It is almost certain that at some point in time in your life or the other you are going to need to wear prescription eyeglasses. What’s more, about sixty percent of people with learning disabilities also find it necessary to wear eyeglasses. If you have an eyesight problem then you have no option than to wear prescription eyeglasses.
Before you shop for your glasses you should ask your optician to tell you in simple English why you have been prescribed to wear eyeglasses. Glasses help to correct nearsightedness, farsightedness, and astigmatism. If you have passed your fortieth birthday chances are that you will need to wear corrective vision glasses.
It is important that you take timely steps to correct your vision and for that, you have to understand more about what your eyeglass prescription means. What’s more, you also need to understand the importance of buying glasses that are comfortable to wear and they should also correct your vision properly. It is good to know that there are lots of options available to those who need to wear glasses to correct their vision.
It is also a good idea to understand what your eyeglass prescription means. The parameters that your optician specifies will vary according to the nature of your problem. However, in most cases, your prescription includes the power to which each of your two lenses must be made in order to correct your vision.
To understand the meaning of your eyeglasses prescription you should know the following terms. DV is the shortened form for distance vision. NV is the shortened form for near vision. OD means Oculus Dexter (right eye) while OS means oculus sinister (left eye). OU, on the other hand, means oculi uterque or both eyes.
If you have a refractive error in your eye then you will need spherical correction. A cylindrical correction helps to correct astigmatic refractive error. Pupillary Distance (PD) is the distance between the centers of both your pupils. The sphere is a term that shows that you have a farsightedness problem. In other words, it indicates that you are not able to see things that are very close to your eyes.
Cylinder refers to the extent of your astigmatism problem. Axis is a term that helps to show the direction of your astigmatism problem. This number helps the lab technician find out what angle your lenses should be positioned in the frame.
Understanding these terms will help you pick a suitable pair of prescription eyeglasses.