11300 Pupil Disorders Terms and Definitions at www.MedicalGlossary.org

Home > Diseases > Nervous System Diseases > Neurologic Manifestations > Pupil Disorders Terms and Definitions

Pupil Disorders

Definition: Conditions which affect the structure or function of the pupil of the eye, including disorders of innervation to the pupillary constrictor or dilator muscles, and disorders of pupillary reflexes.
Notes: see also IRIS DISORDERS
Also Called: Pupillary Functions, Abnormal,Pupillary Paralysis,Deformed Pupil,Efferent Pupillary Defect,Keyhole Pupil,Occluded Pupils,Pupil Reaction Absent,Wernicke Hemianopic Pupil,Pupillary Sphincter Rupture,Pupil Malformations,Non-Syphilitic Argyll-Robertson Pupil,Fixed Pupils,Ectopic Pupil,Afferent Pupillary Defect,Pupillary Sector Paralysis
Previously Indexed: Pupil (1967-1989),specific eye disease (1969-1989)

Pupil Disorders Categories.
Anisocoria - Unequal pupil size, which may represent a benign physiologic variant or a manifestion of disease. Pathologic anisocoria reflects an abnormality in the musculature of the iris (IRIS DISEASES) or in the parasympathetic or sympathetic pathways that innervate the pupil. Physiologic anisocoria refers to an asymmetry of pupil diameter, usually less than 2mm, that is not associated with disease.
Miosis - Pupillary constriction. This may result from congenital absence of the dilatator pupillary muscle, defective sympathetic innervation, or irritation of the CONJUNCTIVA or CORNEA.
Tonic Pupil - A pupillary abnormality characterized by a poor pupillary light reaction, reduced accommodation, iris sector palsies, an enhanced pupillary response to near effort that results in a prolonged, "tonic" constriction, and slow pupillary redilation. This condition is associated with injury to the postganglionic parasympathetic innervation to the pupil. (From Miller et al., Clinical Neuro-Ophthalmology, 4th ed, pp492-500)

Pupil Disorders Definitions and Terms

MedicalGlossary.org is designed as a free, browsable resource for all. The medical terms and definitions are not intended to replace medical informaion provided by licensed healthcare professionals. Please see a doctor if you need medical assistance. Don't see the medical term you were researching?  Send us an e-mail from our "about us" page.  We will do our best to research and classify new medical terms in a timely manner. Our current list of medical terms is over 26,000. Data sources include the U.S. National Library of Medicine, 2004 Medical Subject Headings.

Copyright 2004 

Main Categories:
Anatomy
Organisms
Diseases
Chemicals and Drugs
Analytical, Diagnostic and Therapeutic Techniques and Equipment
Psychiatry and Psychology
Biological Sciences
Physical Sciences
Anthropology, Education, Sociology and Social Phenomena
Technology and Food and Beverages
Humanities
Information Science Persons
Health Care
Geographic Locations