This is the most important measurement to make sure your frames fit your eyes. When measuring this with a metric tape measure, make sure you just measure the lenses -- not the frames. What’s my bridge width? Bridge width is the distance between your two lenses, measured from the innermos...
Your glasses might have numbers on the inside of the temple arm. These refer to the lens width, bridge width, and temple arm length. The most important measurement, frame width, will not be printed on the temple arm. You can measure it yourself using the guide below. ...
How To Measure Your Face for Glasses Not everyone who needs new glasses has an old pair that they can reference for measurements. In these cases, it can be helpful to look at your face (and your face shape) and make some estimations as to what glasses size you might need. But remember...
Get to know the simple steps to measure your pupil distance. Check out Express Glasses for a reliable assistance.
Your eyes should be centered within your lenses. Eyeglass frames that are too wide can make your eyes appear too close together, while narrow frames will give your eyes a wide-set look. To find the lens height and width, measure the widest and tallest parts of the lens. ...
Abbe number is named after the German physicist Ernst Abbe (1840-1905), who defined this useful measure of optical quality. SEE ALSO:How to clean glasses without scratching your lenses Aspheric design In addition to choosing a lens material that has a high index of refraction, another way to...
HOW TO MEASURE What is a single vs dual pupillary distance? Single PD SINGLE PD, or binocular pupillary distance is the standard measurement of the distance from the center of one pupil to the other. Distance PD can be used to order any type of prescription glasses except reading glasses....
measure as everyone is different and these cheap glasses slip and slide around and hang down past the bridge of the nose, not providing any protection. If you don’t try the glasses on before purchasing them, you’ll run the risk of getting an ill fitted pair that can fail to protect ...
Learning how to measure your pupillary distance at home is an important step towards finding your next pair of glasses. Try our free average pupillary distance ruler.
How to Wear Your Eyeglasses How to Clean Your Eyeglasses More FAQs How to Measure Your Pupillary Distance(PD)? PD(or pupillary distance) is the distance between your pupils in millimeter. Your PD is very important for accurately fitting your lenses to achieve vision acurity. In general, th...