You can t get a prescription for contact lenses until your doctor has performed a fitting and evaluated your eyes response to contact lens wear.
What does bc stand for when ordering contact lenses.
Os stands for ocular sinister the latin term for the left eye.
A lens with a base curve of 8 6 is steeper than a lens with a base curve of 8 9.
Typically a contact prescription contains a brand name lens base curve lens diameter and lens power so you can easily order the right corrective lenses.
This base curve determines what type of fit is required for the lens to meet the curve of your eye.
Why your contact lens prescription is important.
And because we re sticklers for healthy vision we can t process your contact lens order without one.
Base curve bc of contact lens is to general measurement of the back surface of contact lens base curve of disposable soft contact lenses available in the market varies from 8 4 mm to 9 0 mm.
This is important for comfort as the bc of your contact lenses should match your eye s natural curve as closely as possible to ensure a better fit when you are wearing your contact lenses.
Unlike glasses that sit about 12 mm from your eyes contact lenses sit on your eyes making the two prescriptions very important and very different.
Research suggests that it s important to double check that the contacts you receive are the same ones your doctor prescribed before you wear them.
Use this guide to read your contact prescription.
Different individual have different curvature of their eyes.
It s the back curvature of your contact lens which is measured in millimeters.
The bc or base curve measurement indicates the back curvature of your contact lens in millimetres.
Many factors affect the size of a lens including the prescription and the diameter size across the lens so a base curve in one type of lens may be slightly different in another type or brand of contact 1.
There are several codes and figures on your contact lens prescription.
What does each part of your prescription mean.
What is the base curve bc of contact lens.
This stands for base curve.
It also means your contact lenses will be less likely.