Prescription Lenses

Prescription lenses are designed to correct vision problems by altering the direction of light rays so they focus correctly on the retina, making your vision clearer.

A prescription for eyeglasses typically includes various values and abbreviations that describe the type and strength of lenses needed. Here are some common terms you might find on a prescription:

Sphere (SPH): Indicates the power of the lens needed to correct nearsightedness or farsightedness.
Cylinder (CYL): Represents the amount of astigmatism in your eye.
Axis: A number between 1 and 180 that indicates where the astigmatism is located on your eye.
Add: Additional lens power needed for reading, often seen on prescriptions for bifocal or progressive lenses.
Prism: Used if you have double vision, indicating the amount of prismatic power needed to correct differences in the alignment of your eyes.
PD (Pupillary Distance): The distance between your pupils, important for ensuring the lenses are properly centered.

These lenses are crafted to meet the specific needs of your vision, whether you need correction for nearsightedness, farsightedness, astigmatism, or other vision issues.