PD is short for pupillary distance. This is the distance in millimeters between the pupils of the eyes. This measurement is required to correctly position your lenses. Check your previous eyewear receipts or …

Pupillary Distance (P.D.) is the distance measured in millimeters between the centers of the pupils of the eyes. This measurement is different from person to person, and depends on whether they are …

The parasympathetic pupillary pathway consists of both an afferent (moving from the eye to the brain) and an efferent (moving from the brain back to the eye) pathway.

• Monocular PD is the measurement in mm from the center of one pupil to the center ofyour nose bridge. This will give you two readings, one for the Right Eye and one for the Left Eye. It is most accurate to …

Pupillary Distance (PD) is the distance, in millimeters, between the center of one pupil to the center of the other. The PD is needed to manufacture your eyeglasses because it determines the exact optical …

Description Pupillary light response is checked as a light is briefly flashed into the eye.

Pupillary Distance (PD) is the measurement from the center of one pupil to the center of the other. PD is used to determine where you look through the lens of your glasses and should be as accurate as …