What are the outside parts of the eye?
Think of the sclera as your eyeball’s outer coat. Look very closely at the white of the eye, and you’ll see lines that look like tiny pink threads. These are blood vessels, the tiny tubes that deliver blood, to the sclera. The cornea (say: KOR-nee-uh), a transparent dome, sits in front of the colored part of the eye.
What are the 3 layers of the exterior of the eye?
The eye is made up of three layers: the outer layer called the fibrous tunic, which consists of the sclera and the cornea; the middle layer responsible for nourishment, called the vascular tunic, which consists of the iris, the choroid, and the ciliary body; and the inner layer of photoreceptors and neurons called the …
Can you tear the outer layer of your eye?
A corneal abrasion is a scratch or cut (abrasion) of the clear outer layer (cornea) of the eye. Injury (trauma) is the most common cause for corneal abrasions. The most common trauma causes are: Scratches from fingernails (human and animal)
What is the skin around the eye called?
The Surface of the Eye The surface of the eye and the inner surface of the eyelids are covered with a clear membrane called the conjunctiva.
What is the thing on the side of your eye?
What is it? The nasolacrimal duct is known to you and me as the tear duct. It’s the area found in the corner of your eyes, closest to the nose.
What is the anatomy of the eye?
The eye is our organ of sight. The eye has a number of components which include but are not limited to the cornea, iris, pupil, lens, retina, macula, optic nerve, choroid and vitreous. Cornea: clear front window of the eye that transmits and focuses light into the eye.
What is the outer corner of the eye called?
Canthus (pl. canthi, palpebral commissures) is either corner of the eye where the upper and lower eyelids meet. More specifically, the inner and outer canthi are, respectively, the medial and lateral ends/angles of the palpebral fissure.
What are the two parts of the outer layer of the eye?
The outer layer contains the sclera (the white of the eye) and the cornea (the clear dome at the front of the eye).
What is the hole in the corner of your eye?
Lacrimal duct obstruction The tiny hole at the inner corner of each eye leads to the lacrimal duct, which drains tears from your eye into your nose. When the duct becomes blocked, it can become inflamed or infected. The area will swell and may discharge pus.
What purpose does the outer layer of the eye serve?
They consist of different tissue and serve different functions. The eye’s outer layer is made of dense connective tissue, which protects the eyeball and maintains its shape . It is also known as the fibrous tunic. The fibrous tunic is composed of the sclera and the cornea.
What is the tough outer layer of the eye?
Sclera is the outer layer of the eye and is white ,tough,protective layer.
What is the inner layer of the eye?
Inner Layer of the Eye. The inner layer of the wall of the eye consists of the retina, which contains the visual receptor cells (photoreceptors). The retina is a nearly transparent sheet of tissue continuous with the optic nerve in the back of the eye and extending forward as the inner lining of the eyeball.
What are the parts of the eye and their function?
The human eye works by sending light through a series of specialized parts to the optic nerve directly to the brain. Light-processing parts include the cornea, pupil, crystalline lens, retina, and finally the optic nerve itself. Each part of the eye has a specific task to help the brain receive signals that it can translate into usable visual input.