The "noa" multi-circle pupillometer
Nozaki, H.; Okamoto, T.; Awaya, S.
Nippon Ganka Gakkai Zasshi 84(4): 321-325
1980
ISSN/ISBN: 0029-0203 PMID: 7395665 Document Number: 167083
An NOA pupillometer consisting of 3 clear polymethyl methacrylate resin measures with a 16 diopter magnifying lens, on which yellow circles of various sizes are printed for direct comparison with the human subjects pupil, was designed. Each of the measures is 26 mm in width, 24 cm in length and 2 mm in thickness. Circles are aligned on the 1st measure from a diameter of 1-3.6 mm, on the 2nd from 3.8-6.0 mm and on the 3rd from 6.2-8.0 mm with an interval of 0.2 mm in diameter, respectively. The mm rulers printed in the center and on the left margin of the pupillometer can measure the corneal diameter and the width of palpebral fissure, respectively. The lens is designed for magnifying the surface of the cornea and iris and magnifying pupillary movements.