yes
Eyes are very sensitive. They must remain hydrated and free of any floating debris found in the air. The eyelids are used to keep the eyes hydrated, and the eyelashes are used to clear debris away from the eye. Those are the uses of the Eyelashes and eyelids.
when you close your eyes they role into the back of your head(and yall said yall couldn't see the back of your head)with is why there are 3 diffrent types of sleep when your eyes rle into the back of your that is a result of you going into R.E.M sleep withc lets you dream Another answer When you close your eyes, blink your eyes do not roll back into your head. They stay the same.
because then it would be a day dream
Not according to my observation. When they sleep, their eyes are still "open" but they do not seem to react to any movement outside the tank. So I think they somehow stop seeing things even with their eyes still "open". I think they are sleeping when they either stop moving and sink to the bottom of the tank, or when they move very little with their fins just to stay afloat. I also noticed that they tend to "raise" their head to a more "upright" position when sleeping. Once I noticed my goldfish did something very cute when she sleeps. She (I presume) hide her head behind a leaf, while resting her body on a small branch of a plant inside the tank.
According to the University of Michigan Kellogg Eye Center, patients who develop Graves' thyroid eye disease can experience bulging eyes or retracting eyelids.
It's called rapid eye movement. Your eyeballs are moving around which gives the impression of your eyelids flickering. This stage of sleep is REM> when you dream you go through 5 stages of sleep. You dream during every REM even if you do not remember it. Stage1 & 2 - You are asleep but not fully asleep. Stage 3 & 4 - You are in a deep sleep, your heart rates slows and breathing becomes shallow. REM (Stage 5)- You being to dream, brain is active, and eyes move about rapidly.
No, they never go to sleep because they have no eyelids. They just sit in the water and rest instead of sleeping. They do not have eyelids because eyelids keep your eyes moisturized, Under the water they have all the moisture they need.
Two eyes, two eyelids. Four. We have two eyelids and the other two eyelids are small pink nictitating membranes that reside in the inner corner of our eyes.
eyelashes are the "hair" protruding out where your eyes are....the eyelids are the skin that folds over your eyes.
If your eyes are weeping and your eyelids are red, you may be coming down with pink eye.
They can not. They do not have 'eyelids'.
your eyelids.
yes
Actually, snakes don't have eyelids. They have scales that cover their eyes. When they molt, the scales on their eyes are replaced.
Actually, snakes don't have eyelids. They have scales that cover their eyes. When they molt, the scales on their eyes are replaced.
they have leathery eyelids to protect their eyes from the harsh sand storms.
Frog eyes have eyelids , both an upper and a lower one.