What Does Bc Mean When Ordering Contact Lenses
There are other things that could cause it to be different which only your eye doctor could tell you. This stands for base curve.
When ordering contact lenses you should always do so with a valid contact.
What does bc mean when ordering contact lenses. The unit of measure for sphere power is a dioptor or D. The base curve determines what type of fit is required for the lens to meet the curve of your eye. Contact lens manufacturers make lenses in 025 D power increments.
The base curve is the radius of the sphere that the back. Those abbreviations signify the prescriptions in your right eye and your left eye respectively. If you have a steep cornea you need a smaller base curve.
12112018 Sphere power is positive if you are farsighted and negative if you are nearsighted. The greater the sphere power is from zero the stronger the prescription. They know the codes that help your contacts fit properly and enable you to see clearly.
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. This is usually written in millimeters.
This number indicates just how steep or flat your contact lenses are in relation to your own specific eye features. What does contact lens cylinder and power mean. Base Curve - this refers to the back curvature of the contact lens measured in millimeters.
Oculus sinister the Latin term for left eye. The number that indicates your contact lens shape. While it seems counterintuitive the higher the base curve is the flatter the surface of your eyes are.
The diameter of the contact lens is also written in millimetres and determines the width that best fits your eye. Thankfully they mean something to the people who manufacture contact lenses and your eye doctor. 8302007 Base curve radius is usually abbreviated BCTypical values are from 80 to 100 mm.
7272017 The base curve of a contact averages in the range of 80 to 95 millimeters depending on the flatness or curves of the surface of your eye. The number indicates the steepness or flatness of the contact lens. Your optician will try and match the curve of your contact lens to the curve of your eye to find the best fitted contact lens for you.
This is important for comfort as the BC of your contact lenses should match your eyes natural curve as closely as possible to ensure a better fit when you are wearing your contact lenses. This number is important for the fit of your contacts because it will match up with the the curvature of your cornea. Cylinder a number between -400 and 400 Axis a number between 0 and 180 Cylinder and Axis are usually separated by X.
922016 Youve likely seen numbers beside the letters OD Ocular Dexter and OS Ocular Sinister. These settings which include power sphere and cylinder are those that your optician has defined as being the most effective for correcting your. This is measured so the lens fits perfectly against your eye and fits the shape.
However please be advised that does not mean the contact lens prescription would be the same as glasses. Its the back curvature of your contact lens which is measured in millimeters. The base curve determines what type of fit is required for the lens to meet the curve of your eye.
For best fit comfort and eye health its prescribed to match or complement the curvature of your cornea. 2122021 Base Curve BC. Today most contact lenses come in two base curve options.
Even though you dont have to know what everything means you may be curious. And read as times. BC or Base Curve.
This number indicates how curved your contact lens is. Every contact lens has a base curve. BC Base Curve a number between 80 and 100 DIA Diameter a number between 130 and 150 Power Sphere Rx a number between -20 and 20 For astigmatic patients we also need.
542011 Understand the base curve BC. Weve put together a quick guide to help you decode your contact lens. Your contact lens prescription is made up of different numbers with positive or negative - values that define the settings of your lenses.
This term describes how the curvature on the inside of the lens should be. According to the steepness or flatness of your cornea your prescription. This is usually written in millimeters or sometimes with the words.
The lower the number the steeper your. The number you may not be familiar with on your prescription or contact lens box is the one designated BC. 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 number is usually between 8 and 10. Flat median or steep. Toric Astigmatism correcting Prescriptions.
BC - Base Curve usually a number between 8 and 10 DIA - Diameter usually a number between 13 and 15 SPH - Sphere referred to as Power or PWR can be a negative or positive number Brand - The brand name or type of contact lens that your Eye Care Provider has fitted you for. Lets start with the letters BC which stand for base curve.
