Prescription Help

Optical Prescription Terms:

 We know buying glasses online is hard 

let us help you.

OD - Right Eye

OS - Left Eye

Sphere (SPH) - Horizontal curve of the eye’s lens, also known as your prescription power.

Cylinder (CYL) - Indicates astigmatism. Tells the vertical curve of your eye.

Axis: The degree and direction of astigmatism. If you have a cylinder number, then you will have an axis number.

 

Lens Types:

 

Single Vision Lenses - Single vision lenses function as all purpose eyeglasses for people that have one prescription to see at all distances.

 

High Index - Designed for people who require strong prescriptions. These eyeglass lenses are lighter and thinner that the standard lenses.

 

Polarized Lenses - They reduce glare and are useful for sports and driving.

 

Glasses Frame Measurements - Usually, the size of all glasses frames will be described in three numbers. ___-___-___. The first number is the eye size. The second number is the bridge of the frame. The third number is the temple size. All in millimeters (mm).