Nearsightedness, farsightedness, hyperopia, etc etc. They are all poor eyesight, united by a single element : the sufferer will probably be forced to use tools to correct them. And we can see in an appropriate manner. At this point, however, a problem arises: it is better to use glasses or contact lenses? The advantages of the latter, in many respects, are obvious: firstly, the visual field, much broader. As a result, the ease of use; lenses can be used while doing sport, unlike glasses, often impossible to bring (difficult to play a game of football). Do not forget then that nowadays there are contact lenses multiform, which allow you to see clearly that ‘closely’, without taking away the sharpness of vision ‘from a distance’. In short, a series of arguments that allow you to identify the contact lenses as superior to classic eye wear .

contact- lenses

But there is another problem: the contact lenses on the market today are a myriad of different durations, made ​​of various materials, with features sometimes difficult to understand. Finding your way around this? A first suggestion, perhaps trivial, but inevitable, is to consult an ophthalmologist, who will be able to define the type of lens best for everyone. Then, here are a few tips on the subject.

First, duration: for sale, there are many contact lenses called ‘disposable’, that is used only for a day (we recommend not to go beyond 8 hours). They present a major point in favor; fact, lasting a short time, it minimizes the number of times that are touched / rubbed, and this means less risk of inflammation of the eye.
Instead, the lenses more durable (there are of fortnightly and monthly, usually) have more risk of causing eye infections , and for this reason it is always good to keep them clean, adhered to the doctor. Finally, there are lenses so-called ‘permanent’, lasting up to 4 weeks, so called because they can also be held for the whole night, as opposed to all the other, as made ​​of a special material (more expensive) that allows a great influx of oxygen to the eyes.

Another important aspect is the material: we can identify two types of lenses, rigid ones and soft ones. The former, in turn, are divided into ‘gas permeable’ and ‘non-gas permeable’ depending on whether or not to pass oxygen to the eye (remembering that more oxygen means better hydration ). Those soft, instead, are divided into hydrophilic and not. Are preferred first, as containing greater amounts of water, are more comfortable, and do transpire better the eye (the latest generation) .