![]() The image should be far enough away so we can check your head is in a natural position. Take a picture of yourself wearing the glasses you want glazing so we can validate the image for Pupil Distance.Įnsuring your eyes are open and you are looking straight at the camera, don’t look up or down, or to the left or the right – straight ahead only. If you don’t feel confident to do this yourself, we can help you.īefore posting your frames to us in your pre-paid postage box: The same rules apply, just make sure you are out of eyeline with the person you are measuring so as not to skew the measurement, children are particularly tempted to look at you instead! Where possible, have them look ahead to 10-20ft distance away and looking dead centre, with the ruler flat to their forehead. As mentioned, do this 3-4 times to get a consistent result and your set to complete your order. Making sure the ruler is flat to the forehead and looking straight ahead, line up the 0mm mark with the centre of one pupil, then measure to the centre of the other. If you don’t fancy downloading more apps, however, you can easily measure yourself simply with a ruler or metal tape measure. There are several apps and tools online you can use on your smartphone or tablet to get your measurement. But if they do refuse, you can absolutely do it yourself. Some opticians however may either charge you for this information or refuse to provide it, potentially to keep glasses purchases in store. You know the funny glasses they put on you? That’s how they measure your pupillary distance, amongst other things. If you are due to have an eye test, then you can request this information from your optometrist at the time of examination to add to your prescription. ![]() How to measure your pupillary distance At the opticians Note also that if you have a particularly strong prescription, don’t rely solely on the average as a guesstimate, as an incorrect measurement can result in headaches, eye strain and further vision degradation. If you only take one and it’s a few millimeters out, the optical centre of your lenses will be off and your lenses won’t work effectively. Take the measurement a few times when you are measuring yours or someone else’s to be sure you have a consistent result. The average pupillary distance is between 54-74mm for adults and 43-58mm for children. If you are wearing varifocal lenses, for example, the measurement is required so that the lens is designed correctly when factoring in its multifunctional purpose. Looking straight ahead, it’s a simple measurement that is crucial to ensure your lenses are their most effective, with the optical centre in the correct place as that is where our eyes naturally sit for most of the day. ![]() Pupillary distance is measured in mm from the centre of the pupil straight across to the other eye’s pupil centre. As every person’s face shape, eye placement and prescription needs are individual to them, it is vital that the measurement is taken correctly to ensure the lenses work in the correct way for the wearer. The Pupillary Distance also varies in size when you’re looking at long distance or close objects (long-sighted or short-sighted) and so the measurement plays a key part in the makeup of the lens. The measurement is unique to every person and it determines the optimum placement of vision in prescription lenses. Pupillary distance is the measurement taken in mm between the centre of your pupils. ![]()
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