Bc Mean Contact Lenses

Oculus dexter the latin term for right eye os.

Bc mean contact lenses.

Those features ensure comfort and encourage eye health including allowing proper oxygen to the eye. 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. 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. 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.

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. An example of a common base curve would be bc 8 7mm. You ll also need this information if you want to order contact lenses online. A lens with a base curve of 8 6 is steeper than a lens with a base curve of 8 9.

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. This base curve determines what type of fit is required for the lens to meet the curve of your eye. Base curve of disposable soft contact lenses available in the market varies from 8 4 mm to 9 0 mm.

The base curve or bc is the radius of the back of the contact lens the part that sits on your eye 3. Different individual have different curvature of their eyes. Oculus sinister the latin term for left eye pwr. Base curve bc of contact lens is to general measurement of the back surface of contact lens.

Both the base curve bc and diameter dia of a contact lens ensures a proper fit on your cornea and total eye surface. Use this guide to read your contact prescription. If you realize that you ve gotten contact lenses with an incorrect base curve you may feel it. Like clothing just because you re a bc 8 6 in one brand doesn t mean.

The bc or base curve measurement indicates the back curvature of your contact lens in millimetres. What happens if the base curve size is wrong. According to laser eye surgery review the average measurement of a base curve is between 8 0 and 10 0 3.