Replacement of the lens of the eye

Various eye diseases require lens replacement sometimes. The most common of these diseases is cataract. Why is it necessary to replace the clouded lens?

Age-related changes entail a worsening of blood circulation in the body, so eye pressure decreases and leads to a clouding of the biconvex part of the eye. The nutrition of the organs is weakened, which contributes to the development of the disease. Replacement of the lens in such cases is simply necessary, because inattention to the disease can lead to complete blindness.

First, the patient must undergo a specialist examination. An ophthalmologist makes an accurate diagnosis and determines the degree of turbidity. The intraocular lens is also chosen by the doctor. It is very important to choose the appropriate lens, because it must replace the lens, being thus a foreign body. Therefore, the dimensions must match exactly, otherwise there may be rejection.

In addition, patients undergo mandatory consultation with the therapist. The therapist should exclude all possible complications from the cardiovascular system as a response to anesthesia, even if only local.

The operation for replacing the lens is carried out in the office of the polyclinic. The patient is in a lying position during the operation. The doctor monitors the progress of the work through the microscope, which is installed over the patient. The image in the microscope is scaled to a liquid crystal screen hanging on the wall. Replacement of the lens takes no more than fifteen minutes.

The patient with the help of medical staff lies on the table. The eye is fixed in the open position. Anesthesia has already affected, so the patient does not experience discomfort.

In order to make a microradio, the doctor uses a diamond tool about one and a half millimeters in length. Then a special substance is introduced, which will protect the eye during the operation. This is viscoelastic. In the next step, a probe is inserted into the eye, which facilitates the transformation of the affected lens into an emulsion and its subsequent removal from the eye. Before the doctor is a difficult task: to save the film, which was previously a "real" lens. Due to the preservation of the film, a high level of survival of the new organ of the human eye is achieved.

Further, the replacement of the lens is carried out by implantation of a folded intraocular lens, which is independently unfolded and fixed inside the eye. The section is not sewn. Eye pressure promotes independent "closing" of the incision.

Rehabilitation period is not required after the operation. You can immediately go to work and lead a familiar lifestyle. Restriction applies only to lifting heavy objects. Within one or two weeks you can not raise more than two kilograms.

Firms-manufacturers try to make the artificial lens as real as possible. Therefore, it is impossible to determine which lens is the best. The yellow filter in the lens corresponds to the human. It is also a "shield" from ultraviolet and blue radiation, contributes to reducing the risk of developing age-related retinal diseases. Replacing the lens of the eye with an aspherical lens gives greater clarity to the image in the dark. Aspheric - have a special form of coating. The use of multifocal lenses provides excellent vision both in the vicinity and in the distance. Replacing the lens with an accommodating lens allows the use of the eye muscles, imitating the natural focusing ability. Such optical devices are as close as possible to the natural lens. If the cataract is complicated by astigmatism, the lens is replaced by toric lenses.