& Worries-free! Though the use of these abbreviated Latin terms is traditional for prescriptions written for eyeglasses, contact lensesand eye medicines, some doctors and clinics have opted to modernize their prescriptions and use RE (right eye) and LE (left eye) instead of OD and OS. For more help finding your perfect pair of glasses, see our complete Size Guide. This indicates that your lens should be shaped to correct near vision. The number under cylinder provides the lens power needed to correct the astigmatism. 6. This means your lenses will be shaped to improve your distance vision. With our 14-Day Fit & Style Guarantee, you can request a refund or exchange a new pair, hassle-free! Theplus (+) orminus (-) sign before SPH indicates whether you are nearsighted or farsighted. It does not matter whether the correction is of farsightedness or nearsightedness; it is always in spherical form. If the glasses help to improve the vision, then the person is not legally blind. Designed in Singapore for diverse tastes (and noses). It is measured with the unit diopters (D), indicating the lens power of the glasses. At first glance, the details may seem quite confusing. to Fri (9am - 5pm) These glasses are often worn full time. That is to say, the OD means the right eye and OS means the left eye. Most online retailers ask you to read and input your prescription into their order form, but if you dont know how to read your prescription, that process can get complicated. Optometrists measure SPH values in increments of 0.25 diopters, and when people talk about their prescription degree, theyre usually talking about their sphere value. [+/-Cylinder].axis [some angle between 0 and 180 degrees]. 1. The BASE value will be displayed as BU or UP (Base UP), BD or DOWN (Base DOWN), BI or IN (Base IN) or BO or OUT (Base OUT). GogglesNMore All Rights Reserved. If you have an astigmatism, you will find a "+" or "-" value in this box. Your prescription may have a base column, or it may be included in the same column as prism this gives further information about the required prism correction, telling us the orientation needed in the lens. ; values are usually entered with computer, but may be handwritten by doctor. It indicates the amount of lens power needed to correct astigmatism, measured in diopters. What does SPH mean for glasses? This indicates the amount of lens power, measured in diopters (D), prescribed to correct nearsightedness or farsightedness. Our online prescription form initially displays the most common format, Distance with a Near Add. Spex4Less, Everite House,Carr Lane, Hoylake,Wirral, CH47 4BG. The number 90 means the vertical meridian of the eye and the number 180 means the horizontal meridian. If you are nearsighted, you will see there is a minus sign(-) next to the Sphere number. If nothing appears in this column, either you have no astigmatism, or your astigmatism is so slight that it is not really necessary to correct it with your eyeglass lenses. What Do the Abbreviations on My Glasses Prescription Mean? Your prescription gives us, your Opticians or Doctors recommendation for clear and comfortable vision. By Email or 0330 165 6900, Site Map If your prescription only shows the SPH box with a value, leave the CYL and AXIS blank. As you can see in the first example (Standard GOS 2 Glasses Prescription) the optician has listed the patient's complete distance prescription on the top row and the complete near prescription in the bottom row. Marketing cookies are used to offer personalized advertisements. OS -1.00 -0.50 x 180 +2.00 add 0.5 p.d. Our entire range of prescription glasses for Women. Cylinder means the amount of lens power for astigmatism and shows the differences between the greatest and weakest powers of the eye. Msg frequency may vary. Most values range from 0.00 to +/- 20.00 and go up in steps of 0.25. The doctor wrote "SPH" in the Cylinder column. Youll typically find the abbreviates OD and OS on the left side of your prescription. SPH, or sphere, is the amount of lens power needed to correct nearsightedness or farsightedness, whereas CYL, or cylinder, is the amount of lens power needed to correct astigmatism. A nearsighted prescription will feature a number with a minus (-) symbol in the sphere box. However, if you have a CYL value, you must have a corresponding Axis value. Our entire range of womens prescription designer glasses. Axis - If an eyeglass prescription includes cylinder power, it also must include an axis value, which follows the CYL power. Now you know the ABCs and the ODs and OSs of your eyeglass prescription, so you can make sense of your eyeglass prescription. This indicates the amount of lens power, measured in diopters (D), prescribed to correct nearsightedness