Purchase the Digital Pupilometer from Gulden. This Pupilometer will not only measure the PD, but you can also set the patient's fixation distance with a lever that moves a pair of prisms inside the device. It is powered by AA batteries.
Sorry, this item is currently out of stock.
Measures pupil size and PD. The measuring range is 46mm to 82mm. Includes automatic standby after 2 minutes of non-use to preserve battery life. This lightweight unit is powered by 4 AA batteries (not included).