Selection of lenses. Prices, reviews, ratings
General information
Along with glasses, contact lenses are those methods of vision correction that do not require intervention in the patient's body, but have the necessary effect. The disadvantage of this type of correction is that lenses, like glasses, do not directly affect the cause of the patient's vision deterioration. But on the other hand, both of these methods give an effect immediately after the patient uses them, and the absence of intervention in the body guarantees a minimum of risk when using them.
The essence of the effect of lenses and glasses is the refraction of light rays at such an angle as to compensate for certain eye pathologies (myopia, hyperopia) and ensure normal focusing of light on the retina.
The difference between glasses and contact lenses, in fact, comes down to the fact that for lenses, the frame is the patient's eye itself, and due to the need for closer contact with it, the structure of this vision correction tool also changes. Special polymeric substances are used to make lenses, the properties of which include the ability to be saturated with moisture. This quality is a serious advantage, as it prevents the cornea and the lens itself from drying out. Contact lenses also have a number of advantages over glasses:
- lenses are not affected by differences in room temperature and humidity – they do not fog up;
- lenses are invisible to outside observers;
- contact lenses do not reduce the field of peripheral vision;
- lenses transmit images better.
In addition, modern contact lenses not only change the color of the eyes, but also change the shape of the pupil, becoming part of an eccentric and bold image, which has become the reason for their popularity in youth circles. Although it is much more practical to have both glasses and contact lenses, using each item depending on the need and circumstances.
Procedure
Preparation
No special preparation is needed before this procedure no.
Contact lens selection procedure
Contact lenses are selected during the examination of the patient's visual system if the patient has the necessary indications.
There are two types of contact lenses:
- hard (for severe forms of astigmatism and other pathologies);
- soft (the most common).
In order to select a lens model, the ophthalmologist conducts a whole range of examinations, during which he measures all the physical characteristics of the eyeball, determines the level of lacrimation, and the curvature of the cornea.
Then a fitting takes place, since even the most painstaking measurements will not capture all the subtleties of the eye, but will simply narrow the possible range of options.
Rehabilitation period
In There is no need for rehabilitation, since the procedure is safe, painless, and does not pose any complications. However, it is necessary to follow the instructions for lens care that the ophthalmologist will provide the patient.
Indications
The main indications for the use of contact lenses:
- myopia;
- farsightedness;
- astigmatism.
Contraindications
The main contraindications:
- inflammatory processes of the ocular apparatus;
- infectious diseases of the eyes.
Additional contraindications are indicated by the doctor, and they depend on the individual characteristics of the patient's eye health.
Prices and clinics
Contact lenses are selected by an ophthalmologist, and the cost of this common procedure depends on the lenses themselves and the location of the optics.
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