You ll also need this information if you want to order contact lenses online.
Bc mean contact lenses.
Base curve usually a number between 8 and 10 if your brand only comes in one base curve your prescription will not contain a bc value.
Both the base curve bc and diameter dia of a contact lens ensures a proper fit on your cornea and total eye surface.
Here s what those abbreviations mean.
An example of a common base curve would be bc 8 7mm.
This measurement is usually written in millimeters or sometimes with the words flat median or steep.
Often contact lens manufacturers will only offer one or two sizes numbers like 8 3 8 6 or 8 9 and your optometrist will choose the size that would fit you best.
Use this guide to read your contact prescription.
According to laser eye surgery review the average measurement of a base curve is between 8 0 and 10 0 3.
Different individual have different curvature of their eyes.
This base curve determines what type of fit is required for the lens to meet the curve of your eye.
Like clothing just because you re a bc 8 6 in one brand doesn t mean.
Those features ensure comfort and encourage eye health including allowing proper oxygen to the eye.
Oculus dexter the latin term for right eye os.
Reading number the steeper the curve of your eye.
If you realize that you ve gotten contact lenses with an incorrect base curve you may feel it.
What happens if the base curve size is wrong.
Oculus sinister the latin term for left eye pwr.
A lens with a base curve of 8 6 is steeper than a lens with a base curve of 8 9.
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.
The lower your b c.
Base curve bc of contact lens is to general measurement of the back surface of contact lens.
The base curve or bc is the radius of the back of the contact lens the part that sits on your eye 3.
Power also referred to as sphere or sph bc.
