this post was submitted on 05 Jun 2025
15 points (100.0% liked)
Greentext
6857 readers
959 users here now
This is a place to share greentexts and witness the confounding life of Anon. If you're new to the Greentext community, think of it as a sort of zoo with Anon as the main attraction.
Be warned:
- Anon is often crazy.
- Anon is often depressed.
- Anon frequently shares thoughts that are immature, offensive, or incomprehensible.
If you find yourself getting angry (or god forbid, agreeing) with something Anon has said, you might be doing it wrong.
founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
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.
Just tried this and am now reading comments below to learn what the actual fuck. That works. This random internet advice isn't a lie.
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