Laser vision correction with hyperopia is the right choice
Mar 06, 2018
With farsightedness( hypermetropia), there is a violation of the accommodation function of the eye, in which the image is not focused on the retina itself, as it should be normal, but behind it. This is due to the shortening of the eyeball and the weakening of the refractive apparatus.
One of the forms of treatment for hyperopia is laser correction. This method of correcting the visual impairment is popular with correction of a weak and moderate degree of hypermetropia.
The special feature of laser vision correction with hyperopia is that when hypermetropia is required to change the curvature of the cornea, make it curved, whereas with myopia it is necessary to flatten the cornea of the eye.
Laser correction is an effective and common method for correcting many types of visual impairment( nearsightedness, astigmatism, farsightedness, etc.). The principle of the laser is to change the shape of the cornea when it is given a natural shape and features that are unique to each patient.
How an excimer laser is used to correct the farsightedness of
Under the influence of excimer laser beams, changes occur only in the corneal layers, with the remaining internal structures of the eye being not affected by the laser beam. After laser correction of vision with farsightedness, the shape of the cornea is changed, which is a "natural lens", after which the rays are focused already on the retina, and not behind it. Thus, normal vision returns.
With the help of laser correction it is possible to eliminate hypermetropia up to four diopters. In this case, the depth of laser exposure is strictly limited( 130 - 180 μm), so that we can confidently state this method as an accurate and safe treatment for hyperopia.
The duration of the procedure usually does not exceed 20 minutes, so the treatment of hyperopia with a laser is considered "one day therapy", which makes this method very convenient and fast. The laser itself acts no more than 1 minute, and local anesthesia in the form of drops is usually painless and easily tolerated by patients.
The correction of vision by using a laser is performed on modern, high-quality medical equipment meeting the required world standards. It is worth noting that laser installations are designed in such a way that they begin to perform their function only if all the norms and environmental conditions are met, i.e.at a certain temperature, humidity, etc.
Sensitive sensors are able to detect any insignificant change in the microclimate, which is expressed in the "failure" of the technique to do its job, as there is a violation of the laser correction technology.
The decision on how to correct vision with farsightedness is taken only by a doctor. Indications for laser correction are determined strictly in an individual character. It is necessary to have a full diagnostic examination, and also take into account the age, the profession of the patient, his general physiological state. Experts try not to prescribe a laser method of correction for patients under the age of 18 and older than 45 years. In pregnancy and breast-feeding, it is undesirable to perform laser correction of vision with farsightedness.
The methods of laser correction method differ in the way the corneal surface is formed and the degree of impact. The essence of the procedures is the same. The following techniques are known:
- SUPER LASIK.
How the laser vision correction takes place in the farsightedness of
The principle of the operation is that the required increase in the curvature of the cornea is achieved by a special method - ablation( "cold" evaporation) with the aid of an excimer laser. In this case, the middle layers of the cornea evaporate on its periphery. Access to these corneal layers is provided by a special device - a microkeratome.
Thus from the top layers of a cornea the site in the form of so-called "cut" is cut out.lids. This "lid" turns away for the time of the laser's work to the side, and after the operation is returned to its former place, where it is fixed without the help of seams, due to its own corneal collagen.
Advantages of the laser method of vision correction for farsightedness:
- Fast recovery of vision.
- Postoperative visual loadings have minimal limitations.
- The anatomical structure of the cornea does not change.
- Resistant refractive effect.
- Painful sensations after surgery quickly go away( in 2-3 hours).
- You can operate both eyes at once.
- Without bandaging.
- Correction can be performed with hyperopia to 4-5 diopters.
Precision, safety and professionalism
When laser vision is corrected, the probability of an error is minimized due to the modern system of safety of medical equipment that performs this procedure.
Laser energy is evenly distributed over the entire surface area of the cornea, while the laser beam operates on the principle of a "flying point", so that not all of the corneal surface area is corrected, but some of its areas that "require repair".
An important factor is the fact that the multi-level protection system ensures the continuity of the laser correction process, therefore the procedure will in any case be carried out completely, without failures and errors, even in the event of a power outage and voltage drops.
Indications for vision correction with excimer laser for hyperopia:
- medical( correction of hypermetropia);
- for safety( driving);
- professional, when due to the specific features of working conditions it is impossible to wear glasses or contact lenses( firefighters, military, etc.)
Contraindications to laser vision correction for hyperopia:
- changes in retina;
- pregnancy and lactation;
- age to 18 years;
- spasm of accommodation;
- progressive refractive changes;
- inflammatory conditions of the eyes and the body as a whole;
- cataract, glaucoma, thinning of the cornea;
- monocularity( the only organ of vision);
- severe systemic diseases of the body.
Most of all patients are concerned about the issue of hyperopia after laser correction. As a rule, the result of the operation does not change with years. If the laser correction procedure was performed at 20 years, then in 25 years his vision will remain good. Another thing is when laser correction can not get rid of the age-related changes that occur in the body after 45 years. Acute vision can be preserved until old age if the age-related changes have not affected the visual system.