Basics of Contact Lenses

To choose the correct contact lenses, in the first place, it is necessary to find out the purpose for which they are worn. Secondly, the lenses must be of correct diameter and curvature to fit the eye exactly and finally if the eyes tend to be dry, appropriate lenses should be chosen. There are many types of contact lenses like hard contact lenses, soft contact lenses, and rigid gas permeable and disposables and it is essential to find out the kind that suits a person.

"Plungers" are devices for removing contact lenses. They are used to touch and directly remove a lens from the eye. To find the perfect lenses for a person, only a trial and error method can be adopted because different people react differently to lens material and solutions. Also, the power, curvature and diameter of the lenses can be finalized only after wearing the lenses, especially for bifocal or Toric contact lenses.

Before buying contact lenses, it should be verified whether the prescription is the current one with a one-year renewal. A contact lens prescription should contain the patient’s name, examination date, power, diameter of the prescribed contact lenses, issue date and expiry date of prescription. Contact lenses are closer to natural sight than glasses, move with the eye and correct the refractive error to give a more natural field of vision. They can be worn all day and need not be worn on and taken off. Contact lenses stick to the layers of tear fluid and stay in place, the eye lid pressure holds them in place, any impurities sticking to the lens are flushed away by the lubrication in the cornea when the eye blinks.

Contact lenses require some basical care like washing the hands thoroughly with mild soap, rinsing and drying them before handling the lenses so that the hands are free of pollutants.

Pages: 1 [2] 3

Oгypeц comment`s:

На каком-то сайте я уже читал почти такую же подборку данных, но все равно спасибо

16.02.2010

Add comment:

Name:
Sait link:	http://
Your message:
Enter today\\\\'s date, 2 digits (spam protection):

News World of Warcraft’Fury Warrior (Ezine Ready) You have permission to publish this article electronically or in print, free of charge, as long as you leave the article title, author name, body and resource box in tact (means NO changes) with the links made active and you agree to our posted . Use the tools below to copy the article in plain text form, or you can copy it as HTML, ready to copy and paste directly into a web page. HTML Version: World of Warcraft’Fury Warrior World of Warcraft’Fury Warrior Author: gameboz Cheap-wow-gold.

Popular How to Detoxify Your Body with Minerals & Nutritional Support By: Colon cleansing detox is the systematic ways of removing pathogenic organisms or harmful bacteria from the colon as well as all other digestive organs of the body. Colon cleansing detox can be perform is so many ways and the commonest one is through the Enema therapy which involves the passage of fluids, especially water through the anus into the colon to wash of toxic particles or waste materials which have accumulated in it. By: Medical Science recommends colon detox as a means for cleansing the system against waste elimination, which is rather difficult in nature.