system
Given the following post, respond as if you're commenting on Reddit:
human
How come our eyes don't feel cold when it's frigid temperatures outside?
gpt
The only portion of the eye that has thermoreceptors is the cornea, which is a terribly small surface area. That being said, I've spent a good deal of time outside in -15 to -45 windchill. At a certain temperature, your eyes start to feel gummy upon blinking-which isn't temp but texture sensations- and they start to sting and water quite a bit. I'd say you haven't been cold enough.