Operational procedures
Attempts to improve vision through surgical intervention were still in the middle of the twentieth century. But now these methods are more safe and painless. The basic scheme of the operation is that you are put on a couch, instill pain-killer drops in your eyes and put the expander on your eyelids so that they are open during the whole operation. Sensations during correction are the same as for laser vision testing. You will only hear the noise of the laser work and see the bright light. You will need to focus on the green point and maintain complete immobility during the entire operation. After surgery, the doctor will tell you all the recommendations that you need to follow. There are 3 basic types of eye operations:
The PRK or PRK method , which literally means photorefractive keratectomy. This method is based on the fact that the doctor with a laser works on the surface layer of the cornea. This method does not affect the depth of the eye. After the operation, a lens is put on the eye, which protects it. Within 4 days, the layer of cells lining the surface of the eye, the so-called epithelium is restored and the lens is removed. During this period, the patient can feel the presence of a "speck of the eye", he may have a lacrimation and a fear of light. This operation is good because there is no surgical intervention, and the operation time is short.
The LASIC technique includes both surgical intervention and laser. Using a special device called microkeratome, the doctor cuts the upper layer of the cornea and folds the resulting flap. Then he creates a new shape of the cornea with a laser in the form of a natural lens by evaporation of part of the cornea. After that, the light passing through the cornea will be refracted in another way, and the picture will be clear. After the operation, no stitches are needed, since the incised cornea, put in place, will quickly grow.
The technique of SUPER LASIK is that before the operation a topographic map of the eye is created, and on its basis is a personal scheme of the operation. Then the operation goes through all the steps of the usual LASIC adjustment. Of course, this operation is much more expensive than the others, since all the smallest features of the eye are taken into account here.
Contraindications for laser correction
Undoubtedly, this operation is dangerous, and before solving it, a complete qualitative diagnostic examination is necessary. It is important to know that laser correction has a number of contraindications:
- age to 18 years;
- autoimmune diseases - immunodeficiency states;
- diseases that affect the healing process;
- the thickness of the cornea should be on average 450 (440) μm or more;
- glaucoma, i.e. increased intraocular pressure;
- keratoconus, in which the cornea is too thin and conical in shape;
- operated retinal detachment;
- diabetes;
- pregnancy;
- chronic eye diseases;
- mental disorders and others.
Deciding on such a step is not easy, and it is necessary to understand that, in the main, visual impairment takes place at the genetic level, that is, transmitted from the parents. To correct vision in this case will never be possible. No doctor can give a 100% guarantee that vision will not deteriorate after 15 years. World practice shows that deterioration after operations occurs in 4-12%. Among the reasons may be under-correction, problems with healing, an attempt to eliminate at a time a high deviation from the norm.
If you still decided on this step, then contact only specialized institutions with qualified doctors, with the latest equipment. Before the operation, you will spend a lot of time on the diagnosis. First you need to see a doctor - optometristu. He is a person who specializes in equipment, eye diagnostics and gives a subsequent treatment regimen. He then directs you to the ophthalmologist. When choosing a clinic, be more careful when studying the terms of the contract. If complications arise after surgery, a quality clinic will eliminate them for free, will examine you for as long as necessary. It is worth thinking about hidden payments, going to the clinic, where the operation is much cheaper than the rest. If you have too much deviation from the norm, the operation is done in several stages. At one time with minus 5 will not get a unit.
Side effects of laser vision correction
So, laser correction of vision is a responsible step. In the American clinics they issued booklets that spoke of complete safety and the absence of side effects after such operations. But over time, former patients began to come to them with complaints that they have a double in their eyes, circles and asterisks appear before their eyes. Over time, clinics that do not write full information about the possible consequences will be subject to criminal penalties. Now this is just a precautionary character.
All the consequences have not been studied yet, and this causes concern. One of the side effects may be conjunctivitis, retinal detachment, hemorrhage, epithelial dysfunction. The success of the operation depends on the experience of the doctor, his qualifications, on the correct diagnosis and, in the end, on the characteristics of the organism. Every person is different, how your body reacts to laser intervention - it's unclear.
So millions of people live with glasses and lenses. They do not interfere with them at all. Correction, of course, will give comfort, but who said that it will not give you even more problems?