Generally, if we have any eye problems, we will choose to wear eye glasses. However, contact lenses are more widely welcomed by some of us. One reason is that eyeglasses will influence our personal images. The other is wearing contacts can bring endless freedom for us. And till now, contacts are very safe and convenient to wear. We can also select contacts of different styles which have gained wide popularity among us consumers of all walks of life. The materials, the using period, the disposal frequency and the design of lenses are some of the major factors that have played very important role on deciding the attractiveness of those lenses.
Based on their materials, contacts can be fallen into two types, namely, RGP and soft lenses. The former type can let through oxygen and is welcomed by sufferers of astigmatism and presbyopia. And the later type is very common. In early days, contacts can only be worn for one day and can not be slept in at night. And now, there are common contacts and extended wear. The former type should be picked off at night, while the later type can be worn for a consecutive period, several or more days.
Generally, wearers of soften lenses are likely to suffer from some infections and other eye problems. This is because oxygen can not penetrate those lenses on which some proteins and other organics will be left. Therefore, those lenses should be disposed of, though wearers clean them often. Even for disposable, there are many sorts. For example, daily disposable can only be worn for one day and must be discarded at night. Some can be worn for two weeks at day time; some can be worn for a consecutive week; or some other forms can be worn for a month.
Generally, contacts of different designs can be used to cure eye problems of different types. For example, nearsightedness, farsightedness, etc. can be cured by contacts of round design. Presbyopia is very hard to treat, but can be cured by some bifocal or multi-focal. People can use some Orthokeratology lenses to reshape their cornea while sleeping. For Suffers of astigmatism and myopia, or astigmatism and hyperopia, toric contacts are ideal alternatives.
There are also many other nice and more complicated contact lenses. Some of them are colored; some can filter out UV rays. Therefore, wearers of those lenses can benefit by wearing them, such as comfort, convenience, multiple forms and options.
Firmoo.com is the fastest growing online community selling affordable yet high quality prescription eyeglasses, prescription sunglasses and other eyewear. Firmoo’s return and refund policy makes your purchase with Firmoo risk-free.