A cataract is a clouding of the normally transparent crystalline lens of the eye. It occurs due to pathological changes of the components of the lens tissue and protein fibers. The disease usually begins in one eye, and then often goes to another. Such a violation of the transparency of the lens causing blurred vision. Cataract is one of the main reasons for the development of blindness, but it can be treated effectively by surgery.
This disease is in most cases caused by aging. It can also occur due to infection by the rubella virus to the fetus in the womb or of serious damage to eyes. Cataract contributes to diabetes, it can be a hereditary disease in the family, to occur after long-term administration of corticosteroids.
The risk of developing cataracts increases if you often put eye exposure to bright sunlight. It is impossible in any case to look at the sun even for a very short time, because the bright light of changes in the retina, which inevitably causes blurred vision.
Cataracts do not cause any work that requires a high voltage of eyes, nor the abuse of sight. It is not transmitted from one person to another, it is not cancer. If opacity does not affect the Central part of the lens, then the person might not even notice. However, if the cataract begins to interfere engage in daily activities, its treatment should not be delayed.
You can select the following symptoms of cataract, the appearance of which, you need to go to the doctor:
- painless blurry vision;
rainbow circles before eyes;
- a split in one eye;
- the need for a strong bright light when reading;
bad twilight vision;
- changes in the visual perception of colors: they seem to be faded or yellowish.
Diagnosed with cataract" is an ophthalmologist after a thorough examination of the eye using a variety of tools to determine the type of cataract, its size and location and at the same time to rule out other problems affecting visual acuity.
Ophthalmologist extends through drops the pupil to examine the inner part of the eye using biomicroscope. which increases the internal structures of the eye. The doctor directs a beam of light in each eye, and looking for possible causes clouding of the lens.