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Extraocular muscle function testing is an examination of the function of the eye muscles. A doctor observes the movement of the eyes in six specific directions.
Alternative NamesEOM; Extraocular movement; Ocular motility examination
How the test is performedYou are asked to sit or stand with your head erect and a forward gaze. Your health care provider will hold a pen or other object 12 inches in front of your face. He or she will then move the object in several directions and ask you to follow it with your eyes, without moving your head.
How to prepare for the testNo special preparation is necessary for this test.
How the test will feelThe test involves only normal movement of the eyes.
Why the test is performedThis test is performed to evaluate any weakness or other problem in the extraocular muscles, which may result in double vision or rapid, uncontrolled eye movements.
Normal ValuesNormal movement of the eyes in all directions.
What abnormal results meanEye movement disorders may be due to abnormalities of the muscles themselves or problems in the sections of the brain that control these muscles. Your doctor will discuss any abnormalities identified.
What the risks areThere are no risks associated with this test.
Special considerationsSlight nystagmusis normal with an extreme sideways gaze.
ReferencesBaloh RW. Neuro-ophthalmology. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 450.
Extraocular muscle function testing is an examination of the function of the eye muscles. A doctor observes the movement of the eyes in six specific directions.
Alternative NamesEOM; Extraocular movement; Ocular motility examination
How the test is performedYou are asked to sit or stand with your head erect and a forward gaze. Your health care provider will hold a pen or other object 12 inches in front of your face. He or she will then move the object in several directions and ask you to follow it with your eyes, without moving your head.
How to prepare for the testNo special preparation is necessary for this test.
How the test will feelThe test involves only normal movement of the eyes.
Why the test is performedThis test is performed to evaluate any weakness or other problem in the extraocular muscles, which may result in double vision or rapid, uncontrolled eye movements.
Normal ValuesNormal movement of the eyes in all directions.
What abnormal results meanEye movement disorders may be due to abnormalities of the muscles themselves or problems in the sections of the brain that control these muscles. Your doctor will discuss any abnormalities identified.
What the risks areThere are no risks associated with this test.
Special considerationsSlight nystagmusthat stops quickly is normal with an extreme sideways gaze.
ReferencesBaloh RW. Neuro-ophthalmology. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 450.
Lavin PJM. Eye movement disorders: diplopia, nystagmus, and other ocular oscillations. In: Bradley WG, Daroff RB, Fenichel GM, Jankovic J, eds. Bradley: Neurology in Clinical Practice.5th ed. Philadelphia, Pa: Butterworth-Heinemann Elsevier; 2008:chap 16.
Reviewed ByReview Date: 02/16/2011
David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
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What is the function of the lateral rectus muscle?
It is one of six extraocular muscles that controsl the movements of the eye
What is the muscle around the eyes called?
the extraocular
Strabismus can be corrected by injecting Botox into the affected extraocular muscle?
False, intramuscular injections
What procedure is involved in resection of extraocular muscles?
the muscle is detached from the sclera, a piece of muscle is removed so that the muscle is now shorter, and the muscle is reattached to the same place
What moves eyeball medially?
The medial rectus muscle is responsible for moving the eyeball medially by contracting. This muscle is one of the extraocular muscles that control eye movements.
Turns the eye medially?
Eye movements are accomplished by the Extraocular Muscles. The muscle that moves the eye medially is the Medial Rectus.
What is the muscle involved in the rotation of the eye?
The muscle is called an 'extraocular muscle', of which there are 6 - they are relatively small,incredible strong and efficient. They are : medial rectus; superior rectus; superior oblique; lateral rectus; inferior rectus and inferior oblique.
What has the author John Allen Dyer written?
John Allen Dyer has written: 'Atlas of extraocular muscle surgery' -- subject(s): Surgery, Muscles, Eye
What is isokinetic peak-torque?
Isokinetic peak torque refers to the maximum amount of force that a muscle can generate at a constant speed during an isokinetic muscle contraction. It is commonly measured during strength testing to assess muscle function and performance.
For what purposes is eye muscle surgery performed?
to weaken, strengthen, or reposition any of the extraocular muscles (small muscles) located on the surface of the eye that move the eyeball in all directions.
What tissue's major function is to contract?
The muscle tissue's main function is to contract.
What are some examples of circular muscles?
There are some radial muscles that exist in the eye. Radial muscles have a similar structure to that of spokes on a bike, radiating outward from their source. The extraocular muscles of the eyes connect to the eye in several different locations around it to allow movement in different directions according to which extraocular muscle contracts.
