger, and look through that hole.
That has limits. Not sure what it comes down to exactly, but under the most ideal conditions I have pulled off yet, I’d estimate it improves sight by 3-4.
-8 with the fov of a pinhole is still blind.
just tried it and it work?? how
When your eyes are open and unobscured, light is coming in from every direction. The lens is shaped in such a way that light rays parallel to the eye’s axis are focused on the macula, the center of your sharp vision. A near-sighted (myopic) eye focuses those parallel rays in front of the retina, and a far-sighted (hypermetropic) eye focuses them behind. The farther away the ray is from the eye’s axis, the more it is refracted by the lens, and the more obvious its out-of-focus-ness becomes if the lens has an incorrect shape.
Corrective eyewear works by refracting the light before it enters the eye and essentially cancelling out the lens’ imperfections.
A pinhole works by obscuring light rays that are farther from the axis and contribute to the blurry image, only letting through light rays that are near the axis, already aligned more or less with the macula, don’t have to be refracted as sharply, and don’t contribute as much to the blurry image. This is why the camera obscura works, and why apertures in modern photography are used to control both the image’s exposure and the strength of the depth of field.
Same reason why squinting also kind of works iirc
The worst one is when you wake up having drunk a little bit too much and you can’t find your glasses. You are now effectively blind and helpless and hungover.
I once had a friend forget to take out his contacts when drunk. He woke up bleeding from his eyes and struggling to get the things out in severe pain…
If I was at home, I always knew where I had some backup glasses. But yeah, wake up at a friend’s house or something and you’re screwed.