The Pupil Gauge, the world's premier Pupilometer 2024, is meticulously designed by Neuro-Ophthalmologists. This state-of-the-art 4-in-1 Pupil Gauge offers precise sizing from 1 to 10 mm, accompanied by a versatile set of features including a ruler, pinhole, and red testing for unparalleled accuracy in pupil measurements. http://pupilgauge.com