Those prescription glasses having such lenses which possess two separate optical powers are known as bifocal glasses. These are most suitable for those individuals who suffer from multiple problems of eyes such as myopia and hyper myopia. These glasses help the individual who is wearing them in multiple ways. This is because the wearer can see both distant and nearby objects clearly with the help of these glasses.

In this way these glasses tend to aid people suffering from both myopia and hyper myopia. However, if you are going to buy bifocal glasses, you need to brace for the fact that it can be a bit difficult to get accustomed to these glasses due to their unusual placement of lenses.

Structure:
Bifocal glasses consist of two separate convex lenses, one of them being located in lower part of the frame. The lens in the lower part is useful for viewing closer objects while the other lens is for viewing distant objects. The focal length of both these glasses is such that these help the eye lens to focus light rays coming from outside to get focused on the retina of the eye and hence help us to see things.

With the help of modern technology, such bifocal glasses have been developed in which the smaller lens is incorporated into the primary lens, thus removing various issues related to the health of the eyes of an individual wearing them. This process has given enough room for maneuverability with the design of the glasses to provide a satisfactory experience to customers.

Advantages: With the help of their unusual designs, they can prove to be useful for the individual who is wearing them.

1 The individual needs not to carry two different glasses for long and short-sightedness as a single pair of glasses can serve the purpose of correcting both problems.
2 The combined price of two different glasses can be much higher than the price of a single pair of bifocal glasses. Thus, if anyone is having multiple problems with eyes, it makes economical sense for him to go for a single pair which might be priced much lower than two different pairs.

When you are going to buy bifocal eyeglasses, you need to take care of a few things in mind. You need to get your eyes checked by an expert optician. This is important as an optician would be able to provide you with the extent of your problem and would tell you the power of lenses that you should buy. Afterward, you can buy bifocal glasses from any local store or from various websites on the Internet.

As explained above, though a single pair of bifocal glasses might price higher than another pair, but would prove to be more economical than two different glasses for treating different problems of the eyes. Moreover, it requires an expert to craft these glasses. So when you are going for these glasses, do take enough care in determining the experience of a store in manufacturing them.