See Clearly With Varifocal Glasses

Even known as Varifocal lenses, or progressive glasses

, Varifocals has the features of a pair of bi-focal lenses without the problems associated with the line along the middle. Bifocals are utilized by people who have problem seeing long-distance, however are finding it difficult to read print or newspaper. People generally face this combination of difficulties as they age, since the lens becomes looser, thus while they may have experienced severe myopia as a teenager, they now want to seem a lot closely at the book or computer screen. Varifocal glasses provide the wearer the opportunity to do both at once and even prevent the thickness of bifocals.

Bifocals got their bad fame in 70s and 80s, because they were seen as unattractive and awkward . Lens grinders had to combine two different types of lens, one enlarging the space, and the other enlarging the near space. This suggests that they often resorted to using thick glass, together with a heavy frame to support the two lenses. They may also cause issues with sight because of the line which joined one lens to the other not being completely ground away. Wearing these glasses for a long time could become wearing, and several people selected to leave them off because of the effort required to wear them. Because bifocals have been so unpopular with several wearers, they are being less often prescribed by opticians, who can often request two pairs of glasses for the shortsightedness and hyper myopia.

Varifocal glasses are an alternative to the bifocal which makes use of a much thinner lens to attain the same results. Instead of being two different lenses, the glass is gradually ground to the desired consistencies, with the top part of the lens being for long viewing, with the lower half being used for close reading. Combining the lenses like this implies that the lens maker will employ a much thinner piece of glass, and then employ a lighter frame to support the glasses. In addition , there is no fine line down the middle.

Those who work in computers, particularly in IT and computer displays, often realize that bifocal lenses are completely unsuitable for their requirements. Instead, they select Varifocal glasses that can be worn for long stretches at a time, and don't require the user to change the frames, move the glasses, or do anything which needs effort or risks eye strain. Without the line down the middle , they could clearly see the screen in front of them, a vital part of their job.

by: Christian Halstead

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