HOW TO MEASURE THE PUPILLARY DISTANCE?
The pupillary or interpupillary distance is the distance in millimeters between the pupils of both eyes at a certain viewing distance....
» HOW TO MEASURE THE PUPILLARY DISTANCE?
The pupillary or interpupillary distance is the distance in millimeters between the pupils of both eyes at a certain viewing distance (looking closely or away) Example: DP Near: 57, DP Far: 59 (mm). Sometimes it is marked with two values, one for each eye (example: DP Near: 28/29), This distance is very important when ordering your lenses. Knowing the pupillary distance your lenses will be centered on your frame by matching the optical center of the lens with the visual axis of your eyes.
The pupillary distance is usually found in the glasses prescription, but not always. If you do not know your pupillary distance and / or is not included in your prescription, you have several options:
❶You can ask the professional that give you the prescription.
❷ You can use our virtual meter and follow the instructions (Method 1)
❸ You can use the conventional method to measure pupillary distance and take a photo. You just need a digital camera and a millimeter ruler and someone to take the picture of you. (Method 2).
» METHOD 1: Virtual Meter «
For the virtual meter you need a computer with a front camera, and any with the SAME size of a credit card (85.60 mm). Instructions:
1) Click here to open the pupil distance meter program and follow the instructions.
2) Click on "start measurement"
3) Click "allow" or "allow" access to the camera of the pc or tablet if the camera does not connect automatically
4) It is advisable to take the photo in a bright place so that the image is clearer. Focus the face on the red hair that appears on the screen
5) You must be with the face completely right and you must put the card or card under your nose touching your face. Take the photo
6) If the image is very small, move the zoom to the right to enlarge it slightly before moving the mark points
8) Center the hair cross in each pupil and the vertical line in the middle of the nose. The nasopupillary distances and the pupillary distance will appear. Insert these data into the corresponding fields in the prescription module. The annotation is made as follows:
In the example the pupillary distance is 59.7 mm. If the photo was taken looking at the camera or at a distance between 30 and 50 cm, the measurement corresponds to the near pupil distance. If the person is looking at a distant point at the time of taking the photo, then this distance corresponds to the pupil distance from afar. In the example, the person is looking at a nearby point. The annotation is done in the Pupil Distance (DP) field. Near: 59.7 The nasopupilar distance in the example is: Nasopupilar Distance (DNP) Near: OD: 29.9 OI: 29.8
» METHOD 2: By photo «
To measure DP per photo: You need a digital camera with good resolution and a millimeter ruler. It will be easier if you ask someone to help you. This photo should be exclusively a photo of your eyes, as you see in the figures.
1) You must put the ruler under your eyes, or resting it on your eyebrows.
DP-regla 2) You should be sitting and looking straight ahead at a fixed point, located 2 or more meters and without looking at the camera. You can see a point on the wall, a detail of a picture, etc., etc.
3) The person who takes the photo should be at least 50 cm away, using the camera zoom so that only your eyes pop out. The camera (not the person) should be in front of your eyes without covering your fixation point.
4) You must hold the straight rule horizontally and under your eyes or supporting it above your eyebrows.
5) It is advisable to use the flash so that the reflection appears in the center of your pupils..
6) Once the photo is taken you can send it by email (firstname.lastname@example.org), or by WhatsApp +57 3205036911. It is very important that you follow the instructions so that the measurement is correct.