What are the safe pockets for the eyes which are present in skull
Answers
Explanation:
As we grow older, tissues around the eye gradually weaken and sag. This loss of skin tone allows fat to shift forward into the lower eyelids, making them look puffy and swollen. Fluid can also pool in this area and contribute to the puffy appearance.
Shadows may also appear under the eyes. They may be cast by swollen, puffy eyelids due to aging.
Other factors can contribute to under-eye bags, including:
Not getting enough sleep
Smoking tobacco
Allergies
Retaining fluid (often after waking up, or after eating salty food)
Inheriting this condition (it can run in families)
While having bags or shadows under your eyes may not look especially attractive, it is usually harmless. However, if swelling of the eye area is painful, itchy, red or does not go away, see your ophthalmologist.
I hope it will help you
Explanation:
In a single glance, our eyes work with our brains to tell us the size, shape, color, and texture of an object. They let us know how close it is, whether it's standing still or coming toward us, and how quickly it's moving.
Only part of the eye is visible in a person's face. The whole eye — the eyeball — is about the size and shape of a ping-pong ball.
All parts of the eye are extremely delicate, so our bodies protect them in several ways. The eyeball sits in the eye socket (also called the orbit) in the skull, where it is surrounded by bone. The visible part of the eye is protected by the eyelids and the eyelashes, which help keep dirt, dust, and even harmful bright light out of the eye.
Eyes are also protected by tears, which moisten them and clean out dirt, dust, and other irritants that get past the defenses of the eyelashes and eyelids. Tears also help protect against infection.
With each blink, our eyelids spread a layer of mucus, oil, and tears over the cornea, which covers the front of the eye. The lacrimal (pronounced: LAK-ruh-mul) glands in the upper outer corner of each eye socket produce tears, which, after moistening the eyes, flow into canals in the eyelids. These canals drain into the lacrimal sac, a pouch in the lower inner corner of each eye socket. Tears then exit through a passage that leads to the nose.
To see, the eye has to move. Six extraocular muscles surround the eyeball and act like the strings on a puppet, moving the eye in different directions. The muscles of each eye normally move together at the same time, allowing the two eyes to remain aligned.
How Do We See?
The wall of an eyeball has three layers, rather like the layers of an onion:
The sclera (pronounced: SLEER-uh) is the protective layer. This tough, fibrous tissue surrounds the eyeball and attaches to the cornea, which is the clear front surface of the eye. What we see as the white of the eye is the sclera. Over the sclera lies the conjunctiva, a clear skin layer that protects the eye from becoming dry.
The choroid (pronounced: KOR-oyd) is the middle layer that contains blood vessels that deliver oxygen and nutrients to the inside parts of the eye.
The retina (pronounced: RET-nuh), the innermost of the three layers, lines the inside of the eyeball. The retina is a soft, light-sensitive layer of nervous system tissue. The optic nerve carries signals from the retina to the brain, which interprets them as visual images.
The space in the center of the eyeball is filled with a clear jelly-like material called the vitreous (pronounced: VIH-tree-us) humor. This material allows light to pass through to the retina. It also helps the eye keep its round shape.
Vision is the process by which images captured by the eye are interpreted by the brain, and the visible part of the eye is where the process of sight begins. On the front surface of the eye is the see-through, circle-shaped cornea. You can't see a person's cornea the way you can see the colored part of the eye behind it — the cornea is like a clear window that focuses light into the eye.
Behind the cornea is a watery fluid called the aqueous humor. The cornea and aqueous humor form an outer lens that refracts (bends) light on its way into the eye. This is where most of the eye's focusing work is done.
The colored circular membrane in the eye just behind the cornea is called the iris. The iris controls the amount of light entering the eye through the pupil, which is the opening in the center of the iris that looks like a tiny black circle.
Like a camera, which controls the amount of light coming in to prevent both overexposure and underexposure, the iris becomes wider and narrower, changing the size of the pupil to control the amount of light entering the eye. The pupil gets bigger when more light is needed to see better and smaller when there's plenty of light.
The eye's lens sits just behind the iris. Just like a camera lens, the eye's lens focuses light to form sharp, clear images. Light that has been focused through the cornea and aqueous humor hits the lens, which then focuses it further, sending the light rays through the vitreous humor and onto