What are floaters?
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Cornea: The cornea is the transparent circular front of the eye. It focuses light into the eye, onto the lens and then to the retina.
Retina: When light passes through the eye, an image is formed on the retina at the back of the eye. The retina is a light-sensitive nerve layer that sends information about the image to the brain. When shadows are cast on the retina, they can appear as eye floaters.
Optic Nerve: The optic nerve is at the very back of the eye and connects your eye to your brain. It receives impulses from the retina which instruct it to send images to the brain. If floaters have cast a shadow on the retina, those spots will block the image.
Floaters: Floaters are collagen protein fibers that have clumped together in the vitreous and move around your eye. Smaller clumps may not affect your vision, but larger ones cast shadows on the retina and corrupt your vision. Floaters can look like black or gray dots, squiggly lines, threadlike strands, cobwebs, or rings.
Lens: The lens is the transparent structure behind the pupil that helps to refract light to the back of the eye and focus it onto an image on the retina. It changes shape so that the eye can focus on objects at different distances.
Vitreous: The vitreous is the gel-like substance that makes up most of the eye and gives it a round shape. Within the vitreous, there are collagen protein fibers that can clump together as you age. When light enters the eye, the shadows of these clumps appears as a floater in your vision.
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