Timeline for How deep under water can humans open their naked eyes without damaging them?
Current License: CC BY-SA 4.0
14 events
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| Feb 16, 2023 at 0:11 | comment | added | U. Windl | The answer is incomplete, because at a depth of 100m the partial pressure of oxygen and nitrogen will probably kill your nerves (specifically the brain) (or at least make them inoperative). So there are special gas mixtures used then. For normal air the nitrogen-induced limit is around 56m. | |
| Feb 15, 2023 at 13:06 | history | edited | bandybabboon | CC BY-SA 4.0 |
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| Feb 15, 2023 at 8:37 | comment | added | Ivo | @GoalaSestant I didn't know. Thanks for telling me | |
| Feb 15, 2023 at 1:19 | comment | added | Gregory Currie | @GoalaSestant I'm guessing a lot of people are not aware, which is probably why you should amend your answer. I don't have a great understanding of what scuba gear protects, or when that protection is removed. | |
| Feb 14, 2023 at 19:24 | comment | added | bandybabboon | @Ivo did you know that scuba equipment doesn't protect the eyes from water and water pressure, and scuba divers regularly take off the mask underwater and fill it with water to get rid of condensation and other reasons? youtu.be/PuVXxj70s1w?t=38 | |
| Feb 14, 2023 at 14:15 | comment | added | bandybabboon | @Mast There is no evidence beyond 325m but that's a good start for a general idea. Swimmers use goggles, goggles can't equalize pressure, divers use masks where they equalize the water pressure, it's easy to take the mask off at any depth. Opening the eyes underwater at 325 meters is fine. | |
| Feb 14, 2023 at 14:06 | comment | added | Ivo | @GoalaSestant that's with scuba equipment | |
| Feb 14, 2023 at 14:05 | comment | added | bandybabboon | @Ivo He said how deep and why, I said 325m is still ok, no evidence beyond that and some reasons. | |
| Feb 14, 2023 at 11:24 | comment | added | KaPy3141 | Yes, it does answer the question. Face and mask of the diver could never withstand such a pressure difference, meaning that the diver needed to equalize the pressure, which is normally done by taking of the mask and blowing (high-pressure) air inside. Descending so quickly, there is a chance that you can't get the mask off your face if you wait too long, meaning that pressure would build up until implosion, which would pose an enormous health risk. For this reason, such records are generally done without wearing a mask, while descending. The answer is that eyes are not the bottleneck. | |
| Feb 14, 2023 at 10:14 | comment | added | Mast | The question explicitly states "without using goggles". Goggles/masks are included in scuba equipment. | |
| Feb 14, 2023 at 9:42 | history | edited | bandybabboon | CC BY-SA 4.0 |
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| Feb 14, 2023 at 7:52 | comment | added | Ivo | This doesn't answer the question at all. | |
| Feb 13, 2023 at 21:02 | history | edited | bandybabboon | CC BY-SA 4.0 |
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| Feb 13, 2023 at 17:30 | history | answered | bandybabboon | CC BY-SA 4.0 |