or farsightedness. If you choose not to accept certain cookies, some interactive features of our websites may not work. When you enter your prescription during checkout, please select "Not Applicable" for all Cylinder and Axis fields, thank you. The Zenni Optical website says I need that bit, but all it let's you input are positive or negative numbers, I can't write in SPH even if I knew what it mean. Should I get a second opinion? The base value will show either in or out, or up and down, indicating the direction the prism should be angled. A cylinder forms a focus 90 degrees to its axis. The second prescription shows the patients complete distance prescription for the right and left eye followed by a reading addition value of +2.25. You can view our cookie policy here. It does not matter whether the correction is of farsightedness or nearsightedness; it is always in spherical form. Commonly, this number will be different for each eye. The BVD stands for Back Vertex Distance, this is a measurement that is included on any prescription where the sphere or cylinder powers are higher than + or - 5.00D and to a lesser extent some prescriptions where it is less than this power. These links allow you to toggle the form so that it appears the same as the hard copy of your prescription, some common examples are shown below. 'Sphere' is basically a measure of how strong your prescription needs to be. Melody Huang is an optometrist and freelance health writer. Cylinder power always follows Sphere power in an eyeglass prescription. Below is a standard NHS prescription that has been written as two full lines of prescription: You can edit the form by clicking the link Need Help? Prism powers will always be accompanied with a direction which is usually seen as a base diresction such as IN, OUT, UP and DOWN; for example; Prism 2.00 Base IN. Sphere (SPH) - The term "sphere" means that the correction for nearsightedness or farsightedness is spherical, equal in all meridians of the eye. You qualify for free shipping in the US! Please note you can also upload a copy of your prescription during checkout and our Optometrist will check it against what you have entered on your order and you will be notified if there are any discrepancies. What is CYL, AXIS and SPH? OD and OS are abbreviations of the Latin words oculus dexter and oculus sinister, respectively. When people talk about their eye degree or power, they are usually referring to their SPH value. The measurement is in Degrees. SPH is the abbreviation for the word sphere. If a prescription includes cylinder power, it must be followed by an axis. This doctor has elected to add "SPH," to confirm the right eye is being prescribed only spherical power. The axis is the astigmatism orientation. The axis is the astigmatism orientation. This figure is an indication of how much extra power is required on top of the distance prescription for near or intermediate glasses. What does sphere cylinder and axis mean? Sometimes they need to be adjusted by professionals. Older Post Sphere (SPH) and Cylinder (CYL) always have a (+) or (-) sign. This is the most common format with clearly printed fields for OD, OS, SPH, CYL, etc. And what about all those abbreviated terms, such as OD, OS, SPH and CYL? A number over 5 is generally considered to be on the stronger side. A minus (-) symbol next to this number means youre nearsighted, and a plus (+) symbol means the prescription is meant to correct farsightedness. might be bigger than you would like! A prescription for correcting eye alignment issues will include a PRISM and BASE value. This ensures that they can see clearly in class; poor vision can seriously impact a childs learning. Cylinder (CYL) Cylinder indicates the amount of lens power needed for astigmatism. CYL (or Cylinder) indicates you have a condition where the cornea and/or lens of the eye are irregularly shaped causing blurred vision, in other words, astigmatism. In its simplest form, a prescription for glasses will feature a table with two rows and three columns. Analytics cookies are used to understand how you interact with our content. Notable terms include: Sphere (SPH) - The term "sphere" means that the correction for nearsightedness or farsightedness is spherical, equal in all meridians of the eye. If the axis changes by more than 90, you need to consult an eye specialist. It is usually separated by 90 degrees. The sphere is the indication of how strong the lenses need to be in order to correct the vision. Cyl = cylinder or the amount or power of the astigmatism correction. Still dont know how to look for your perfect fit? Cylinder: The cylinder (CYL) number indicates the . All these are used for the distance correction measurement. Youll often see this terms on