![]() Using your free PD ruler, you can easily measure your dual pupillary distance using the V slot for your nose. Make things easy for yourself and avoid getting the wrong pupillary distance. This imbalance is perfectly normal and means that the optical centres of your new lenses will need to be slightly different. It’s common for dual PD's to vary slightly due to facial asymmetry. If you have two different numbers for your dual PD, you're not alone. These measurements are required for high strength or progressive prescriptions lenses, usually more than +/- 4.00. These separate measurements are taken for each of your eyes.ĭual PD is also referred to as mono or binocular PD measurements. This measurement is generally required for lesser prescription such as single vision, prescription reading glasses or computer glasses.ĭual PD is the distance from the centre of your pupil to the middle of your head. Single PD is the total distance between your pupils. ![]() Instead, we’ve written a handy guide on how to measure pupillary distance using old glasses.Ĭlick here to for other methods on how to measure your PD. PD (Pupillary Distance) PD is the distance measured in millimeters (mm) between the centers of each pupil, and is used to make prescription eyeglasses. If you don't want to sign up for your free PD ruler, that's toally cool. Instead, we recommend you use our online PD meter download via the link below. Especially with one eye closed, looking in the mirror to read millimetre increments. Holding it still against your face can be a little tricky. 2 Have your friend stand approximately 8 inches away or more. Ensure its scaled properly by comparing your Drivers License against the key. Sure you can, but it’s more difficult to use. 1 Print our tip sheet, which includes a special ruler to measure your PD. Order your new glasses on our website and leave the PD section blank. But if you’re buying glasses online and don’t already know your PD, you can use our online PD ruler to measure your PD yourself it’s super easy Step 1. This is perfect for measuring both your single or dual PD measurements without having to request it from your optician. Your Pupillary Distance (PD) is the distance between the centres of your pupils. Using millimetre increments, your free PD ruler lets you measure the precise distance between your pupils. This measurement is used to determine where you look through the lens of. ![]() This little slot makes it super easy to find the middle of your face. PUPILLARY DISTANCE (PD) measures the distance between the centers of your pupils. Just like a pair of glasses, there’s a handy V shaped slot that mimics how your glasses rest on your face. It’s downloadable, easy to make and gives an accurate measurement.Ī PD ruler is just like a regular ruler that’s been modified to locate on your nose. These are two different ways to measure your PD.Ī SINGLE PD would be provided by one number and is the measurement of the center of one pupil to the center of the other.Ī DUAL PD would be provided with two numbers and would appear and is the measurement of each pupil center to the center of the bridge of the nose, in millimetres.ĭual PD appears in the following format: "27/29".To avoid any awkward confrontation, you can measure your PD yourself using our free PD ruler. If you are ordering a BiFocal or Progressive lens, even a couple of millimetres off can greatly affect how you see through your lenses Inter pupillary distance tends to be asymmetrical. If you have a high prescription and the wrong PD these symptoms can often be much worse. Use a Mirror (accurate but you need a ruler) With a ruler and a mirror you can easily measure your IPD. At a minimum the wrong PD can feel like something is wrong with your glasses, but it can also induce eye strain, fatigue, headaches and blurry vision. Your PD should always be measured and not estimated. An average range of a child’s PD is between 43 and 58 mm. To download a printable ruler, click here.Īn average range of adult PDs is between 54 and 74 mm. This measurement is different from person. If your eye doctor won't provide you your PD, don't worry! This short video tells you how you can easily measure your PD at home.Īll you need is a friend or a mirror and a ruler. Pupillary Distance (P.D.) is the distance measured in millimeters between the centers of the pupils of the eyes. A pupil distance meter is a device used to measure the distance between a persons pupils before they are fitted with glasses, in order to ensure the lenses.
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