The reason that you can buy cheap prescription glasses online is not because the products are inferior in any way. The companies do not have all the overheads involved with running physical premises. They are therefore able to pass these savings on to their customers. The actual process of making up the products is done in the same manner as used by optometrists.

As is true with any purchase you make, some companies offer better online services than others. For example, some allow you to upload a photograph of your head and you can then try on glasses in a virtual mirror. Research is necessary to find out more about a company, such as how many years of experience it has and what guarantees it offers.

All that is required to buy your eyeglasses is a current prescription and your pupillary distance. The pupillary distance is an important measurement as it gives the distance between your pupils. This helps to ensure that the lenses are in the correct position on your eyes.

Your optician will usually provide your pupillary distance but you may have to make a specific request for this. You can even measure this distance yourself with the help of a friend and instructions on how to do it.

When performing an internet search, sites offer different ways to refine your search. Some of these options are according to price, brand and type of frame. Once you click on a certain product, you will see further options such as being able to enlarge the image or view the frame measurements.

Frame measurements play a large part in choosing a pair with a proper fit. Measurements given are those of the diameter and height of the lens, the width of the bridge and the frame as well as the length of the arms. If you already have a pair which fit you perfectly, you can just select a pair with the same measurements. You will also have to select shape, type, material used and color.

The shape of your face affects which type of frame you select. If you have a square shaped face, oval shapes often look better whereas if you have a rounder shaped face you should stay away from round shapes. Some sites help you with this by providing selections suited to various face shapes.

Other choices you will have to make are what type of lenses you require such as single focus, bifocal or those which blend gradually without visible segments. You will also have to choose which material the lens should be made of. Plastic is the most popular choice as it is lightweight and not as fragile as glass. Various different coatings are also available such as an anti-reflective one which reduces glare.

The values on your prescription need to be entered in the fields provided. This has to be done very carefully as if this is done incorrectly, you will have a problem seeing. There are values for the right and left eye as well as those for astigmatism.

Buying cheap prescription glasses online can be a valuable option for those who want the best quality for their budget. Buying in this way does not mean that you have to compromise on quality. The variety available also means that you will be sure to find a pair that suits your pocket, suits your style and fits you perfectly.