Archive for July, 2008

Prescription of corrective lenses:3Over the counter correction

Sunday, July 27th, 2008

From Wikipedia.com In some cases, mild farsightedness (hyperopia) can be treated with simple magnifying lenses or commodity reading glasses that can be purchased without a prescription. The magnifiers make the image of the object being viewed bigger so that it can be seen better.Over the counter readers are spherical corrective lenses ...

Prescription of corrective lenses:2Other considerations

Sunday, July 27th, 2008

From Wikipedia.com Single vision lenses correct for only distance or near vision. Patients with presbyopia or other disorders of accommodation often benefit prescriptions from corrections for both distance and near (see Lens Types below). Infrequently, prism and base curve values may also be specified to correct for binocular vision disorders.    ...

Prescription of corrective lenses:1Components of a sphero-cylindrical correction

Sunday, July 27th, 2008

From Wikipedia.com Corrective lenses are typically prescribed by an optometrist. The prescription consists of all the specifications necessary to make the lens. Prescriptions typically include the power specifications of each lens (for each eye). Strengths are generally prescribed in quarter-diopter steps (0.25 D) because most people cannot generally distinguish between smaller*Sphere ...

Corrective lens:What is?

Sunday, July 27th, 2008

From Wikipedia.com A corrective lens is a lens worn in front of the eye, mainly used to treat myopia, hyperopia, astigmatism, and presbyopia. Glasses or "spectacles" are worn on the face a short distance in front of the eye. Contact lenses are worn directly on the surface of the eye. Intraocular ...

Risks Of Wearing Contact Lenses

Wednesday, July 23rd, 2008

Risks Of Wearing Contact Lenses (article source: www.fda.gov) Wearing contact lenses puts you at risk of several serious conditions including eye infections and corneal ulcers. These conditions can develop very quickly and can be very serious. In rare cases, these conditions can cause blindness.You can not determine the seriousness of a problem ...

Completely Guide:Buying Contact Lenses

Wednesday, July 23rd, 2008

Completely Guide:Buying Contact Lenses (article resorce:www.fda.gov) Contact lens sales are regulated by both the FDA and the Federal Trade Commission (FTC). Before you buy any contact lenses from someone other than your eye care professional, the FDA wants you to be a wise consumer. With a valid contact lens prescription, it is ...

Focusing on Contact Lens Safety:How to Report Problems

Monday, July 21st, 2008

Focusing on Contact Lens Safety:How to Report Problems (article source:www.fda.gov) * If you find a Web site you think is illegally selling contact lenses over the Web, you should report it to FDA * If you don't get the exact lenses you ordered, report the problem directly to the company that supplied ...

Focusing on Contact Lens Safety:Prescription required

Monday, July 21st, 2008

Focusing on Contact Lens Safety:Prescription required (article source:www.fda.gov)  Just like their corrective counterparts, decorative contacts--sometimes called plano, zero-powered or non-corrective lenses--are regulated by FDA. "What troubles us is when they are bought and used without a valid prescription, without the involvement of a qualified eye care professional, or without appropriate follow-up care," says ...