Unfortunately, to date, vision problems occur in many people. Reasons and conditions for the deterioration is the mass, and the result, as a rule, one need vision correction by means of lenses.
More and more people prefer wearing contact lenses, professional selection which can only ophthalmologist. The selection of lenses is influenced by many parameters:
- condition of the eye;
- General state of health;
- the amount necessary adjustments.
- the patient's wishes regarding care for the lenses;
- the profession of a patient;
- the material side of the question.
Today in ophthalmology apply many types of lenses. From each other, they differ in the material that was used for manufacturing, and construction. For each type of lens has its own time and mode of wearing. More information can be obtained from the doctor. Remember, a visit to the ophthalmologist for people who in everyday life wearing contact lenses every six months is mandatory. This will reduce the likelihood of complications, or if you still have, as quickly as possible to help the patient.
Traditional contact lenses
First of all types of soft contact lenses appeared to traditional lenses, which require long term operation. To determine from among the many other options is quite simple: the packaging for them is always a glass bottle. As a rule, conventional lenses are quite thick lenses, which are made of polymacon with minimal moisture content. A pair of such lenses worn for up to a year. Care for lenses of this type includes: daily cleaning (use a special cleaner) and enzymatic cleaning one or two times a week. Traditional contact lenses suggest removing them before going to sleep. The main disadvantage of these lenses is the low permeability. But many people still remain carriers of this type of lenses that can compete with the planned replacement lenses.
Contact lens replacement
Lens replacement implement a set consisting of several pairs. Within one to three months worn one pair, then it changed to a new one. The material used for manufacturing this type of lenses, and contains more moisture and more kislorodopronitsaemaya. But still, this type of lens is also not recommended to leave on the eyes at night. The doctor is able to give on this issue more specific guidance. Users of contact lenses of scheduled replacement often exceed the terms of their operation up to six months. Under good medical control this soft violation is allowed, but only with the implementation of more thorough and regular care for the lenses.
Contact lenses frequent replacement
When choosing this type of lenses to carry out their replacement will have every 2-5 weeks. These lenses the rate of oxygen permeability and the moisture content is much higher than in the previous versions, so they are suitable for continuous wear. To care for these lenses much easier as there is no need to enzyme and daily cleaners. For this type of lenses is enough to apply multifunctional solution. Some users manage to stretch the lifespan of up to two months. Everything depends on the characteristics of the composition of the tears, the practice of removing the lenses at night and on the specific parameters of the lenses. On this issue, you need to consult with your doctor.
The daily replacement
This type of lenses can be called the apotheosis mode frequent replacement. In the evening, the old lens is removed and discarded, and in the morning put a brand new pair. Care such lenses do not require, but you should consider the fact that a fairly high percentage of diverse adverse reactions eye on the frequent changing of the lenses, as they are protective biomolecules on the surface of the eye to be formed do not have time.
Read also: Select contact lenses
Before you choose the right option, you should consult a qualified professional, and only then go to the optics.