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. Your eyeglass prescription contains other terms and abbreviations as well. Sphere (SPH) and Cylinder (CYL) always have a (+) or (-) sign. ", Sunglasses, Spectacle Frames, Spectacle Lens and Magnifying Spectacles.. If in doubt just enter your prescription as you see it, if youre not sure what type of lenses are suitable, hover your mouse over the question mark next to the lens type to reveal more detailed information about the product. An eye prescription specifies the values needed for your corrective eyewear. The base value will show either in or out, or up and down, indicating the direction the prism should be angled. When no correction for SPH is required the optician will write "Plano", "", "0.00" or just leave the space blank. A minus sign () means it's correcting nearsighted astigmatism, while plus sign(+) means it's correcting farsighted astigmatism. If nothing appears in your CYL column, you do not require astigmatism correction. It indicates the amount of lens power needed to correct astigmatism, measured in diopters. Different prescriptions and how to enter your values on our site. Naturally, a prescription will contain values for the correction of both of your eyes. 2000-2023 AAV Media, LLC. Plano, Infinity, 0.00- Basically 0.00 or no correction is required for that part of the prescription. Traditional eyeglasses are usually single vision lenses with one pre Metal frames are suitable for wearing. If you see the "sph" in the "cyl" box . Page published on Thursday, 21 February, 2019. The cylinder is the indication of the condition, astigmatism, in which the cornea is shaped irregularly causing distorted or blurred vision. The "Near" row or "Near Addition" contains the information required to correct your near vision. BVD- Back Vertex Distance is the distance required from the front of your eye (cornea) to the back surface of the corrective lens. 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. If the SPH value is 0.00, or noted by Plano, Pl, or an infinity sign, you do not have a vision distance problem. The "Distance" row contains the values required to correct your distance vision for the respective eye. The CYL basically represents the main differences in the weakest as well as greatest eye powers which are usually separated by degrees (90). Knowing how to read an eyeglass prescription is essential! We can offer up to 3.00 Dioptre's of prism online however if yours exceed this or if you have more than one direction for each eye please contact us to confirm suitablility and availability. Axis is the direction in which the astigmatism . & Worries-free! This correction is often used for driving, television and general wear (walking around). In this case, the eye doctor has prescribed -2.00 D sphere for the correction of myopia in the right eye (OD). This is why you need to go to a local optician, not buy online. The sphere (Sph) 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.). E.g. or a superscript triangle when written freehand), prescribed to compensate for eye alignment problems. In SPH, the minus sign is the indication of nearsightedness (far away objects are blurred). At first glance, the details may seem quite confusing. This ensures that they can see clearly in class; poor vision can seriously impact a childs learning. You'll notice the CYL and AXIS values are the same for both distance and near. Astigmatism is often present at birth, but it can develop, or become more severe, as you get older. Get the latest updates on new products and upcoming sales, 2023 This measurement is important as it explains at what distance your lenses should sit from your eyes. What Is The Difference Between A Retinal Tear And A Retinal Detachment? What does sphere cylinder and axis mean? (Some doctors will add "DS" for "diopters sphere;" others will leave this area blank.). Sphere (SPH) and Cylinder (CYL) always have a (+) or (-) sign. What does SPH DS mean? Like SPH and CYL, optometrists measure ADD in increments of 0.25 diopters. The left eye (OS) is being prescribed -1.00 D sphere for myopia plus -0.50 D cylinder for the correction of astigmatism. This is the abbreviation for the Latin termoculus uterque, which means "both eyes.". The axis indicates the angle (in degrees) between the two meridians of an astigmatic eye. For more information, please see our. Free Gifts with Purchases Over $100 | Learn More. Pro Tip - Make sure to pay particular attention to whether the values are a + or -. The minus sign and the plus sign next to the Cylinder numbers are also for nearsightedness and farsightedness. How Do You Keep Your Glasses From Fogging Up With A Ski Mask? What is segment height and how do you measure it? You may also have a column labeled OU, which means oculus uterque, or both eyes. The two rows refer to your right (OD) and left (OS) eyeswith the right eye always on the upper row. Unlike typical Rx formats, with values going from left to right, the vertical Rx values are listed top to bottom. I agree to Olives, How to Know If You Need Glasses? When no correction for SPH is required the optician will write "Plano", "", "0.00" or just leave the space blank. Sphere (SPH) - The term "sphere" means that the correction for nearsightedness or farsightedness is spherical, equal in all meridians of the eye. In addition, most prescriptions willshow your pupillary distance (PD), the horizontal distance between your pupils. By Email or 0330 165 6900, Site Map They may only write it once, but it normally applies to both eyes and is almost always the same value for both eyes (e.g. A glasses prescription can be displayed in a number of ways. This shows how much focal point power, estimated in diopters (D), endorsed to address myopia or farsightedness. 