I did my eyes yesterday, what is the sweat on the front of my eyes??

Yesterday, I made an incision with eye correction (opening), and at the end of the surgery, it stings~ And then, there was a stitch on the front of the eye? After the surgery, they schedule things like stitches, but the stitches that came out had to be pulled out on the 3rd day, and the rest of the line stitches had to be pulled out on the 5th day, so they told me to come twice. In case yes, even if you answer only like this, Im curious as to what the function is or why it was done... hahahaha Does anyone know?? Did you do this because you were afraid that the hair in front of you would stick too much??