Varifocal glasses are also known as the progressive glasses, graduated glasses and no-lines bifocals. These glasses are generally used to correct myopia or hyperopia and have become one of the most used glasses for prescription as well as designer glasses. It is called by the name ‘varifocal’ because there are different powers at different levels of the lens. At the top of the lens, the power is minimum, which gradually increases in the middle level and finally, the bottom part of the lens has the maximum power.

Before varifocal glasses, users had to use bifocal spectacles if they had both myopia and hyperopia. These glasses were thick because two different lenses were used, which resulted in a heavy frame. Wearing these glasses for a long stretch was an uncomfortable eyewear experience. Plus the thickness of the lenses used to make these pairs an unattractive option.

The advent of varifocal glasses ensured that the lenses, though a little thicker than the single vision ones, are lighter and this made for a much better eyewear experience. The varifocal glasses comprise lenses which have a gradual increase of power from the top towards the bottom. Generally the middle part of the lenses is used to see objects at an intermediate distance. With the growing use of computers, this advantage of varifocal glasses has made them absolutely peerless.

While selecting the varifocal glasses, one must also remember that not all frames complement a particular face structure. There are six different face types – round, oval, oblong, triangular, square and diamond – which require different frame type. One must always first find out the frame style most suitable to his / her face type before purchasing prescription glasses. This will help in saving both your time and money.

In case of varifocal glasses, you have the luxury to choose from a variety of lens thicknesses. As expected, for stronger prescriptions the lenses in standard varifocal glasses tend to be relatively thick. For an occasional wear, this doesn't lead to any particular discomfort, but if the glasses are your main pair, it will be better to choose thinner frame.

The best way to choose stylish and attractive cheap varifocal glasses is to search for them at online stores. Not only do they offer a wide range but these glasses are also priced at really low rates. To purchase varifocal glasses online, one will need a prescription to assist the makers of the lenses. Generally, most of these online stores have developed innovative systems which make this process easy and flawless.