eyeglass prescriptions. Axis is the angle in which the cylinder correction should be. Add, Near Add, Reading Addition - These all relate to your reading addition and can be written anywhere on the prescription. This just means the eye has difficulty focusing at certain angles. The first thing to understand your eyeglass prescription is knowing what "OD" and OS" means. BVD - Back Vertex Distance is the distance required from the front of your eye (cornea) to the back surface of the corrective lens. Your prescription will usually contain the following: Your optometrist or ophthalmologist will perform an eye examination to determine these values. Cylinder axes range from 0 to 180, and are based on a hemispheric protractor. Specific parts of Rx: To expand on dr. Proffitt's answer, sph = sphere; if this is a negative number, the prescription is a myopic or nearsighted prescription and a positive number dictates a farsighted or hyperopic prescription. | Common Abbreviations That Appear on Your Prescription. In the context of an eye prescription, OD means right eye and OS means left eye. Click here if your prescription looks different to this form. as shown in the image below. What does that mean. The number under 'cylinder' provides the lens power needed to correct the astigmatism. CYL is the amount of astigmatism correction you need, and Axis determines the lens angle required to correct your astigmatism. Terms of sale It is used to correctly orientate the cylinder correction when making your glasses. If not, keep on your reading and you will find the full explanations in the following part. OS is an abbreviation of the Latin oculus sinister which means left eye. Free Gifts with Purchases Over $100 | Learn More. Do not worry about entering your prescription details online. "How to Read Your Eyeglass Prescription. If you need a pair of glasses, the KoalaeyeOptical may be a good choice for you. Sometimes opticians use the word 'Add' or 'Near' instead of 'addition'. Pupillary distance explained: how to measure PD. The 20/20 vision is the correct vision for normal eyes. Here are some common prescription types to help you navigate yours. The Sphere is also used to correct the nearsightedness or farsightedness. The number under the add column tells us the 2nd lens prescription needed for multifocal lenses. A number between +/-.025 to +/-2.00 is considered mild, a number between +/-2.25 to +/- 5.00 is considered moderate, and a number greater than +/- 5.00 is considered severe. Axis is the direction in which the astigmatism . Swim Goggles Non-Rx: Giggly Goggles for Kids, All Swim Goggles Non-Rx: Giggly Goggles for Kids, Anti Blue Light Glasses / Blue Block Glasses, Replacement Parts & Accessories| Rec Specs, Prescription Ski Goggles Inserts and Ski Goggles, Partnerships with Ophthalmologists / Optometrists / Eye Health Professionals. COPYRIGHT document.write(new Date().getFullYear()); ZENNI OPTICAL , INC. ALL RIGHTS RESERVED. A number with a minus symbol before it means you are nearsighted, and a number with a plus symbol, or no symbol, means you are farsighted. Page published on Thursday, 21 February, 2019. ; values are usually entered with computer, but may be handwritten by doctor. What is SPH in a Glasses Prescription? These include: Sphere indicates the amount of lens power, measured in diopters(D), prescribed to correct nearsightedness or farsightedness. It is not a condition, or disease. The temple should be long enough to keep the frame securely in place without any pressure on your ears. Press J to jump to the feed. This correction is often used for driving, television and general wear (walking around). What Do The Values On Your Prescription Mean? Essentially this means correction for Astigmatism is not required for the prescription being considered. 10 Signs You Need Glasses may be helpful. The measurement is Prism Dioptre. 2000-2023 AAV Media, LLC. Get news, offers and hand-drawn stickers by Mila, our co-founder Shing's daughter! If the PD/Pupillary Distance for the glasses is not set correctly then your eyes may have to strain to look through them, this can lead to headaches, eyestrain, visual distortion and in severe cases, double vision. The term "sphere" refers to the fact that distance vision correction is spherical, or equal in all meridians of the eye. CYL is a + or - value in 0.25 steps and is required to correct your astigmatism. The cylinder is the amount of power change from the sphere in one meridian. There will also be a number in the axis column thats needed for astigmatism correction. Sphere, often written as SPH, means that the correction for nearsightedness or farsightedness is spherical, equal in all meridians of the eye.

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