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Contact lenses are nowadays preferred most, as technology has turned the unfriendly lenses of the past in easy everyday objects. As long of course, we have chosen for our eyes the right kind of lenses.
They allow you to deal unobtrusively with any activity or sport you like, growing your vision more than glasses and release you from the torment of how your eyes look when you wear your glasses (e.g. very small if you are myopic, very large if you have hyperopia or presbyopia).
Contact lenses now provide a solution to every refractive eye problem such as myopia, hyperopia, astigmatism and presbyopia.
Read, therefore, on the kinds of contact lenses, when they are appropriate or should avoid using them, and how to care for them.
When you can wear contact lenses
You can use contact lenses if you have moderate or high myopia (over 3 and 5 degrees respectively). In this case, the lenses will facilitate through several activities (e.g. sports, dance), that you may avoid because of your glasses.
Also regarding myopia, contact lenses outweigh the glasses, because they have no magnification difference.
What does this mean?
In fact, more than 4-5 degrees difference is very noticeable and can cause eye fatigue, headaches and dizziness. On the other hand, contact lenses are contacted with the cornea, so there is no growth difference and their use is not accompanied by such symptoms.
2. In case you have moderate or high hyperopia (greater than 2 and 4.5 degrees respectively) the use of contact lenses helps aesthetically because when hyperopia exceeds 2 degrees, the eyes appear quite larger than normal size within the glasses.
3. If you have moderate or high astigmatism (over 1.5 and 2.5 points respectively).
4. If you have presbyopia. The first contact lenses for presbyopia, were released 20 years ago and belonged to the category of semi-permeable. However, since 1994 those with presbyopia have in their availability soft lenses of frequent replacement, which are considered easier to use.
5. If you have an eye disease such as keratoconus, where the outer tunic of the eye (the cornea) protrudes acquiring a conical form. In this case, with the aid of contact lenses (especially semi-soft), the cornea is pressed resulting in correcting irregular astigmatism caused by keratoconus.
Tips for contact lenses
Generally, contact lenses are a means for correction of myopia, hyperopia or astigmatism, and in recent years they have experienced rapid development. It is an excellent remedy which, if implemented properly, guarantees better vision than the one your glasses provide you.
The application of contact lenses can be difficult if:
Soft contact lenses
The most prevalent type of contact lenses is soft contact lenses. With them we can correct myopia, hyperopia and astigmatism. Soft lenses are not all the same.
The main difference these two classes of lenses have is their water content. In the first category are included the lenses that have a water content (hydrophilicity) of 38%, while the second ones have hydrophilicity of 55% to 74%.
In any case, the daily cleaning and discontinuation during night sleep even those of prolonged use, ensures against infections of the ocular surface.
The proper use of soft contact lenses
The proper use of contact lenses includes the correct application and proper cleaning. This way you will avoid any contamination problems or discomfort that may arise from your lenses.
If while wearing your contact lenses you feel extreme discomfort as stinging or a burning sensation, it might be: