Definition: A device used by eye doctors to measure the size of the pupils. The device consists of a large camera tuned for infrared detection and two infrared side lamps for pupil illumination. A doctor can use an infrared pupillometer to measure the size of the pupils under different amounts of light, such as during daylight and during the night.
Infrared Pupillometer
By Troy Bedinghaus, O.D., About.com
Updated: March 18, 2008
About.com Health's Disease and Condition content is reviewed by Kate Grossman, MD
Pupil measurement
Photo © Troy Bedinghaus
Explore Vision
Must Reads
More from About.com
Work Hard, Travel Easy
The best tips for business travelers.Dog Care
Get tips on training and caring for dogs of all ages.48 Hours in Vegas
Plan a hot weekend in Sin City.Hotel Advice
The must-stay hotels worldwide.
About.com is accredited by the Health On the Net Foundation, which promotes reliable and trusted online health information.Also from About.com:
©2008 About.com, a part of The New York Times Company.
All rights reserved.