Make Sure You Know This About Pupillary Distance
Assessing your PD:
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 encourages patients to buy their spectacles from them whereas you can buy cheap spectacles online or designer glasses at a fraction of the price online. It is normally noted as 1 measure like 60 (60mm) but can also be presented as R 29 L 31. When written like this it is the individual space from your right and left pupils to the center of your nose.
When Varifocals, High Prescriptions or Prisms are ordered the measure is commonly split individually. On the whole, if you have a single vision prescription, it will be written down as one value.
If you do not know this measurement and don’t want to measure it yourself then most online opticians will make your PD the national average (63) for men and (60) for women.
You can ask a friend or family member to calculate your PD for you:
This is the easiest method for measuring you PD. Get your friend to sit directly opposite you and at the same height as you and ask them to put a ruler against your forehead and just above your eyes.
Next ask your friend to close their right eye and you then look directly into their left eye. Request your friend to slide the rule so that the zero value is in the centre of your right pupil and to sustain the rule very steady across your brow. So, now look straight into your friends right eye with them closing their left eye.
Your friend will then read off the measurement to the centre of your left pupil. And that’s it! It really is that easy! Please see the diagram below to help you further.
Use your current spectacles to measure your PD with the aid of an assistant:
Check how well your eyeglasses sit on your face by putting them on and having a look. Call For your mate to stand opposite you and verify on your lenses the position of your pupils with a non lasting marker.
You should now see two lines directly infront of you whilst wearing your spectacles. Simply, remove your specs and measure the distance between the two markings. And that is it! If the ruler shows 6 cm then your pupillary distance will be termed as 60. If the measurement is 6.3cm then your PD will be 63.
If you have a varifocal measurement, then just measure across from your right eye to the centre of your nose and then again from the centre of your nose to your left eye and record the individual readings for both your left and right eyes. If you aren’t buying sunglasses with prescription lenses in then don’t worry about what’s in this article.
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Tags: eye glasses, spectacles, vision
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