MamasHealth.com Home Organs and Glands Adrenal Appendix Bladder Brain Digestive system Eye Gall Bladder Heart Intestine Kidney Liver Lungs Organ donors Organ transplants Ovaries Pancreas Prostate Spleen Stomach Thyroid Self-defense Escape a two-handed choke hold Escape from a knife attack Escape from a choke hold Escape abduction attempt Escape a choke hold Escape a elbow grab Escape a knife attack Escape a two-handed choke hold Escape a wrist grab Power strike Chocolate Relief: Mama shares how to get free chocolate MamasHealthBlog.com Email Mama Make money during a recession Bone marrow donor	What is an Eye? An eye is a round-shaped organ that works with the brain to provide us with vision. The shape of the eye is maintained by the pressure of the aqueous humor. The aqueous humor is the fluid that fills the front chamber of the eye. Function of the Eye The main function of the eye is to work with the brain to provide us with vision. The eye and brain translate light waves into a sensation we call vision. Eye Parts The eye has many parts. Some of the main parts are listed and described below. lens The transparent crystalline lens of the eye is located immediately behind the iris. cornea The cornea is a transparent dome which serves as the outer window of the eye. The cornea is the most powerful structure focusing light entering the eye. retina The retina is the innermost layer of the eye. It is composed of nerve tissue which senses the light entering the eye. The retina sends impulses through the optic nerve back to the brain, which translates the impulses into images that we see. There are 4 types of light-sensitive receptors found in the retina rods cones that absorb long-wavelength light (red) cones that absorb middle-wavelength light (green) cones that absorb short-wavelength light (blue) pupil The pupil is the hole in the center of the eye where light passes through. iris The iris is the colored part of the eye. It is a thin diaphragm composed mostly of connective tissue and smooth muscle fibers. The iris lies between the cornea and the crystalline lens. optic nerve The optic nerve is a continuation of the axons of the ganglion cells in the retina. It acts acts like a cable connecting the eye with the brain. The optic nerve is also called the cranial nerve II. sclera The sclera is the white, opaque portion of the eye. It provides protection and serves as an attachment for the extraocular muscles which move the eye. Eye Doctor An eye doctor is called an opthamologist. Periodic eye examinations by an opthamologist is the best defense against eye disease. You can also receive eye care from an optometrist or optician. An optometrist is a college graduate who has received 4 years of training and is licensed to diagnose and treat vision problems and prescribe glasses and contact lenses. An optician is a person trained to prepare and fit glasses after an opthamologist or optometrist has examined your eyes and prescribed vision correction. Diseases/Conditions of the Eye Some common conditions that afflict the eye are listed below. Glaucoma Farsightedness Nearsightedness Pink Eye Sty Blindness Astigmatism Tumors Infections Cataracts Dry Eye Syndrome Macular Degeneration Ectropion Entropion Bumps on the eyelid Warning Signs of Eye Problems Difficulty adjusting to darkness Double vision Red eyes Crusty or swollen eyes Recurring pain in or around the eyes Excessive tearing or watering Very dry, itchy or burning eyes Loss of peripheral vision Dark spots in the center of your viewing area Change in color of the colored part of your eye Vision that suddenly becomes blurred or hazy	Sign up for our Email Newsletter For Email Marketing you can trust
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