![]() ![]() Glasses lens replacement has never been easer. If you need any further assistance with this procedure please If your frames do not have any lenses in them at all (prescription lenses, demonstration or dummy lenses) you can place clear tape over the right and left lens opening of the frame as a surface to draw the dots. What is Pupil Distance (or PD for Short) It is the distance in millimeters from the center of the pupil of the right eye to the center of the pupil of the left eye. Dotting the lenses is used for the vertical placement of a progressive, bifocal, trifocal and some single vision lenses and is not considered an accurate PD measurement. Your local optician will usually measure your pupil distance with a high-precision measuring device called a pupillometer. You can ask for this measurement to be shared with you. Pupillary distance ( PD ), more correctly known as interpupillary distance ( IPD) is the distance in millimeters between the centers of each pupil. Pupillary distance measurements are usually taken when you are being fitted for glasses after your eye exam. Be sure to keep your head still while passing the pen from one eye to the other and keep the dot small. Monocular PD can be measured during an eye test. This can be done in front of a mirror or by having another person do it for you. ![]()
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