The app will display a target in the center of the screen. To use the app, simply put on the Oculus Quest headset and launch the app. While the Oculus PD Check app is not as accurate as a professional measurement, it can still provide a good estimate of PD. The Oculus PD Check is an app that uses the front-facing camera of the Oculus Quest virtual reality headset to measure PD. Many people are interested in measuring their own PD, either for general curiosity, or in order to save money by ordering eyeglasses or contacts online. It is used to help eyeglass and contact lens prescribers determine the correct positioning of optical devices in front of the eyes. ![]() ![]() To calculate a near dual PD, subtract 1.5mm from each of the two measurements.Pupillary distance (PD) is the distance in millimeters between the centers of the pupils of the eyes. In order to arrive at your near PD measurement, you need to subtract 3mm from the regular PD measurement (known as a distance PD). So when you are calculating the distance between your pupils for the purposes of reading glasses (a measurement known as near PD), you need to adjust the figures. If you are looking at an object close up-for example, when you’re reading-your pupils tend to move closer together. How do you calculate near PD for reading glasses? Then your friend should read the measurement that lines up with the centre of your right pupil.Without moving the ruler, they must then open their left eye and close their right eye.Your friend should close their left eye and then use their right eye to line up the centre of your left pupil with the 0 mark on the ruler.Your friend should sit at the same level as you and hold a millimetre ruler across the bridge of your nose (making sure the measurement markings on the ruler are on the side closest to your eyes).Don’t feel like you can get an accurate reading by measuring yourself? Here’s how a friend can measure your PD. This measurement works out the same as from the middle of one pupil to the other. If you’re having trouble deciding where the centre of the pupil is, you can measure from the far-left edge of the iris (the coloured circle around the pupil) of one eye to the far-left edge of the iris of the other. Now read the millimetre measurement that lines up with the centre of your right pupil.Without moving the ruler, close your left eye and open your right one.Line up the 0 mark of the ruler with the centre of your left pupil and keep your head still.Lay the ruler flat horizontally across the mirror in front of you and close your right eye. ![]()
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