The "Near" row or "Near Addition" contains the information required to correct your near vision. 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. A positive value, or a prescription with a plus-sign (+), means that your child is farsighted. A + in the box indicates that you are long-sighted which means you find it difficult to see things close to you. The term "sphere" means that the correction for nearsightedness or farsightedness is "spherical," or equal in all meridians of the eye. We use cookies to personalize content, to provide social media features and to analyze our traffic. When we look at the eye prescription written by our consultant, different questions come to mind. Naturally, a prescription will contain values for the correction of both of your eyes. Add is the added magnifying power applied to the bottom part ofmultifocal lensesto correctpresbyopia. The sphere is measured in Dioptre's, your prescription may have the word Plano or Pl or an infinity sign, this means that you are neither long nor short sighted but zero power for the Sphere, however you may have astigmatism - a CYL and AXIS on your prescription. These are the abbreviations that denote to Oculus Dexter and oculus sinister in Latin and mean left eye and right eye. Sphere, sometimes abbreviated as SPH, indicates the amount of lens power needed to correct nearsightedness or farsightedness. Remember, eyeglasses prescriptions are different than prescriptions for contact lenses. CYL, or cylinder, refers to the amount of astigmatism correction you need. The number appearing in this section of the prescription is always a "plus" power, even if it is not preceded by a plus sign. Colour blindness test: Do you see colours correctly? What does that mean. Sphere, often written as SPH, means that the correction for nearsightedness or farsightedness is spherical, equal in all meridians of the eye. Similar to SPH, optometrists measure CYL in increments of 0.25 diopters. SPH is a '+' or '-' value in 0.25 steps and is required to correct your nearsightedness (-) or farsightedness (+). In eye prescription, what does CYL means? This is only present if your eyes do not focus well together as a pair, such as in strabismus (eye turn). 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. . We always recommend attaching a copy of your prescription to the order, or fax this through or email it separately, we will double check the prescription this end to ensure the correct lenses are produced. ; values are usually entered with computer, but may be handwritten by doctor. CYL (Cylinder) CYL is a '+' or '-' value in 0.25 steps and is required to correct your astigmatism. CYL is the amount of astigmatism correction you need, and Axis determines the lens angle required to correct your astigmatism. Clicking 'I have TWO complete rows of figures on my prescription" will open up new option boxes for you to open your prescription. An astigmatism is where the eye is shaped slightly like a rugby ball or referred to as toric, not a perfect sphere like a football. Generally, it will range from +0.75 to +3.00 D and will be the same power for both eyes. See, Do Not Sell or Share My Personal Information. The "ADD" value may be written in the "Near Addition" space on your prescription. You'll notice the CYL and AXIS values are the same for both distance and near. The axis is defined with a number from 1 to 180. These numbers typically are the same for both eyes and range from +0.75 to +3.00. Axis is the direction in which the astigmatism . The axis indicates the angle (in degrees) between the two meridians of an astigmatic eye. The CYL and AXIS compensate for an astigmatism. Each spectacle lens will have an optical centre, this is a point on the lens where it performs the best and has the least distortion. But what exactly do all these abbreviations and numbers mean? Cylinder indicates the amount of lens power for astigmatism. 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. The term "sphere" means that the correction for nearsightedness or farsightedness is "spherical," or equal in all meridians of the eye. But don't worry, after reading this page you'll understand what all the details mean and you'll know how to read your glasses prescription correctly. We may earn commissions if you purchase something via one of our links. These will usually be specific types of corrective lens recommendations such as multifocal lenses, progressives, anti-reflective coating, photochromatic, or transition lenses. It would be entered on our website as below: Our online prescription form initially displays the most common format, Distance with a Near Add. Press question mark to learn the rest of the keyboard shortcuts. The Sphere is also used to correct the nearsightedness or farsightedness. How computer glasses can ease digital eye strain, How screen time effects child development, Importance of eye care and regular eye exams, What to expect at a comprehensive eye exam, Paediatric eye exam: How they are different. This is an important question because this is related to the eyes and gives answers related to different changes in the human eye. What is segment height and how do you measure it? Do you know the meaning of the Sphere, Cylinder and Axis? Sphere means the spherical correction where the meridians of the human eye are equal. Prism refers to the amount of prismatic power needed to correct eye alignment problems, measured in prism diopters. Do not worry about entering your prescription details online. The information on this free-form prescription is usually handwritten. And what about all those abbreviated terms, such as OD, OS, SPH and CYL? Do you know the meaning of the Sphere, Cylinder and Axis? Common Abbreviations That Appear on Your Prescription. If the number appearing under this heading has a minus sign (), you are nearsighted; if the number has a plus sign (+) or is not preceded by a plus sign or a minus sign, you are farsighted. Knowing what they mean will also help you more easily discuss your prescription with your eye care professional. 