Myopia, or short-sightedness, is an eye disease that results when the image of an object is focused not on the retina but before it. This leads to the blurring of an object situated at a distance. When we look at the objects positioned nearby, such a problem does not occur: a short-sighted person can see close-located objects quite well, but not ones that are far away. That’s where the name of the disease comes from.
Myopia progresses due to the changes of size and shape of an eye-ball, from the normal spherical form it becomes more extended and oval. This is usually a hereditary disease, so will be passed from parents to children, and will begin to show in childhood. The number of patients suffering from myopia grows is growing rapidly each year, and pupils and students are at higher risk because of constant exercising of their vision. The disease can worsen with age, but can also plateau, sometimes at a low level, and stay there for the rest of the person’s life.
There are several major reasons that cause myopia:
– The disease is inherited
– Intensive visual stress
– Mistreatment of the eyes
– Malfunction of blood circulation
– Shortage of vitamins and nutrients
The basic symptom of near-sightedness is a difficulty in seeing objects at a distance: they seem blurred and indistinct. A person needs to narrow his eyes in order to see them well. Other symptoms include hyper fatigability and frequent headaches from the stress of using the eyes so much.
To be diagnosed a person must consult an ophthalmologist. The full check-up includes measurement of visual acuity, with or without correction, and other special examinations like refraction test, retinal examination, slit-lamp exam and a test of the muscles that move the eye.
There are different stages of short sightedness, according to which a specialist can choose the right lenses for correction. However, the disease can progress at an alarming rate, sometime even more than one dioptre per year. In this situation it may cause different and more complicated problems, and intervention such as refractive surgery is needed in most of the cases.
However, it was also found that myopia sufferers could help to manage their condition with the use of sunglasses. The UV blocking properties of high quality models such as Ray Ban sunglasses, combined with the dimming of light, helped to allay the degeneration. This is, however, only seen as a temporary fix, and either surgery or lens correction is the only real way to fix the disease.
So, now you know what to look out for in your own and other people’s vision and symptoms. Myopia, as with all diseases, is best treated when caught early, so be aware and look out for the signs!