Prism lenses are special lenses that are prescribed by eye doctors and infused into regular lens prescriptions. They do not contain any focusing power, and therefore cannot correct any refractive errors.

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While prism lenses will help to relieve double vision while you are wearing your glasses, they cannot help your double vision when you remove your glasses. Therefore, prisms may only be a temporary solution.

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If you are searching for a long term solution for your double vision or binocular vision difficulties, speak with your doctor about vision therapy.

Georges-Louis Leclerc de Buffon (1748) originated the idea of dividing a lens surface into concentric rings in order to reduce the weight significantly. In 1821 this idea was adopted by Augustin-Jean Fresnel in the construction of lighthouse lenses.

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Vision therapy retrains your eye-brain connections to improve your visual skills for clearer, single vision, with or without your eyeglasses.

What Are Fresnel lenses used for

A wide variety of thin Fresnel lenses are molded in plastic, the width of the rings being only a few thousandths of an inch, for use as field lenses with ground-glass screens in cameras and small projectors to increase the brightness of the outer parts of the screen.

One of the most common uses for an eye doctor prescribing prisms is to treat a condition known as Binocular Visual Dysfunction (BVD).

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Schedule an appointment with an eye doctor near you to find out if prism lenses could be the solution you have looking for.

Prism lenses are prescribed for patients who suffer from severe binocular vision difficulties and double vision, most commonly resulting from:

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Prisms “trick” the eye into believing that an object is in a different location in order to improve eye alignment. This helps the eyes to perceive images in a way that single vision can be achieved— improving binocular vision, and reducing double vision, headaches, reading difficulties, and more.

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Fresnel lens, succession of concentric rings, each consisting of an element of a simple lens, assembled in proper relationship on a flat surface to provide a short focal length. The Fresnel lens is used particularly in lighthouses and searchlights to concentrate the light into a relatively narrow beam. It would be almost impossible to make a large lighthouse lens of the usual solid glass-disk type because the thickness and weight would be prohibitive; the lighter Fresnel lens is constructed of elements that are separately ground and polished from suitable glass blanks and assembled to make up the complete lens.

A one-piece molded-glass Fresnel lens is convenient for spotlights, floodlights, railroad and traffic signals, and decorative lights in buildings. Cylindrical Fresnel lenses are used in shipboard lanterns to increase visibility.

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If you suffer from double vision or binocular vision difficulties, prism lenses can be prescribed to improve your clarity of vision— enabling a more comfortable way of seeing.

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Contact an eye doctor near if you or a family member suffer from any of these signs above, prism lenses may be the solution to eliminate these signs.

Prisms, by definition, are triangular in shape, and made of plastic or glass for the purpose of dispersing light into a spectrum, or changing the direction in which light is reflected.