11 April 2011

Know Your Contact Lens

Contact lens rests on the cornea at the top of a permanent supply of tears. The pressure exerted by the eyelids any blinking also serve as support to maintain contacts in place. Blink contacts make pressure move a little and slide on the cornea. This movement allows little tears, floating below, gentle flush out trash that accumulates in the eyes.This is how contacts remain on your eyes, offering a clear vision as the Crystal. But the way they fix the problem of vision is a completely different ball game.There are several types of vision problems encountered by people, but the four main are the presbyopia, myopia or hyperopia, farsightedness or nearsightedness and astigmatism. The common problem in all these cases, it is that the retina cannot correctly focus light. And when your retina does not work correctly, the result is a blurred vision.All contacts are made exclusively, depending on the problem of vision, they are required to correct them. For example, if you are an astigmat, the optometrist will measure the cornea to a pair of contacts that will perfectly fit your eyes. Now the light rays will get placed at a particular point on your cornea resulting in a NET vision.Lenses for myopia or hyperopia are very thin in the Middle but thick on the edges. This makes the retina treat rays of light correctly.Lenses for hyperopia are exactly the opposite - thick in the middle and thinner at the edges - resulting in the sharp vision and comfort.The core technology is the same for all sorts of contacts - redirecting light to a point on the retina. The difference lies in their production that they have to treat various eye problems and the shape of the cornea is different in each issue.Provide more options and facilities for users, the four types of disposable soft lenses are available on the market. They are a) disposable daily - to dispose every night before going to bed; ((b) adjusted - may be two weeks before their trashing c) monthly disposable products - extended wear for 30 days continuous stretch; (d) annual disposable traditional - port tenure is for one year.For people who plan to buy contact lenses, here are a few practical suggestions. Buy online contact lenses is a more affordable than their purchase of your optician of neighbourhood. Online suppliers offer prices low they buy contacts in bulk and not have no overhead as showrooms. And what better portal than lenskart.com, which offers you unbeatable prices, payment options practice and quick delivery.