infraversion


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Related to infraversion: macrophthalmia

infraversion

 [in″frah-ver´zhun]
1. downward deviation of the eye.
Infraversion of one A or both B eyes. From Dorland's, 2000.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

in·fra·ver·sion

(in'fră-ver'zhŭn),
1. A turning (version) downward.
2. In physiologic optics, rotation of both eyes downward.
3. Synonym(s): infraclusion
Farlex Partner Medical Dictionary © Farlex 2012

in·fra·ver·sion

(in'fră-vĕr'zhŭn)
1. A turning (version) downward.
2. physiologic optics Rotation of both eyes downward.
3. Synonym(s): infraclusion.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

version 

Conjugate movements of the two eyes in the same direction, such as dextroversion, both eyes rotate to the right; laevoversion (levoversion), both eyes rotate to the left; supraversion (sursumversion), both eyes rotate upward; infraversion (deorsumversion), both eyes rotate downward: these versions bring the eyes into the secondary positions of gaze. Movements of the eyes up and to the right are called dextroelevation, up and to the left, laevoelevation, down and to the right, dextrodepression and down and to the left, laevodepression: these versions bring the eye into the tertiary positions of gaze. Version eye movements are performed by yoke muscles (Fig. V2). Syn. conjugate eye movements. See conjugate deviation; cardinal positions of gaze; motility test.
Fig. V2 Version movements of the eyes from A to Benlarge picture
Fig. V2 Version movements of the eyes from A to B
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann

in·fra·ver·sion

(in'fră-vĕr'zhŭn)
1. A turning (version) downward.
2. Synonym(s): infraclusion.
Medical Dictionary for the Dental Professions © Farlex 2012