1. California State Society for Opticians January 15, 2017
Measurements
California State Society for Opticians
January 15, 2017

2. Pupillary Distance Measurements: Pupilometer
Take Monocular PD Measurements
Take Binocular PD Measurements
PD Stick

3. Clean the area around the eyes.
Ask the patient to hold the pupilometer with both hands
Tell them they will see a light.
As you gaze into the pupilometer move the levers to line up with the patient’s pupils.
Both: Binocular and Monocular measurements will display.
The middle number is the Binocular PD.
The Right & Left are the Monocular PD.

4. Taking Binocular PD Measurements with a PD Stick
Measured from outer of the eye to the inner side of the other eye. This method helps with dark eyes and pupil is not visible.
Measured from pupil to pupil using a pen light to light up pupils.

5. Taking Monocular PD Measurements with a PD Stick
When we do not have a pupilometer
we may use PD sticks to take the same
measurements.

6. Practice with Pupilometer & PD Stick
Measure with Pupilometer
Measure with PD Stick
Binocular PD
Monocular PD

7. Taking Measurements for Lenses
Progressive Lenses: There is no visible line, and the patient see all ranges:
Distance – Mid-Range – Reading
Bi-focal Lenses: There is a visible line, and the patient see two ranges:
Distance and Reading – Not Mid-Range
Tri-Focal Lenses: There are two visible lines, and patient see three ranges:
Single Lenses: The lens has no visible lines, and the patient see one range:
Could be for Distance, Computer, or Reading

9. Practice Measurements for Lenses
Progressive
Bi-Focal
Tri-Focal
Single Vision

10. Extra Work
Practice taking PD Measurements