Have you ever heard a mom tell her child not to wear someone else's glasses because it will ruin his eyes? This common belief comes from the thought that straining to see out of a wrong prescription c..

Measuring your pupillary distance: This measurement is the distance between the centre of your pupils that is measured in millimetres. Opticians do not tend to give out this measurement as it encour..

This is the distance glasses between the center of one pupil to the center of the other pupil measured in millimeters. Usually written as one value (60mm) but sometimes written as 34/33 if one eye is ..