phoro-optometer

phoro-optometer

 [for″o-op-tom´ĕ-ter]
an instrument to test ocular ductions, phorias, refractions, and vergences.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.