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. 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 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. By continuing to shop we will assume you are happy to receive all cookies. Cylinder power always follows Sphere power in an eyeglass prescription. It always follows the sphere power on an eyeglass prescription. 'Add' +2.50 - should be entered for both eyes). Plano, Infinity, 0.00, - Basically 0.00 or no correction is required for that part of the prescription. This is the most common format with clearly printed fields for OD, OS, SPH, CYL, etc. This number is always positive, even if it doesnt have a plus sign (+) in front of it. The numbers on your eyeglass prescription describe precisely how your glasses lenses should be cut. If not, keep on your reading and you will find the full explanations in the following part. 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". You must be logged in to manage your wishlist. The information provided on VisionCenter.org should not be used in place of actual information provided by a doctor or a specialist. What Does SPH mean? In the right eye, the prism is base down (BD); in the left eye, it's base up (BU). An eye prescription specifies the values needed for your corrective eyewear. She also has an interest in Eastern medicine practices and learning about integrative medicine. After reading this post, you may have gotten the answers. 5. When no correction for SPH is required the optician will write "Plano", "", "0.00" or just leave the space blank. OD is your right eye. Your prescription gives us, your Opticians or Doctors recommendation for clear and comfortable vision. Astigmatism relates to an issue in the curvature of yourcorneathat causes blurred distance and near vision, especially at night. A prescription for correcting eye alignment issues will include a PRISM and BASE value. Sphere (SPH) and Cylinder (CYL) always have a (+) or (-) sign. I promise not to get in a petty snit. ADD, or addition, refers to the amount of magnifying power you would need in multifocal lenses to see closer objects, like a book. On the prescription of eyeglasses, the cylinder typically follows the sphere power. You've probably asked yourself many times, what does my glasses prescription mean? In the vertical meridian of the eyes, the number 90 is used. What does "SPH" appearing under Cylinder on my prescription mean? What does VD mean on eye prescription? Standard msg & data rates may apply. Only a small percentage of eyeglass prescriptions include prism. The two rows refer to your right (OD) and left (OS) eyeswith the right eye always on the upper row. The CYL stands for Cylinder. ", Sunglasses, Spectacle Frames, Spectacle Lens and Magnifying Spectacles.. It is measured in diopters, the unit of measurement for the lens's refractive (light-bending) power. That is to say, the OD means the right eye and OS means the left eye. If you have an astigmatism, you will also have a corresponding "AXIS" value (see below).When no astigmatism correction is required the optician will leave the box blank. On any prescription, PD can be written in different ways: e.g., 62 (Single PD), 33/31 (Dual PD), or 62/60 (Distance PD/Near PD). But keep in mind, all eyewear is different, so its just a general reference. If youre looking for eyeglasses that can bend without breaking, look great and enhance your vision all at o My manafest refraction test was -50 -50 110 + 250, But my rx reads -50 sph axis +250. OOPS! How Do You Keep Your Glasses From Fogging Up With A Ski Mask? During an eye exam, your doctor will determine whether you need vision correction. OD and OS are abbreviations of the Latin words oculus dexter and oculus sinister, respectively. Your sph +4.00 means that the concave sphere with no astigmatism belongs to the hyperopia 400 prescription. If your glasses are for distance only, this will not be an issue. How to Measure your PD(Pupillary Distance), Choosing the Best Frames for Progressives, How to Replace Lenses in a Full-Rim Frame, How to Replace Lenses in a Half-Rim Frame. If you suffer from astigmatism, your prescription will indicate values for CYL and Axis. To convert a multi-focal prescription for single vision reading glasses, simply combine the Add number and the Spherical number. The higher the number on your prescription, the stronger your prescription is. Download Our Mobile App for Faster Checkout. For more help finding your perfect pair of glasses, see our complete Size Guide. 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. VA, Visual Acuities - These values describe your vision (visual acuity) but are not needed to make your glasses. Worried about the wrong fit? The cylinder is the amount of power change from the sphere in one meridian. Cylinder, abbreviated CYL, follows sphere power in your eyeglass prescription. 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. Plano, Infinity, 0.00- Basically 0.00 or no correction is required for that part of the prescription. 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 ADD value is also referred to as a "Near Addition" or "Reading Addition". Sphere means the spherical correction where the meridians of the human eye are equal. Balance - No values are required. Cylinder ( CYL) Cylinder indicates the amount of lens power for astigmatism. For example: SPH -3.25 CYL -1.25 AXIS 120. In AXIS, the lens meridian plays an important role. Different ways a prescription can be displayed.Common abbreviations that appear on your prescription. What do the values on your prescription mean? What does SPH DS mean? SPH, or sphere, refers to the amount of correction needed for nearsightedness or farsightedness. When people talk about their eye degree or power, they are usually referring to their SPH value. On the other hand, if your SPH value is +1.00, you are farsighted and need correction for seeing closer objects. BVD - Back Vertex Distance is the distance required from the front of your eye (cornea) to the back surface of the corrective lens.
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