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retina
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How many eyes does a typical person have?
Three. The first is the most noticeable. It is the outer eyelid that cover the others. The middle eyelid is brown or pink and covers the thinnest eyelid which is transparent and block out dust stopping it from entering the eye.
What is orbital tissue?
tissues found around the orbit of the eyes
Are eyeballs squishy?
Biological systems such as the human body are good at making transparent material, such as the aqueous humor in eyes, and they are also good at making strong inflexible material such as bone, but they are not good at making material that is both transparent and strong. Eyes have to be transparent in order to see, therefore that was the priority, rather than physical strength. Of course, we do know how to make glass, which is both transparent and strong, but that is technology, not biology. Biological systems haven't figured out how to make glass.
Is a snakes eyes naturally open?
snakes eyes are always open, they do have an inner membrain though that keeps their eyes lubricated They don't have eyelids,but they do have an ocular scale called a brille . This brille offers some of the functions of the eyelid by keeping the eye moist and free of dust. It is shed with the skin when the snakes is molting.
What is the tissue that makes up organs that are able to contract or shorten?
Muscle tissue makes up organs that are able to contract and shorten.
What is the transparent fron of the eye?
That would be called the cornea. It's the transparent layer covering your eyes.
Why are snake eyes transparent?
Evolution I guess. Instead of having closable eyelids, their eyes are protected by a transparent scale (called the 'brille') Under the surface, the eyeball can still move.
What are the ratings and certificates for Eyes in Outer Space - 1959?
Eyes in Outer Space - 1959 is rated/received certificates of: USA:Approved
What is the transparent membrane that covers the eyes of the human?
i believe it is called the scleraderma
When was Cover Your Eyes created?
Cover Your Eyes was created on 2007-06-05.
What actors and actresses appeared in Eyes in Outer Space - 1959?
The cast of Eyes in Outer Space - 1959 includes: Paul Frees as Narrator
Are eyelids opaque?
A human eyelid is not transparent of course. But some animals like snakes have permanently sealed transparent eyelids which protect their eyes from foreign materials. Frogs also have transparent eyelids to protect its eyes while swimming in water.
What is the protective cover on the frog's eye that helps it see underwater?
Crocodilians have a transparent nictating membrane which serves as a secondary eyelid. This inner eyelid moves from the sides while the outer eyelid moves up and down. When this transparent eye-lid is engaged, it does limit visual ability somewhat, especially in muddy, darker water. However, it protects the main eye from damage that may be caused by debris in the water (or even during scuffles with fellow crocodilians). When visual ability is limited, crocodilians have a keen sense of smell to help back them up.
Does a camel have eyelids?
With their eyes. They also have long lashes to filter out sand so they can see through mostly closed eyes during sandstorms.
How many eyes does a earthworm have?
Earthworms don't have eyes, but they do have light-sensitive cells scattered in their outer skin.
How do american aligators eyes adapted for seeing in the water?
They have a transparent membrane that covers the eye when they submerge.
Why the skull don't have eyes?
Skull is bone (hard), eyes are soft tissue and decay away.
