Thursday, November 16, 2017
Cataracts (Blur vision), Psychological Issues & Joint pains Cured in 15 ...
The human eye is an exquisitely complicated organ. It acts like a camera to collect and focus light and convert it into an electrical signal that the brain translates into images. But instead of photographic film, it has a highly specialized retina that detects light and processes the signals using dozens of different kinds of neurons.
Some Common Eye Diseases:
MYOPIA (Near sightedness): Nearsightedness develops in eyes that focus images in front of the retina instead of on the retina, which results in blurred vision. This occurs when the eyeball becomes too long and prevents incoming light from focusing directly on the retina. It may also be caused by an abnormal shape of the cornea or lens.
HYPEROPIA (Farsightedness): It is a refractive error, which means the eye does not bend or refract light properly to a single focus to see images clearly. In hyperopia, distant objects look somewhat clear, but close objects appear more blurred.
ASTIGMATISM: Astigmatism is a common type of refractive error. It is a condition in which the eye does not focus light evenly onto the retina, the light-sensitive tissue at the back of the eye.
CONJUNCTIVITIS (Pink eye): Pink eye (conjunctivitis) is an inflammation or infection of the transparent membrane (conjunctiva) that lines your eyelid and covers the white part of your eyeball. When small blood vessels in the conjunctiva become inflamed, they're more visible. This is what causes the whites of your eyes to appear reddish or pink. Pink eye is commonly caused by a bacterial or viral infection, an allergic reaction, or — in babies — an incompletely opened tear duct. Though pink eye can be irritating, it rarely affects your vision. Treatments can help ease the discomfort of pink eye. Because pink eye can be contagious, early diagnosis and treatment can help limit its spread.
EYE REDNESS: Eye redness occurs when the vessels in your eye become swollen or irritated. Redness of the eye, also called bloodshot eyes, or pink eye can indicate the presence of several different health problems. While some of these problems are benign, others are serious and require emergency medical attention. The redness of your eye may be a cause for concern. However, most serious eye problems happen when you have redness along with pain or changes in your vision.
CATRACT: Cataract is a clouding of the eye's lens. When we look at something, light rays travel into our eye through the pupil and are focused through the lens onto the retina, a layer of light-sensitive cells at the back of the eye. The lens must be clear in order to focus light properly onto the retina. If the lens has become cloudy, this is called a cataract.
CORNEAL ABRASION: A corneal abrasion is a painful scrape or scratch on the surface of the clear part of the eye. This clear tissue of the eye is known as the cornea. This transparent window covers the iris, the circular coloured portion of the eye.
OCCULSION RETINAL VASCULAR: When the flow of blood from the retina is blocked, it is often because of a retinal vein occlusion. If this happens, the nerve cells of the retina can die and vision may be lost. Because all of the blood from the retina drains through one large vein, a blockage of that vein can affect all the vision in that eye.
BULGING EYES: Hyperthyroidism (particularly Graves disease) is the most common cause of bulging eyes. With this condition, the eyes do not blink often and seem to have a staring quality.
Normally, there should be no visible white between the top of the iris (the coloured part of the eye) and the upper eyelid. Seeing white in this area usually is a sign that the eye is bulging.
Because eye changes develop slowly, family members may not notice it until the condition is relatively advanced. Photos often draw attention to the bulging when it may have gone unnoticed before.
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