Which is the colored part of the eye?
The iris is the colored part of the eye that regulates the amount of light entering the eye. Lens: The lens is a clear part of the eye behind the iris that helps to focus light, or an image, on the retina. Macula: The macula is the small, sensitive area of the retina that gives central vision. It is located in the center of the retina. Optic nerve:
How does the pupil of the eye adjust to light?
The pupil changes size to adjust for the amount of light available (smaller for bright light and larger for low light). This opening and closing of light into the eye is much like the aperture in most 35 mm cameras which lets in more or less light depending upon the conditions.
Which is part of the eye senses light?
Retina. The light-sensitive nerve layer that lines the inside of the back of the eye. The retina senses light and creates impulses that are sent through the optic nerve to the brain.
Why are the different parts of the eye important?
Knowing the different parts of the eye can help you understand how you see and what you can do to help keep the eye functioning properly. The eye is one of the most complex parts of the body. The different parts of the eye allow the body to take in light and perceive objects around us in the proper color, detail and depth.
What makes up the back of the eyeball?
The retina converts light into electrical impulses that are sent to the brain through the optic nerve. Vitreous gel: The vitreous gel is a transparent, colorless mass that fills the rear two-thirds of the eyeball, between the lens and the retina.
Where are the rods and cones located in the retina?
Thus in central retina the cones are closely spaced and the rods fewer in number between the cones (Figs. 9 and 10). The outer nuclear layer (ONL), composed of the cell bodies of the rods and cones is about the same thickness in central and peripheral retina.
Which is part of the eye makes the tear film?
Tears lubricate the eye and are made up of three layers. These three layers together are called the tear film. The mucous layer is made by the conjunctiva.
How does the anterior chamber of the eye work?
Anterior chamber: The anterior chamber is the front part of the eye between the cornea and the iris. The iris controls the amount of light that enters the eye by opening and closing the pupil. The iris uses muscles to change the size of the pupil.
Where are the blood vessels located in the eye?
Anatomy of the Eye. Choroid. Layer containing blood vessels that lines the back of the eye and is located between the retina (the inner light-sensitive layer) and the sclera (the outer white eye wall). Ciliary Body. Structure containing muscle and is located behind the iris, which focuses the lens. Cornea.
How does the colored part of the eye help regulate light?
The colored part of the eye which helps regulate the amount of light entering the eye. When there is bright light, the iris closes the pupil to let in less light. And when there is low light, the iris opens up the pupil to let in more light.