eye glasses what is pd number
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How to read my prescription If the PD of your basic prescription is 29.5/31.0, the PD for computer glasses would be 29.0/30.5 or 28.5/30.0. To convert a multi-focal prescription for single vision reading glasses, simply combine the Add number and the Spherical number.
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How To Read Your Eyeglass Prescription Cylinder power always follows sphere power in an eyeglass prescription. Axis. This describes the lens meridian that contains no cylinder power to correct astigmatism. The axis is defined with a number from 1 to 180. The number 90 corresponds to the vertical meridian of the eye, and the number 180 corresponds to the horizontal meridian.
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What is average pupillary distance for women? If you have bought the eyeglasses from the store, you could have the data of your pupillary distance. Usually the adult female common pd is 56 mm to 62 mm. However different people owns different situation. You should go to the store to have a eye check to get this information. Then you could buy the eyeglasses online.
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- Here are the definitions of the symbols/abbreviations used in a typical contact lens prescription: 1  Eye - Which eyes the prescription line item is for. 2  SPH - Sphere (this can also be referred to as Power or PWR) 3  BC - Base Curve (usually a number between 8 and 10)  DIA - Diameter (usually a number between 13 and 15)
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Pupillary Distance (PD) PD or pupillary distance refers to the distance in millimeters between the center of one pupil to the center of the other. Having a correct PD on your glasses prescription insures that you are looking through the ideal spot in your lenses.
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What is Pupillary Distance? How to Measure PD? 3. Without moving your head or the ruler open the left eye and close the right eye. Read the number that lines up with the centre of the pupil of the left eye. This number represents your Distance PD in millimetres. You have just used this technique to measure your distance PD. 4.
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- EYEMED ACCEPTABLE SERVICE CODES Effective 10/16/03 Lens Codes Basic Plastic Single Vision Lens Codes Acceptable Code Modifier S0504 SINGLE VISION LENS (ATHLETIC, SUNGLASS) V2100 PL/4.00 D V2101 4.25/7.00 D V2102 7.25/20.00 D V2103 PL/4.00 SPH;25/2.00 CYL V2104 PL/4.00 SPH;2.25/4.00 CYL V2105 PL/4.00 SPH;4.25/6.00 CYL V2106 PL/4.00 SPH; >6.00 CYL
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- Here are the definitions of the symbols/abbreviations used in a typical contact lens prescription: 1  Eye - Which eyes the prescription line item is for. OD - Right Eye. 2  SPH - Sphere (this can also be referred to as Power or PWR) 3  BC - Base Curve (usually a number between 8 and 10)  DIA - Diameter (usually a number between 13 and 15)
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How To Read An Eyeglass Prescription There may be additional numbers in a glasses prescription. For instance, if the basic prescription is followed by a small number with a superscript (1^) it indicates prism correction. There may be more than one set of prism numbers for each eye.
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- It's important to get your monocular PD and not binocular... Even if it is 66 binocular, it could be 30 on your right side and 36 on your left, so if you only use binocular PD your glasses could be 3 mm off in both eyes... People rarely have perfectly symmetrical faces.
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About Your Pupillary Distance (P.D.) To measure your Pupillary Distance (PD): 1  Place a millimeter ruler on the bridge of your nose. 2  Have a friend face you about arms length away. 3  Have your friend measure the distance between the center of your pupils (the black dots in the middle of your eyes).
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- To measure your PD: 1. Place the millimeter ruler on the bridge of your nose. 2. Have a friend face you about arms length away. 3. Have a friend measure the distance between the center of your pupils (black dots in the middle of your eyes). 4. Or do it yourself by looking in the mirror. By federal law your eye doctor must provide your current prescription and PD to you. As a guideline, most adults’ PD’s are between 55-65, with women at an average of 60 and men at an average of 64. Most kids’ PD’s are between 42-54.
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Buying Eyeglasses Online: A Good Idea? PD In order to customize your glasses, you have to figure out your PD, or pupillary distance, aka, the distance between your pupils. Once we have this information, we can determine how to place your lenses in your frame. Just ask your optician; they should have your PD on file. You can also measure your PD yourself.
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Understanding Your Glasses Prescription: What the Numbers Mean You may also see the word Add written below Distance on your prescription. The add number represents the magnifying power that will be added to the lower half of your progressive or bi-focal lenses to help restore your near vision. (No more having to hold menus at arm's length.) This number is typically the same for both eyes.
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About Your Pupillary Distance (P.D.) Ask Your Doctor. You can also get this information from your doctor or from a licensed optician. If you have two PD numbers on your prescription, you have either been given both the Distance/Reading or Right Eye/Left Eye. Here's what you do: Two same number: (Ex. 30/30) Add them together (Ex. 60 is your PD). Two low numbers*: (ex. 30/31) The first number is for the right eye (O.D.) and the second number is for the left eye (O.S.). *Place it in the Customer notes section of the order form. Two high numbers: (Ex. 62/59) First number is your Distance PD and the second is your Near PD (for reading-only glasses). As a Guideline: Most adults' PD's are between 55-65. Most kids' PD's are between 42-54.
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SIZE GUIDE Most of our sunglasses and eyeglasses have the size measurement printed on the inside of the left temple (the piece that goes behind your ear). This usually consists of three numbers - sometimes only the first two are printed - similar to this: 50 20 150.
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Top 30 Doctor insights on: What Do Prescription Numbers Mean In Eye Glasses 3 doctors agreed: 1  It's a math formula: The prescription tells the lens maker how to shape the lens (glasses, contacts) that will best correct your vision. 2  Yes.: -3.25 would be the power of the contact lens. 3  No: The focusing plane of the glasses is usually 10 to 20 mm in front of the focusing point of your contact lenses.
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What is a PD value? What is a PD value? Great question! Your PD (pupillary distance) measures the distance from the center of one pupil to the other pupil in millimeters. This can equal one number if the left and right side have been added together or two numbers if the left and right side differ. pd value examples: 63 or 31/32.
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How to measure PD or Pupillary Distance However, the PD’s for progressive and bifocal lenses are generally measured in terms of two, two-digit numbers like “63/62.” This means that the general PD is 63 when the eyes are straight forward and 62 when there turned inward at a “close-up” angle such as for reading.
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- You can get a glasses prescription from either an Optometrist or Ophthalmologist. If you already have had an exam, your eye care provider is required by law to release a copy to you. If you need help getting a copy, we would be happy to call your eye care provider for you.ll you need is a copy of your glasses prescription and a valid credit card. Call, chat online, or email one of our Glasses Gurus at 1-800 GLASSES (1-800-452-7737) or info@glasses.com and we will be happy to assist you.
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- 1 This number is called your spherical correction.  Astigmatism –The second number in your prescription identifies what degree of astigmatism you have i.e. how well or poorly your eye focuses light onto the retina. The number can be written either with a (+ sign) or a (- sign).
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How to read my prescription Narrow the PD by 1-2 mm. If the PD of your basic prescription is 29.5/31.0, the PD for computer glasses would be 29.0/30.5 or 28.5/30.0 To convert a multi-focal prescription for single vision reading glasses, simply combine the Add number and the Spherical number.