Progressive Lenses

Progressive lenses for presbyopia have certain advantages over traditional bifocals and trifocals, which all belong to multifocal lenses. There are no visible lines on progressive lenses, which attract certain group of people in their 40s who care about their appearance. In addition, progressive lenses provide clear vision and comfortable at all distances, including the intermediate zone that is beyond bifocals.

As its name reflects, a bifocal lens has two focal points: one for a careful reading and the other for distance vision. Bifocal lenses provide very little help to cope with computer work, which requires special intermediate vision. Certain holders of bifocal try to see objects at intermediate range in the head bobbing up and down. This way, long period of use of computers is much more likely to cause the syndrome of computer vision. PC users Bifocals force to maintain a natural posture, which causes muscle tension, neck pain and so on.

Progressive lenses offer a smooth, seamless progression powers many objective, providing a comfortable vision at multiple distances really. presbyopic patients need only look straight ahead to see far away, the eyes move slightly downwards for intermediate vision and to lower their gaze a bit more to manage tasks at hand. They never need Bob's head up and down or maintain awkward postures.

"Moving Image" is a disturbing vision women issue frequently raised by trifocal or bifocal lenses because of their distinct differences sudden power. Moving through to the visible lines of bifocals or trifocal, a carrier is likely to experience a leap image. In addition, trifocal and bifocal lenses only provide clear images in a certain range of distances. Beyond this vision Burry, may occur. Progressive lenses avoid all these problems by providing a comfortable transition requirement. The discomfort of progressive lenses can be buried in some peripheral vision carriers for the first time.

The wide dissemination of progressive lenses in the United States has promoted the advancement of technology goal. Now, with progressive lenses wider materials and intermediate reading is available. And special designs of work, especially for computer work are also provided. modern and progressive lenses to less peripheral aberrations by applying the technology of the wavefront guided. New progressive lenses are also compatible with frames smaller, which was impossible in the past. These models offer more options to small lens fashion.

Materials such as high index plastic lenses and polycarbonate impact resistant have been used to produce progressive lenses now. anti-reflective coatings on lenses to reduce distracting reflections progressive lens and provide more attractive appearance. Progressive lenses are also available in the types of photochromic and polarized.

With such a range of options, you can ask a professional optician for advice.

Article Source: http://vision.firmoo.com/ageing-vision/advantages-types-progressive-lenses.html