Borrowed from Rasputin:
http://library.thinkquest.org/11922/reptiles/snakes.htm
A snake's eyes are rounded and with lenses adjustable for distance vision. With the exception of the blind snakes, the eyes of a snake are permanently covered and protected by a transparent lower eyelid (called a spectable or brille). The fusion of the eyelids does not allow a snake to blink or close their eyes. Since the snake lacks external ear openings and eardrums, they hear by using their head to pick up vibrations and sounds from the ground. Experiments have shown that snakes can hear airborne sounds as well, although not well.
Snakes cannot close their eyes - they have no eyelids.
they have no eye lids
There is a hypothesis as to why snakes do not have eyelids. Zoologists and scientists claim that the snakes evolved a transparent eyelid because it protects their eyes while they are burrowing. They would imply that snakes originally evolved on land and as burrowers.
Snakes do not have eyelids like mammals, so they cannot physically close their eyes. Instead, their eyes are protected by a transparent scale called a spectacle, which covers and lubricates the eye to keep it moist and prevent damage.
Lizards and snakes are both reptiles; they have scaly skin, they lay eggs, they have generally similar physiology (although lizards have legs and snakes don't).
No
most snakes cant see very well or not at all with their eyes. They rely on their forked tongues to smell and sense things
No, snakes do not have eyes on their tail. Snakes see by flicking their tongue "to taste the air".
Snakes have no eyelids. It is one of the distinguishing characteristics of snakes. They also have no ears. * Before somebody brings it up, the glass snake has eyelids and ears, but that is because it is not a snake. It is a legless lizard.
Yes, just close your eyes and if the you cant see the person the person cant see youYours, sincerelyMr. Big Brain
No, snakes do not see through their eyelids. When snakes close their eyes or "blink," they are not able to see. They rely on their other senses, such as heat-sensing pits and tongue-flicking for sensing their environment when their eyes are closed.
They don't have eyelids so they don't close their eyes, and I believe most of them will sleep underground, or in a hiding place.