FREE GROUND SHIPPING on all US web orders over $99! (excluding AK and HI)

215-884-8105 Toll-Free 1-800-659-2250 Fax 215-884-0418

Maddox Phoria Measure

Product Number: 12136

Purchase Gulden’s Maddox Phoria Measure.  This device is designed to measure Anisophoria (the change in the phoria away from the primary position).  Read more below!


The Maddox Phoria Measure is used to measure Anisophoria.  It is constructed from durable plastic.  The large 25mm diameter red Maddox lens is mounted perpendicular to the handle.  Inside the handle is a 10 Diopter rotating prism. A small indicator in the periphery of the disc indicates the effective prism power (ranges from 0D to 10D).