Tuesday, August 24, 2010

Different Types of Contact Lenses

Disposable contact lenses are mainly classified for its replacement period and wearing schedule. There are three replacement periods for disposable contact lenses named daily disposable, fortnight for bi-weekly contact lenses, and monthly replacement. Each of the three classes for replacement durations are defined into two wearing schedules like contacts that are worn during waking time and detached during sleeping hours and disposable contacts that can be put on continuously on both waking and sleeping time without removing right up until their replacement time period.

Daily disposable contact lenses are the contact lenses that are utilized in just a single day. These contacts are fashioned for protection, health and convenience purposes. Daily disposables are just used during waking hours and disposed before sleeping. The distinct type of contact lenses is not as heavy as other contact lenses. Users find daily disposables as the most comfortable to use amongst contact lenses since they're much thinner. The lenses also let more oxygen to reach through the cornea. The type of lenses is ideally suited for people who are so occupied to decontaminate lenses excessively. People wonder why they have to get daily disposables while in fact there are contact lenses which might be reused each day. Daily disposables are literally cheaper and an excellent fit for the people whose eyes are too delicate with minor build-up substances in the lens such as protein, lipids and other substance deposits. Swimmers also favor these kinds of lenses over the others. With regards to hygiene, daily disposables would be best choice for these are worn and trashed before sleep. There are several one-day disposable contact lenses nowadays namely Acuvue 1 Day Moist, Focus Dailies, and Soflens daily. There are daily disposables produced for corrective purposes such as Focus Dailies Toric contact lenses that treats astigmatism-visual problem that results from irregular curvatures in the eye cornea. When daily disposables are newly produced, these were slightly costly however, they are getting well- known recently, thereby delivering more daily disposables in discounted prices everywhere, even online.

Contact lenses can be put on within sequential two weeks and disposed afterwards. They are also known as fortnightly Contact lenses or bi-weekly contact lenses. There are two sorts of using period for fortnightly contact lenses. The first one is the form that are just worn within waking hours, taken out , cleaned, kept prior to sleeping hours, and used again during waking hours on the following day. Another kind of wearing period for bi-weekly is know as extended wear which means contact lenses that can be worn both the waking and sleeping hours and trashed after two weeks of usage. These are made of Silicone Hydrogel, a substance that makes the lenses soft flexible allowing up to 6 or 7 times oxygen to pass through the cornea. Fortnightly contact lenses are widely known nowadays such as Acuvue 2 12pk , Avaira , Soflens 59 and even more to state. Just like daily disposable contact lenses, fortnightly contact lenses can also be corrective such as Soflens Toric,Acuvue Oasys for Astigmatism. Fortnightly might be utilized for fashion uses like FreshLook ColorBlends 2pk by Civa that is suitable for both bright and dark tones of eyes.

Monthly disposable contact lenses are lenses which are worn in one month period. This replacement time is adjustable to eye tolerance towards substance deposits. Just like fortnightly, it is also made of Silicone Hydrogel contact lenses which maintain the cornea healthy. The same as the earlier two replacement spand contact lenses, there are two terms of putting on schedule for monthly contact lenses. They could be utlized within waking hours only or could be overnight. They are generally employed for thirty days continuous prescription for cornea-related vision troubles such as myopia and presboia. There are lots of monthly disposable contacts available in the market such as Biofinity Toric, Proclear Toric, Soflens 38, Purevision Multifocal 6pk and many more.

Replacement time and wearing schedule are both dependent on every distinctive eyes of an individual. Optimists are people who are authorized to examine the eyes to think of the exact disposable contact lenses which are friendly to your eyes.