Bc Mean Contact Lenses

Different individual have different curvature of their eyes.

Bc mean contact lenses.

This base curve determines what type of fit is required for the lens to meet the curve of your eye. A lens with a base curve of 8 6 is steeper than a lens with a base curve of 8 9. Here s what those abbreviations mean. Use this guide to read your contact prescription.

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. 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. Like clothing just because you re a bc 8 6 in one brand doesn t mean. Both the base curve bc and diameter dia of a contact lens ensures a proper fit on your cornea and total eye surface.

Oculus dexter the latin term for right eye os. The lower your b c. 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. 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.

According to laser eye surgery review the average measurement of a base curve is between 8 0 and 10 0 3. The bc or base curve measurement indicates the back curvature of your contact lens in millimetres. Power also referred to as sphere or sph bc. Base curve of disposable soft contact lenses available in the market varies from 8 4 mm to 9 0 mm.

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. Base curve bc of contact lens is to general measurement of the back surface of contact lens. You ll also need this information if you want to order contact lenses online.

This measurement is usually written in millimeters or sometimes with the words flat median or steep. Reading number the steeper the curve of your eye. An example of a common base curve would be bc 8 7mm.