2 ms·
IR lasers, too. Your pupils won't contract because they don't see the light, and a lot of damage can be done very quickly. You might not notice it immediately e
by tiedieconderoga 4y ago
IR lasers, too. Your pupils won't contract because they don't see the light, and a lot of damage can be done very quickly. You might not notice it immediately either, because your brain can paper over small bits of retinal damage to maintain a complete image, like it does with your ocular nerve blind spots.
Lasers are super cool, but I wouldn't DIY one unless I could keep it in a goggles-only room with interlocks on the door to cut power.
- jakzurr 4y agoBoth good comments. I love the article, but the "Safety Remarks" probably shouldn't have been so far down in the text!
- totetsu 4y agoI have some retinal damage from an unknown source. All I remember is one morning on the way to school mentioning that there was a spot in my vision that was dark like after looking at the sun, but it hadn’t gone away for hours. over 15years later it never went away, but it is indeed papered over by my brain. Still not sure if it was something internal, or if I played with the wrong end of a laser pointer.
- gwillen 4y agoI got something like that not long ago, and it was diagnosed as acute macular neuroretinopathy. Luckily, in many cases it apparently resolves on its own, and mine did. Was the spot slightly off-center in your vision? That's where it tends to happen. As I recall, it's fairly random and fairly rare, but apparently it's been seen a bit more during COVID.
- totetsu 4y agoMine is a cone shape extending out from my natural blind spot with the point ending just before the center of vision. so It's easy to miss with both eyes open. If I close one eye and look at a word, the word a few words to the right is.. a strange blur of the colours around it.