Everyone at one time or another has experienced some sort of eye discomfort. If you have experienced eyes that are tired, bloodshot, burning, dry, infected, irritated, itchy, sensitive to light, ulcerated, or watery, then information on keeping the eyes healthy will be important to you.
The human eyeball is approximately an inch in diameter and spherical in shape. The outer layer is the â€˜white of the eyeâ€™ to which six muscles are attached that move the eyes, and one that moves the eyelid. The cornea is a clear transparent layer at the front of the eyeball and is an extension of the white of the eye or sclera. Beneath the cornea, is a dark brown membrane, the iris, containing a pigment called melanin. In the center of the iris is a small opening, which can be expanded or contracted by the muscles of the iris in response to the amount of light present. This opening is called the pupil, and directly behind it is the lens. The inner layer of the eyeball is the retina.
The act of seeing is actually a complex, multi-step process that goes on continuously and at breathtaking speed. In perceiving an object, light rays go through the cornea and body of watery fluid, and through the iris to the lens. The lens inverts the image on the retina, turning it upside down. The brain re-interprets this image so that it is perceived upright. The shape of the lens is changed by muscles to focus the light rays properly onto the retina. Corresponding images from both eyes are interpreted by the brain as single, fused image.
Eye problems can be caused by injury, eyestrain, allergies, wearing contact lens too long, and many cases of eye damage and vision loss are linked to underlying diseases of one type or another. Diabetes can lead to hemorrhages in the retina and the vitreous, and can lead to blindness. Early cataracts also may be related to diabetes. High blood pressure produces a gradual thickening of the blood vessels inside the eyes that can result in visual impairment and even blindness.
Poor diet, vitamin deficiency, and infections can cause damage to the eyes. One of the diseases of the eye is conjunctivitis, called pinkeye, which is an inflammation of the mucous membrane that lines the eyelid and covers the white portion of the eye with symptoms that include watering, redness, swelling, itching, and pus in the membrane. Causes may be by allergy, bacteria, virus, smoke, dust, or chemical irritants. Bacterial or viral infections are highly contagious.
Glaucoma is a disease of the eye caused by increased pressure inside the eyeball and hardening of the eyeball surface. Symptoms of glaucoma are eye pain especially in the morning. Reduced side vision, rainbow halo around lights, and inability to adjust to a darkened room. Other conditions of the eye include inflammation of the iris, night blindness, Bitot's Spots, amblyopia, near-sightedness, far-sightedness, macular degeneration, floaters, dry eyes, diabetic retinopathy, colorblindness, cataracts, blurred vision blepharitis, and astigmatism.
Regular checkups and care of an ophthalmologist, optometrist, or an optician will help keep your eyes healthy and disease free. The market today also offers a variety of home eyecare instruments that will assist in monitoring the health of your eyes in your home such as opthalmoscopes, and instruments that will measure eye pressure. The market is constantly changing and offering state of the art eye home products helping us to see more clearly.
There are simple things you can do to keep your eyes healthy and make sure you have best of the visions of this beautiful world.
But how often do you get good eye care guides at a single page?
We are sharing some great eye care tips with you, read them to improve your eyesight and make your eyes attractive.