Eye Disease Due to Abnormalities Reflection

Frequently encountered in the community who said that he was wearing a minus glasses, there is a a minus 1, 2, even up to 7. Some are saying if you wear glasses and eyeglasses plus cylinder. actually used by the person's eyes what conditions? to have to wear glasses.

Here is a eye disease caused by abnormalities reflection so that someone who has it must wear glasses that normal eyesight:

1. Myopia is often called the Eye Minus or Farsightedness
Myopia sufferer will experience blurred vision when viewing distance while melee can see clearly. the closer the distance can be seen the greater its a minus. cause focal received by the eye shadows are in front of the retina because the lens is too convex. prevention of this condition can use concave glasses (a minus glasses) so shadow object will fall to the retina teapt

2. Plus or hypermetropia or eye Nearslghtcdness
Patients Rabun close, can not clearly see objects at close range while on long distance jelas.kelainan eye can see with this is the opposite of myopia. cause of this disorder is too concave eyepiece so that the shadow object is behind the retina. prevention of this disease is to wear glasses plus.

3. Astigmatism or Eye Cylinder

Eye disease is due to the focus object is seen split into two shadows. why is that? because the flat curved cornea and the cornea is not curved symmetrical upright. The simplest example of the arch spoon. the scoop arch at the base and on the edge is not the same, so when the body perceives the object will look like two. Patients can use the glasses Cylinders.

4. The combination of myopia and hypermetropia

The condition of the patient can not clearly see objects at close range and long range. he could only see objects clearly at a distance only. The disease usually affects people who are elderly. because the condition of the eye has begun to decline. Prevention of this disease can use a combination of glasses Concave and convex lenses. Concave lens is above to see the distance and convex lens is below for a closer view (read)