April 8th, 2010 | Author: admin
Eye Glass
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Are you a convenient progressive eye glasses?
progressive eye glasses provide correction of presbyopia without the line indicator lenses bifocals. They are also called progressive addition vessels, power progressive glasses, no line bifocal glasses and Varifocal. Unlike bifocals or trifocal to provide two or three powers of the lens, progressive lenses offer a seamless progression of Lens powers many of all viewing distances, so that carriers provide the most natural correction.
For years, progressive eye glasses are supposed to be specially designed for older people whose eyes are distorted due to the degeneration of muscles in the eye with aging or a long history of use glasses. However, the fact is that other groups of people, even teenagers can be in need of progressive eye glasses.
A professional ophthalmologist once they have made a statement indicating that two groups of people are very convenient to use lenses progressive eye: (1). Those who, at age 45 years, suffers from a condition in which the eye has a decreasing ability to focus on objects close with age, (2). Those whose strength of myopia increases the speed of more than one diopter per year. There is no age limit on this group of people, I mean, maybe even teens are included. In addition, research shows that progressive eye glasses are useful for reducing the speed of invrement diopters.
However, not everyone is suitable for progressive eye glasses, for the reason that progressive lenses require careful positioning in relation the center of the pupil users of a reference position distance vision. The professional ophthalmologist lists three groups of people who may have problems using progressive eye glasses: (1). Drivers, accountants and the like that require a broad view of middle distance and near glasses are not suitable for progressive, (2). Those whose strength of astigmatism is more than ± 2 diopters or difference of refraction between the eyes is more than ± 2 diopters are inadequate, (3). Those, being able to see distant objects clearly far away, they want to see objects at short and medium distances are clearly not adequate.
Therefore, before taking a mind that progressive eye glasses, it is best to make sure they are suitable, or certain problems will be caused, including narrow fields of view, clear vision in one Eye on the axis blur and awkward head positions.
Moreover, we should mention the disadvantages of progressive lenses, so that users can decide whether they are willing to endure the inconvenience and will opt for progressive eye glasses. There are several points: the images provided for progressive lenses can be a distortion. Some users would find it uncomfortable, you often feel difficult to acclimate himself to progressive lenses, progressive lenses are sold at a price significantly higher than the reading glasses bifocals and single vision, but often difficult to find all types of curvature of the lens in a lens.
About the Author
Firmoo.com is the emerging online optical store selling high quality eyewear, such as prescription eyeglasses (single vision myopic glasses, reading glasses, bifocal and progressive eyeglasses etc.,), prescription sunglasses (with RX tinted lenses), prescription sports goggles. Firmoo guarantees lowest possible price in the market. Firmoo's return and refund policy makes any purchase risk-free ones.
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