With the help of a visual analyzer, we get most of the information about the environment. To spoil, and even more so lose sight - means to destroy a full-fledged connection with everything that the joy has previously brought, aesthetic pleasure or other important emotions. There are many ways and diseases that can deprive a person of a full-fledged life. These factors need to know that when the first symptoms appear to conduct timely treatment and prevention of vision loss.
The mechanism of the visual analyzer
The cornea is the first element with which the rays of light come into contact. It is a convex dust of a lens that begins a cascade of refractiveness of light. It is the front camera of the eye, filled with liquid with refracting light properties. The next lens is a crystal eye. It has double convexity and ability to change the refractiveness of light rays. This happens with the help of small muscles attached along the edge of the crust. The rear camera is also filled with refractory fluid. This endages the refractive and light stage.
The next stage is to transform light information into electric. This is engaged in the retina of the eye, which is littered with photosensitive cells. The yellow spot is the place of the greatest accumulation of these cells. It is in this place that the light focuses. Further, visual cells transmit information about the light in the optic nerve. On it, information begins its way to the occipital share of the brain, where the center of view is located. The left visual center takes information from the left half of the retina of both eyes, and the right - from the right.
Cataract leads to loss of vision
Cataract is a progressive lens disease, at which it is clouded, impede the passage of light. This disease is age and begins to manifest after 40 years. The reason is a violation of the metabolism in the lens tissue. Patients complain about the loss of clarity of the image, spots or fog in front of the eyes. With age, the pathological process progresses.
In the initial stages, the disease can be kept conservatively. To do this, it is necessary to regularly take inside and in the form of eye drops of vitamins: A, E, K, B1, B2, B6 and PP. It is also necessary to balance the power, which should provide the body with the necessary set of micro and macroelements.
There are new technologies that, with a laser, renew the transparency of the lens. But it is impossible to do in the last stages of the disease. In these cases, the question of replacing the lens. Previously, a crystal of a pig was used, but it was long ago refused. Now implanted artificial lens, which have proven very well. During the operation, the laser makes small holes in the cornea, through which the old crystal is removed by parts and implanted new.
Diabetic retinopathy leads to loss of vision
Sugar diabetes leads to the defeat of many organs. One of the classic target organs of diabetes is the retina of the eye. The disruption of microcirculation in the retinal vessels leads to their expansion and damage. The walls of the vessels become more perceptive and unwanted unwanted substances into the retina. In the future, there is a complex pathological process that worsens vision and can lead to blindness. Therefore, you need to adhere to the recommendations of endocrinologists and constantly correlate the level of glucose in the blood.
Hypertensive retinopathy leads to loss of vision
Chronic blood pressure increase also has its target organs. And the retina is included in their number. For a long time, patients do not complaints. But if you start the process, the progressive impairment of vision begins. Objective signs of retinopathy are diagnosed almost every person suffering from human hypertensive. For some reason, few people give this value. Holding blood pressure in permissible boundaries, you can save your vision.
In today's world, our vision is in constant tension. The reason for this - a new invention, and a way of life. Given the still and the possible diseases, we must be very careful with their visual apparatus.
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That's right. Father put cataract two years, six months ago, but was told that this is the initial stage. The doctor recommended to save the view orlit drink, plenty of vegetables, fruits, and fresh air. Dad moved from the city to the country. Vision is not falling, but this is probably only through proper treatment.
The main reason, just after the notorious lack of prevention. All life experience. Therefore drink away courses blueberries forte of Evalar, exercises for the eyes regularly I do eat carrots often. Vision, ugh ugh, excellent. Hopefully this will be to old age)
I also decided to spend on complex Okuvayt Max, it is just vitamins that are useful for vision, plus substances that help protect the eyes from computer radiation. I like the night to play in the computer vision and still have to take care of, I feel that began to deteriorate. I do not really want to go with glasses.