There are two general eye problems for young and old and these are myopia or commonly called as nearsightedness and Presbyopia or farsightedness. Myopia is a refractive error that means that the eye of an individual does not refract or bend light correctly to a single focus in order to see images vividly. In nearsightedness, close objects look vivid, but distant things appear blurred. Nearsightedness or myopia is a condition that really affects about 25% of Americans. Myopia is an eye focusing disorder, not entirely an eye disease.
However, myopia is inherited and is usually found amongst children when they are between ages 8 and twelve years old. During their teenage years, when bodies grow rapidly, nearsightedness may become worse. Between the ages of 20 to 40, there are usually little differences. It can still occur among adults. If the eye disorder is mild, it is called low myopia. Severe eye disorder is known as high myopia. For individuals with high myopia, they can usually correct their vision easily using contact lenses, glasses or sometimes, a reflective surgery. Patients with nearsightedness have a high risk to develop a detached retina. It is necessary to discuss with your ophthalmologist about the signs of having a retinal detachment and if you’re at risk.
If the retina of your eye is detached and is discovered early enough, you can have a surgical procedure in repairing it. It is essential to engage into regular eye examination in order to watch for changes in your retina. Thus, individuals with high nearsightedness are at high risk of developing cataracts and glaucoma.
Causes of Myopia
For the eyes to see, light rays coming from the Sun must be refracted or bent by its tear film, the lens and the cornea so that they focus on the eye retina. Retina is one of the layers in the eyes, which consists of light-responsive cells coating the back of eyes. It receives the image formed by these rays and drives the picture to the brain with the help of the optic nerve, which is a certain part of the brain. Nearsightedness occurs when the eye has a cornea or longer above normal that is too steep. Due to this, light rays focus in front of the eye retina instead on it. It allows a person to see near things clearly, but distant objects appear blurred.
Symptoms and Diagnosis of Myopia
Signs and symptoms of myopia include headache, eyestrain, squinting to see accordingly and hardly seeing objects far away such as the blackboard at school or road signs. Eye disorder myopia can be diagnosed as part of a comprehensive eye examination. It can be determined using a standard vision test with the use of chart consisting letters and numbers posted at the end of the room. If the vision tests show that you’re nearsighted, your doctor uses particular examination devices to know what causes the myopia. A retinoscope is used in showing how light reflects off your eye retina. By the light reflection, it will be determined if you’re near or farsighted. It correcting myopia, there’s no best method. The most necessary thing for you to do depends on your eyes and lifestyle.