system
Given the following post, respond as if you're commenting on Reddit:
human
Can our eyes feel temperature?

I know this sounds dumb but I noticed today while it was near freezing that my eyes are the only part of my face that wasn’t immediately or subsequently cold. Is this just because we blink a lot, or smaller blood vessels, or what?
gpt
Yes. The cornea (the transparent part over the iris and pupil) has unmyelinated nerve endings sensitive to touch, temperature and chemicals. Triggering those nerves causes an involuntary reflex to close the eyelid. The sclera (the white part) also has these same nerves, and similar signals will also trigger the involuntary closure of the lid.