844-249-8359 Available 24 hours a day, 7 days a week. A cylinder forms a focus 90 degrees to its axis. Prism refers to the amount of prismatic power needed to correct eye alignment problems, measured in prism diopters. 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. However, there are other parameters, such as CYL which means the astigmatism part and AX which means the axis position in the astigmatism. OD is your right eye. When reading your glasses prescription you will find values under the headings of SPH, CYL, AXIS and sometimes PRISM & BASE. We use cookies to personalize content, to provide social media features and to analyze our traffic. These are abbreviations for the Latin terms oculus dexter and oculus sinister. Youll typically find the abbreviates OD and OS on the left side of your prescription. ODstands for oculus dexter, the Latin term for right eye., OS is your left eye. BVD - Back Vertex Distance is the distance required from the front of your eye (cornea) to the back surface of the corrective lens. 5. Sphere: The sphere (SPH) on your prescription indicates the lens power you need to see clearly. Youll often see this terms on eyeglass prescriptions. It would be entered on our website as below: Our online prescription form initially displays the most common format, Distance with a Near Add. She also has an interest in Eastern medicine practices and learning about integrative medicine. If you are trying to reach us outside of these hours please email us at [emailprotected] and we will respond the next working day. However, if you have a CYL value, you must have a corresponding Axis value. Our entire range of womens prescription designer glasses. | The number under the add column tells us the 2nd lens prescription needed for multifocal lenses. The cylinder is the amount of power change from the sphere in one meridian. Generally, it will range from +0.75 to +3.00 D and will be the same power for both eyes. This format is less common in the US. The Sphere is also used to correct the nearsightedness or farsightedness. If your glasses are for distance only, this will not be an issue. Our entire range of mens glasses suitable for varifocal lenses. They can also be written anywhere on the prescription. Contact us, Mon. For more help finding your perfect pair of glasses, see our complete Size Guide. The optical centre of each lens should be placed directly in front of the centre of each of your pupils. These are the abbreviations that denote to Oculus Dexter and oculus sinister in Latin and mean left eye and right eye. It will be a number between 1 and 180. Should I get a second opinion? Most reputable online suppliers like Spex4Less will offer a variety of forms for you to enter your prescription details in to. Get news, offers and hand-drawn stickers by Mila, our co-founder Shing's daughter! What face shape best suits cat eye glasses? The term sphere refers to the fact that distance vision correction is spherical, or equal in all meridians of the eye. Click here if your prescription looks different to this form. as shown in the image below. What does "SPH" appearing under Cylinder on my prescription mean? There will also be a number in the axis column thats needed for astigmatism correction. How to enter your glasses prescription online. The AXIS, in degrees, is a number between 0 and 180. If your prescription includes a BVD, it is important that the lenses sit at the correct distance to ensure comfortable vision. Cylinder axes range from 0 to 180, and are based on a hemispheric protractor. Melody Huang is an optometrist and freelance health writer. Axis: An axis number will also be included if you have an astigmatism. If this column is blank, it means you have no astigmatism. You will also have a corresponding "AXIS" value (see below).When no astigmatism correction is required the optician will leave the box blank. If for any reason you are not satisfied with your order, we will replace or exchange your glasses/lenses. CYL, or cylinder, refers to the amount of astigmatism correction you need. In SPH, the minus sign is an indication of which condition? What does SPH mean for glasses? If this is the case, your prescription will display SPH, CYL & AXIS values in both the "Distance" and "Near" sections of the prescription. In addition, you will see the initials OD and OS written on your eye prescription. Press question mark to learn the rest of the keyboard shortcuts. If you are farsighted, you will see a plus sign(+) next to the Sphere number. Cylinder: The cylinder (CYL) number indicates the . By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. The value may be as high as 10 and may go up in steps of or 1 Prism Dioptres. 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. 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. This is a common question when the person who consults eye specialists encountered the eye prescription. If the glasses help to improve the vision, then the person is not legally blind. When the person has no astigmatism, the perfect eye shows 0 diopters. The measurement is Prism Dioptre. It is the amount of magnification required to "ADD" to the "SPH" value of your "Distance" prescription to correct your near vision. 10 Signs You Need Glasses may be helpful. The "ADD" value applies to both eyes and can sometimes be written only once on the prescription, even though the addition is required for both eyes. 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? 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. 