Yes, there are conditions that cause people to be born without eyelids. They must continually receive eye drops until the condition can be fixed via surgery.
yes
Snakes do not have eyelids because they have evolved to have a protective layer called a spectacle or brille over their eyes. This clear scale helps keep their eyes moist and protected without the need for traditional eyelids.
Use Toothpick I heard.
The main purpose of eyelids is to moisten the surface of the eye, which in terrestrial vertebrates (like you and I) is nessesary to provide the eye with lubrication to move. Underwater, the eye is lubricated by the water, and kept moist without effort, thus the eyelids are not present because they don't need to be there. Interestingly, although it may seem that eyelids are the norm, the majority of species with eyes don't have eyelids. Insects for example.
The purpose of people wanting to get double eyelids due to the fact they want to look like the rest of the people. Usually, it's Asians that don't have double eyelids. Some do it to look cute, others do it to build up self-esteem.
crocodiles do because their eyes are abnormally without eyelids and they can't blink
no they dont have eyelids
-Eyelid tape can give you double eyelids temporarily for a day, but if it is worn for a long period you may develop permanent double eyelids -Eyelid glue lasts until you wash it off, and can also give you permanent double eyelids if worn long enough -Some people naturally grow into double eyelids over time, usually during highschool or college.
Dogs actually have 3 eyelids.
3 eyelids
Yes, dinosaurs did have eyelids.
3 eyelids