For the Smart Money Cookie

If you want to buy cheap specs on line then make sure you understand one or two essentials before you start. It is true that you are now uniquely able to dramatically reduce how much you have to spend if you know how to purchase your glasses wisely and it they will be perfectly risk-free for you to utilise so long as you become cognizant of a few simple rules

Make sure that they fit you properly

If your current spectacles fit fine, then all you need to do is to measure them accurately and you will need to have perfect fitting new eyeglasses online.

You need to know 4 measurements:

the total width - “A” lens height - b lens breadth - “C” nose/bridge width - “D”

Make sure that you measure the total width (A) properly. To ensure that your new internet spectacles are a good fit for your face, you only really need your total width. Don’t worry too much if you haven’t got your lens dimensions.

Ensure that you have the proper lens prescription

There are but 4 parameters of your eye prescription that you will need to note:

1. Sphere - This is the measure of severity of you near or far sightedness. It is a measure of your lens optical power and is measured in diopters. It invariably has a positive (+) or a minus (-) sign in front or above it.
2. Axis - you will only get this if there is actually a value for the cylinder. It really is to do with the point that indicates the dirction in which the power of your cylindrical lens. The value will be a number between 1 and 180.
3. Cylinder - This is the measure for astigmatism. Once Again, there is always a plus (+) or minus (-) sign present. There may not be a value of cylinder in your prescription.
4. Pupillary Distance (PD) - This measurement is used to accurately center the lenses in the frame that you have selected. PD is the distance from the center of the pupil (black circle) in one eye to the center of the pupil in the other eye.