Eyeglasses online: The most convenient way to buy glasses

Buying eyeglasses online is an easy mode of getting a customized pair of glasses. There are a few factors that are needed to be considered before buying various types of glasses such as cheap prescription glasses, motorcycle goggles, safety glasses and many other types which can be fitted with the prescription lens.

There are three important factors that are needed before placing an order for a customized pair of glasses. The first is the head size and to ensure that the fitting of the frame is accurate, the total width of the frame should be chosen which is close to your head size. The difference can range up to 5 mm. The next thing to be considered after the head size is the PD (Pupil Distance). The PD is the distance between the center of the two eyes and its measurement is required to ensure that the lenses are positioned correctly within the chosen frame. If your optometrist has not put your PD on your prescription you need not worry as the websites selling eyeglasses help you to find out your correct prescription. This is the third crucial factor which needs to be considered while buying eyeglasses online. If you are buying online, the facility of filling prescription online is available and you can get cheap prescription glasses within the comforts of your home.

The online stores offer cheap prescription glasses and with help of the prescription available, customized pair of glasses can be bought easily from online stores. There are a few things which describe a prescription. The first is the sphere which is the amount of the long or short sightedness. This value indicates the optical power of the lens. It always has a plus or a minus sign in front or above it. It is important to note that the lens power for the distance correction will be minus; on the contrary, the correction for near distance and reading will be plus power. If you do not need a correction, the sphere will be filled as 0.00, Plano or P.

The cylinder is given on the chart on the website and the combination of ‘Cyl’ and ‘Axis’ will give the measurement of the astigmatism. There is also a plus and a minus sign and if there is a value under the abbreviations ‘Cyl’, then probably, there should be a value under the column of Axis also. If the eye specialist does not leave value under the above mentioned columns he will write ‘SPH’ or ‘DS’. Therefore, you should leave the column blank. The axis combines with the cylinder and measurement of astigmatism is done easily. The Axis is a number between 1 and 180 and it may or may not be written with a ’0′ degree symbol after the number. The ‘ADD’ column how much power gets added to the distance Rx. It is noteworthy that if you are buying reading glasses, bifocal or progressive glasses you have to enter a figure in the ADD column. Well, if you do not need a reading glasses or multi-focal glasses, you just need to ignore this number.

Thus, it is very easy to order prescription glasses and eyeglasses online of various types such as the safety glasses, motorcycle goggles and many more types of eyeglasses. People can also buy rimless eyeglass frames, safety glasses and many more.