How to correct nearsightedness
Myopia or nearsightedness - it is an eye disease in which the patient sees the bad and clearly distinguish objects at a distance. There are 3 degrees of myopia: mild to 3.0 diopry (D); average - from 3.0 to 6.0; high - more than 6 diopters. Myopic people are needed for continuous wear glasses for distance, and in cases where the myopia greater than 6 D or more, even for a short distance. Myopia can be congenital or acquired, and eventually - to progress.
Instruction how to correct myopia
For the treatment of myopia used in ophthalmology for more than 20 methods. The main methods are: laser vision correction; lensektomiya; Radical keratotomy; plastic cornea (keratoplasty); implantation of phakic lenses and a variety of others.
Laser vision correction is the most effective method of treatment of myopia, hyperopia and astigmatism. Vision correction is performed by changing the cornea, it is attached to form "the natural lens." This method eliminates the myopia up to - 15.0 diopters, is carried out in an outpatient setting, "1 day" mode. Known methods of laser correction: LASIK, Epi-LASIK and super-LASIK, PRK.
Refractive lens replacement is used in the treatment of myopia with higher degrees of - 15 to - 20 D. The method is based on the removal of the transparent lens and a room inside the intraocular lens of the eye (artificial lens) with the required optical power. For ophthalmic surgery using the system, the duration of the operation for 15-20 minutes, microoperation performed on an outpatient basis, does not require a hospital stay and suturing.
When neutrachennoy natural accommodation of the patient implanted phakic lens. During treatment preserved the natural lens, but the implantation of special lenses in the front or the rear chamber of the eye. The method is used for the correction of myopia up to - 25 D.
In carrying out radical keratomas applied on the periphery of the cornea, radial non-through cuts in the future when accretion changing shape of the cornea and its optical power and thereby improving vision. In recent years, due to a long recovery period, poor prognosis, the danger of complications in modern ophthalmic clinics radical keratomas not apply.
Plastic cornea (keratoplasty) provides for the correction of myopia by changing the shape of the cornea as a result of transplant graft. As a transplant using a donor cornea. It is transplanted into the corneal thickness or located on its front layer.
The method determines the correction of myopia highly qualified specialist; much depends on the body condition of the patient before surgery; from the structural features of the eye; sometimes used a combination of several technologies.