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Accommodation reflex

Definition of the noun accommodation reflex

What does accommodation reflex mean as a name of something?

noun

  1. reflex changes in the eyes that enable an object to be focused on the retina

Explanation

The accommodation reflex is a reflex action of the eye, in response to focusing on a near object, then looking at distant object, comprising coordinated changes in vergence, lens shape and pupil size. It is dependent on cranial nerve II, superior centers and cranial nerve III.The change in the shape of the lens is controlled by the cilliary muscles inside the eye. Changes in contraction of the ciliary muscles alter the focal distance of the eye, causing nearer or farther images to come into focus on the retina; this process is known as accommodation. The reflex, controlled by the parasympathetic nervous system, involves three responses; pupil accommodation, lens accommodation, and convergence.

Printed dictionaries and other books with definitions for Accommodation reflex

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Google previewThe American Encyclopedia and Dictionary of Ophthalmology (1915)

the relaxed accommodation reflex; (4) the sensory reflex, and (5 ) the psychic reflex. Ball has also described very clearly the methods for eliciting each ...

Google previewOculo-refractive Cyclopedia and Dictionary (1921)

by Thomas George Atkinson

In certain nervous diseases, notably locomotor ataxia, the light reflex is abolished while the accommodation reflex remains intact; so that the pupil fails to contract in response to light, but contracts during accommodation. Such a condition is ...

Google previewA Dictionary of Neurological Signs (2016)

by A.J. Larner

A Accommodation Reflex • Secondary: In the context of other cognitive impairments, for example of language (aphasia, alexia or agraphia for numbers), attention, memory, or space perception (e.g. neglect). Acalculia may occur in association ...

Google previewMosby's Medical Dictionary (2013)

by Mosby

accessory pancreatic duct accommodation reflex Evaluating the accessory nerve (Swartz, 2009) pancreas and sometimes found in the wall of the stomach or intestines. accessory pancreatic duct, the small duct that branches from the ...

Google previewMosby's Dictionary of Medicine, Nursing & Health Professions (2012)

by Mosby, Inc

accessory pancreatic duct accommodation reflex Evaluating the accessory nerve (Swartz, 2009) pancreas and sometimes found in the wall of the stomach or intestines. accessory pancreatic duct, the small duct that branches from the ...

Google previewChurchill Livingstone Medical Dictionary (2008)

by Chris Brooker

Examples include abdominal reflex, accommodation reflex, anal reflex, asymmetric tonic neck reflex, conditioned reflex, corneal reflex, cough ...

Google previewMosby's Dictionary of Medicine, Nursing and Health Professions - Australian & New Zealand Edition (2014)

by Peter Harris, Sue Nagy, Nicholas Vardaxis

See also accommodation reflex. 4. (in sociology) the reciprocal reconciliation of conflicts between individuals or groups concerning habits and customs, usually through a process of compromise, arbitration or negotiation. Also called ...

Google previewThe Encyclopedia of the Muscle and Skeletal Systems and Disorders (2005)

by Mary Harwell Sayler

For example, flashing a bright light in the eyes causes the pupils to contract in an accommodation reflex that enables the person's vision to adapt while protecting the eyes from glare. A sneeze reflex clears the sinuses, and a cough reflex ...

Google previewConcise Colour Medical Dictionary (2015)

by Elizabeth Martin

accommodation reflex (convergence reflex) a reflex that occurs ...

Google previewConcise Medical Dictionary (2015)

by Elizabeth Martin

accommodation reflex (convergence reflex) a reflex that ...

Google previewBantam Medical Dictionary, Fifth Edition (2009)

by Laurence Urdang

accommodation reflex (convergence reflex) the constriction of the pupils and inward turning of ...

Google previewChurchill Livingstone Pocket Radiography and Medical Imaging Dictionary (2007)

by Chris Gunn

See also accommodation reflex, conditioned reflex, corneal reflex.

Google previewCampbell's Psychiatric Dictionary (2009)

by Robert Jean Campbell

Absolute accommodation is the accommodation of either eye separately; binocular accommodation is like accommodation in both eyes in coordination with convergence (the accommodation reflex). Accommodation occurs on shift of far to ...

Google previewDICTIONARY OF MEDICAL TERMS,6th ed. (2012)

accommodation reflex N. reflex consisting of ...

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