According to the ohio state university medical center although contact lenses are similar to a spectacle prescription contact lens measurements usually have different numbers 1 4 5.
What does bc stand for contact lenses.
A lens with a base curve of 8 6 is steeper than a lens with a base curve of 8 9.
Use this guide to read your contact prescription.
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.
Although many people s eyes are a globe type of shape there are still unique variations that prohibit contacts from being a one size fits all item.
Os stands for ocular sinister the latin term for the left eye.
The bc or base curve measurement indicates the back curvature of your contact lens in millimetres.
Different individual have different curvature of their eyes.
This stands for base curve.
If you see an ou on your label meaning ocular uterque it means the prescription is the same measurement in both eyes.
It also means your contact lenses will be less likely.
The base curve and diameter should be written on your contact lens prescription.
Also your site states 3 lenses per box.
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.
Let s start with the letters bc which stand for base curve.
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 prescription may also include how often your contacts should be replaced monthly bi weekly weekly daily to avoid eye damage through infections caused by the buildup of protein calcium lipids and other substances found.
This base curve determines what type of fit is required for the lens to meet the curve of your eye.
There are several codes and figures on your contact lens prescription.
Power is the strength of the contact lens the part that magnifies and helps correct vision.
Power is written as a unit of measurement called a diopter.
Different contact lens brands of both corrective lenses and colored contact lenses make products in different sizes.
Od or ocular dexter is latin for the right eye.
What is the base curve bc of contact lens.
What does each part of your prescription mean.
It s the back curvature of your contact lens which is measured in millimeters.
