Spectacle rx meaning full#
Spectacle rx meaning plus#

There is an advantage of being nearsighted though. This will make you unable to read small letter at 125 mm. You would be able to see any objects closer than 118 mm clearly. The higher the number, the more nearsighted. To find an optical shop near you, visit our Locations page. A minus sign (-) before your prescription means you are nearsighted. When you buy glasses at CEENTA, you should know your vision is in good hands. The opticians at all 12 of CEENTA’s optical shops are trained to read prescriptions and get you glasses that best suit your needs. If you don’t completely understand all this, don’t worry. For example, if the Add were +2.25 and the OD-Sph was -0.50, the new OD-Sph for reading glasses would be +1.75 if the Sph were +0.25, the new Sph would be +2.50. A Prism may be horizontal, vertical, or a combination of both, CEENTA Eye Ancillary Services Manager Jay Russell said. To convert a multi-focal prescription for single vision reading glasses, simply combine the Add number and the Spherical number. If you have numbers in these columns on your prescription, it means you need prism lenses to help properly align your eyes. PRISM: In some cases, a patient’s eyes may be misaligned, causing a condition like double vision. These are also written in increments of 0.25. This signifies that you aren’t just farsighted or nearsighted. Also, if you don’t have a Cylinder number, you won’t have an Axis number.ĪDD: If you need bifocals or reading glasses, there will be a value under ADD on your prescription. The Cylinder number is written on 0.25 increments, and the axis is measured in degrees and written in increments of 1. Since not everyone has astigmatism, these portions of the prescription are sometimes left blank. The numbers may be positive or negative, based on whether you are farsighted or nearsighted.Ĭylinder and Axis: Sometimes abbreviated as CYL and AX, these measure the level of astigmatism. These are measured in diopters and written in increments of 0.25. Sphere/Power: Sometimes abbreviated as SPH/PWR, this is your main eyeglass prescription strength. O.S.: This is the abbreviation for Oculus Sinister, the Latin term that means “left eye.”

O.D.: This is the abbreviation for Oculus Dexter, the Latin term that means “right eye.” Following the image is an explanation of these terms and numbers:

What do the numbers on an eyeglass prescription mean? Today, we’d like to help you understand exactly what you’re reading.īelow is a sample of an eyeglass prescription.

Spectacle rx meaning full#

In the following picture, you can see an eye prescription.Have you ever looked at your eye doctor’s prescription right after getting an eye exam? It’s full of abbreviations and numbers that can be very confusing on first glance. What’s more, if an eyeglass prescription includes cylinder power, it also must include an Axis value, which follows the CYL power. The number 90 means the vertical meridian of the eye and the number 180 means the horizontal meridian. The Axis in your prescription is usually measured from 1 to 180. The Axis means the angle between the two meridians of an astigmatic eye. In the third part, we will show you what the Axis in glasses is. Cylinder power always follows Sphere power in an eyeglass prescription.

Spectacle rx meaning plus#

The minus sign and the plus sign next to the Cylinder numbers are also for nearsightedness and farsightedness. If nothing appears in the Cylinder column, it indicates that you have no astigmatism, or your astigmatism is so light that there is no need to correct it with the eyeglass lenses. Cylinder means the amount of lens power for astigmatism and shows the differences between the greatest and weakest powers of the eye. In the second part, we will explain what the Cylinder in glasses is. What does SPH mean for glasses? After reading this part, you may get the answer. If you are farsighted, you will see a plus sign(+) next to the Sphere number. If you are nearsighted, you will see there is a minus sign(-) next to the Sphere number. The Sphere is also used to correct the nearsightedness or farsightedness. It is measured with the unit diopters(D), indicating the lens power of the glasses. Sphere, often written as SPH, means that the correction for nearsightedness or farsightedness is spherical, equal in all meridians of the eye. What does SPH mean for glasses? What is Cylinder in glasses? What does Axis mean for glasses? This post will explain them one by one. In the eye prescription, there are some important elements you need to know including Sphere, Cylinder, and Axis. Full Explanations: Sphere, Cylinder, and Axis in Glasses When you hold the prescription, have you ever been curious to know what the number and letters mean for your eyesight? Do you know the meaning of the Sphere, Cylinder and Axis? If not, keep on your reading and you will find the full explanations in the following part.

Nowadays, most of us wear glasses and most of us just take the prescription to the optical store to pick out a pair of glasses.