1. It is used to correctly orientate the cylinder correction when making your glasses. This doctor has elected to add "SPH," to confirm the right eye is being prescribed only spherical power. Posted by otakugrey. This number will appear as a decimal (0.5) or fraction (), followed by two letters indicating the base direction: There may be additional information written by your optometrist or ophthalmologist regarding your eye health. Now you know the ABCs and the ODs and OSs of your eyeglass prescription, so you can make sense of your eyeglass prescription. You should also find a row of values provided for "Distance" and for "Near". DS (Dioptres Sphere) means you only have a Sphere power. A positive value, or a prescription with a plus-sign (+), means that your child is farsighted. Some eyeglass prescriptions may require a PD (pupillary distance) measurement. Remember, eyeglasses prescriptions are different than prescriptions for contact lenses. 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. Plano, Infinity, 0.00, - Basically 0.00 or no correction is required for that part of the prescription. 'Sphere' is basically a measure of how strong your prescription needs to be. During an eye exam, your doctor will determine whether you need vision correction. Knowing what they mean will also help you more easily discuss your prescription with your eye care professional. Some people may have prism in two directions for one eye, for example; Prism 2.00 Base IN & 1.00 Base UP. AXISAn AXIS will only be found on your prescription if there is a CYL value for the same eye. Cyl = cylinder or the amount or power of the astigmatism correction. All frame measurements can be found in the details tab on our product pages. What is CYL in glasses? Axis refers to the lens meridian with no cylindrical power to correct astigmatism. By continuing to shop we will assume you are happy to receive all cookies. 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. 2023 Lensmartonline.com.All rights reserved, FREE SHIPPING FOR ORDER OVER $65 (REMOTE AREA NOT COVERED) / Buy 1,Get Other Frames 50% Off(Not eligible for frames under $10). Similarly, the values concerning the correction of your left eye may be indicated as "LE", "Left", "Left Eye" or "OS" which is an abbreviation for Oculus Sinister, the Latin term for "Left Eye". Newer Post . Warby Parker has stylish, high-quality frames at affordable prices. On your eyeglasses prescription, the information for your right eye (OD) comes before the information for your left eye (OS). What is the difference between polarized and non-polarized lenses? Your optician may or may not write DS (Dioptres Sphere) in the CYL box. We may earn commissions if you purchase something via one of our links. The cyl power has its axis at the 180 meridian, meaning the horizontal (180-degree) meridian of the eye has no added power for astigmatism and the vertical (90-degree) meridian gets the added -0.50 D. Both eyes are being prescribed an "add power" of +2.00 D for the correction of presbyopia, and this eyeglass prescription includes a prismatic correction of 0.5 prism diopter in each eye. CYL is the amount of astigmatism correction you need, and Axis determines the lens angle required to correct your astigmatism. All Opticians and Doctors worldwide work to the same procedures when writing a prescription, which can be printed or written in a similar fashion to this sample prescription. The number 90 means the vertical meridian of the eye and the number 180 means the horizontal meridian. This indicates the amount of lens power, measured in diopters (D), prescribed to correct nearsightedness or farsightedness. You can then go ahead and enter the prescription as follows: By clicking the link Need Help? What Do The Values On Your Prescription Mean? Whats more, if an eyeglass prescription includes cylinder power, it also must include an Axis value, which follows the CYL power. What does 165 axis mean - One tool that can be used is What does 165 axis mean. Medically Reviewed by Dr. Melody Huang, O.D. Sphere refers to the power of your lens (measured in dioptre units) to correct the degree of short or long sight you have. Clicking 'I have TWO complete rows of figures on my prescription" will open up new option boxes for you to open your prescription. You qualify for free shipping in the US! This value is the amount to add on to the distance SPH values to ascertain what the full Near prescription should be. What does Axis mean for glasses? Children should have their first eye exam when they are around six months old, and then another just before they start school. CYL (Cylinder) CYL is a '+' or '-' value in 0.25 steps and is required to correct your astigmatism. Copyright 2022 VisionCenter.org. The PD/Pupillary Distance is generally measured during a sight test, but is not routinely written on a prescription, you can ask for this from your Opticians, or ask them to add it to your prescription when you are tested. If you have an astigmatism, indicated by an axis and cylinder number on your prescription, it means that the front of your eye is irregularly shaped. VA, Visual Acuities - These values describe your vision (visual acuity) but are not needed to make your glasses. OD and OS are abbreviations of the Latin words oculus dexter and oculus sinister, respectively. The AXIS, in degrees, is a number between 0 and 180. There is no astigmatism correction for this eye, so no cylinder power or axis is noted. If you require progressive lenses, your prescription willdisplay a value under the ADD (addition) column. Sphere means the spherical correction where the meridians of the human eye are equal. This is the amount of prismatic power, measured in prism diopters ("p.d."