how to read an eye prescription

So now that we know that an eye prescription is made up of numbers and signs here are a few examples to practice breaking it down. Depending on the kinds of lenses you need you may see other terms on your eye prescription including.

Prescription Eyeglasses Lenscrafters Prescription Eyewear Contact Lenses

R refers to your right.

. This number always has a sign. And the other is the distance of the centre of the right eye to the nose bridge. This is very simple to understand. Understanding the details.

These numbers represent diopters the unit used to measure. For multi-focal glasses as well as reading and computer glasses your Rx will include an ADD or NV value. This is a measure in dioptres of how powerful the lens needs to be to correct either nearsightedness. Eye doctors use the abbreviations OD and OS to denote your right and left eyes.

Refers to your right eye prescription. The first one is for the distance between the centre of your left eye to the nose bridge. RE or OD Right Eye. It indicates the amount of lens power needed to correct astigmatism measured in diopters.

To convert a multi-focal prescription for single vision reading glasses simply combine the Add number and the. Commonly this number will be different for each eye. SPH Sphere of the eye. Firstly youll see that your prescription details are divided into two sections R and L.

For single vision reading use the prescription can be read as. A in the box indicates that you are long-sighted which means you find it difficult to see things close to you. During a comprehensive eye exam your eye doctor will test for things like colour blindness ocular motility eye movement. In the above example for the right eye this would be -200 and 175 which equals -025.

This will indicate if you need a prescription for reading and is applied to bifocal and varifocal lenses to correct presbyopia. A shows that you find it. A glossary of eye prescription abbreviationsADD stands for the additional lens power needed to make it easier for you to read. The lens ability to refract light.

How Do Eye Doctors Determine Your Prescription. Int ADD If you require glasses for visual work that is in between near and far such as computer work you. You may also have an Inter Add for computers or other tasks like. Reading Your Eyeglasses Prescription.

Cylinder abbreviated CYL follows sphere power in your eyeglass prescription. CYL Cylinder of the eye. Other Terms on Your Eye Prescription. Axis is a number between 1 and 180.

The type of Rx glasses may be noted on a. The first number in a prescription is the spherical correction often abbreviated as SPH. It in See more. This number is seen on prescriptions for reading glasses or the lower portion of bifocal or progressive lenses.

A plus sign in front of the number means you are farsighted and a minus - sign means you are nearsighted. A measurement will mean you have different prescriptions for distance and reading. Your eye doctor may give you a paper prescription that looks something like this. While there might be some minor variations between different eye prescription forms the generic doctors RX note will probably look very much like.

To find the right reading glasses add the sphere number to the ADD number. Correction number needed for astigmatism. This represents 1 diopter of nearsightedness.