This will also ensure that your contact or eyeglass prescription is up to date. To keep your eyes in optimal health you should have an annual eye exam. For these prescriptions, you will see a number in the “ADD” column. For bifocal or progressives (multi-focal) prescriptions, your lenses will correct your vision for both near and far, and often times intermediate as well. If you have single vision correction, this means your vision is corrected for either farsighted or nearsighted, but not both.įor single vision prescriptions, the “ADD” column will be blank. Prescriptions look different depending on if you have a single or multi-focal prescription.
Spectacle prescription plus#
You will see a plus sign or minus sign in front of your eyeglass prescription, and that number is shorthand for farsightedness or nearsightedness.Ī “+” means that you are farsighted (trouble seeing things close up).Ī “-” means you’re nearsighted (trouble with seeing far away).ĭO YOU HAVE A SINGLE VISION OR MULTI FOCAL PRESCRIPTION? The further from zero that the numbers are, the more correction you need. There will be a number included on your prescription for each aspect of your vision that needs to be corrected. It’s used to correct presbyopia (the inability to see up close). It also tells the lens strength needed to fix it.ĪXIS- This describes the direction and degree of your astigmatism.ĪDD- This is the added magnifying power you need in the lower part of a multi-focal lens. This is a condition where the cornea is irregularly shaped and causes blurred or distorted vision. If you see this, this indicates astigmatism. If you happen to see the letters ADD, this is how much more power you need if you are getting bifocals or progressive lenses.ĬYL- This is short for cylinder. SPH- This is short for sphere, and basically tells you how powerful your prescription needs to be in order to correct your vision. O.U.- This is oculus uterque, meaning both eyes.Īlong the top, you might see different verbiage that generally has to do with measurements related to different aspects of your vision. O.S.- This is oculus sinister, meaning left eye. O.D.- This is oculus dexter, meaning right eye. It will contain terms, abbreviations, and numbers.Īlong the left-hand side, you might see these abbreviations. Most of the time you will find that your eyeglass prescription is written in a grid-like format. Whether you’ve worn glasses for years, or this is your first time, understanding your prescription will give you an insight into the health of your eyes as well as your overall health. You also happen to look at your prescription and start to wonder what all those letters and numbers exactly mean. Specifies in what direction the prism is to be set.Now that you just finished having your eye exam, you have your prescription in your hand and you’re wondering what style eyeglass frames will look best on you. Specifies any vision displacement, like double vision. In case you have values in this field you need to contact us before you order.
Spectacle prescription drivers#
Example: you need an acuity of 0.5 in order to get a drivers license, which means you should be able to read signs from 20 meters away. Visual acuity describes the acuteness or “sharpness” of vision that is the ability to perceive small details. Either way you may choose from our dropdown list your PD according to your prescription. Farsightedness means a person can see distant things but nearby objects. The PD is an essential measurement, and may be written with the Pupillary Distance listed for each eye respectively, for example RE: 31,5 LE: 31,5, or as one measurement PD: 63. Identify a + sign: Positive numbers, such as +1.00, explain how strong a lens needs to be to correct for farsightedness. PD is the distance from the center of the pupil (black circle) in one eye to the center of the pupil in the other eye. The SPH number on a glasses prescription is listed as a positive (+) or negative (-) number. Typical SPH numbers range between 0.00 and +/- 20.00.
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If the SPH value is 0.00, or noted by Plano, Pl, or an infinity sign, you do not have a vision distance problem. Is a measurement used to accurately center the lenses in the frame that you have selected. An SPH number indicates if you are farsighted or nearsighted. Is short for Reading Addition (Sometimes referred to as SEG POWER as well)- It is additional plus power in the lower portion of a multifocal lens (progressive or bifocal) that is required for near vision. Will only appear if there is a value for cylinder (CYL), as it relates to the cylindrical lens and denotes a reference point that indicates the direction of the power of the cylindrical lens. There may not be a value of cylinder in your prescription. There is always a plus (+) or minus (-) sign present.
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Specifies the strength of lens required to correct your focus - a plus sphere to correct long-sightedness (hyperopic - difficulty focusing on close objects) and a minus to correct short sightedness (myopia - difficulty focusing on distant objects.)