perioptometry

perioptometry

 [per″e-op-tom´ĕ-tre]
measurement of acuity of peripheral vision or of the limits of the visual field.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

perioptometry 

The measurement of the extent of the visual field or of peripheral visual acuity.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann