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Eye movement, or induction, is important in ophthalmology and can indicate neurological damage or physical incapacity if limited. There are six different eye movements, including abduction and adduction, which create binocular vision. Uncoordinated induction or inability to move the eye can be a symptom of a serious problem, and a forced reduction test can determine if it is neurological or physical.
In ophthalmological practice, movement of one eye is known as induction. Induction occurs naturally, and most people have a range of six different eye movements along the eye’s axis of rotation. When these eye movements are not possible, it could be a sign of neurological damage or physical incapacity.
Eye movement depends on the eye’s current position on its axis of rotation and the coordination of the six extraocular muscles. The six eye movements are abduction, adduction, supraduction, infraduction, incycloduction, and excycloduction. The eyes could naturally perform any of these movements, and usually do so in coordination with each other, thus creating binocular vision. When the eyes work independently of each other, it creates convergence, which can cause vision problems caused by reduction. These vision problems are commonly known as lazy eye, double vision or crossed eyes.
When the reduction is noted during an eye examination, medical terminology is used that may confuse the patient. For the sake of clarity, “abduction” means that the eye’s pupil moves toward the temple, commonly known as having a lazy eye, and “adduction” means that the pupil gravitates toward the nose in an induction commonly known as having lazy eyes. cross . In overduction, the pupil of the eye is elevated and infraduction causes the pupil to look down. “Incycloduction” and “excycloduction” refer to eye movements in or out of the body. Cycloduction commonly causes diplopia, also known as double vision.
Uncoordinated induction between the eyes or an inability to move the eye in any of the six inductions can be a symptom of a serious problem. In these cases, your ophthalmologist may choose to perform a force narrowing test as part of your eye exam. The purpose of the forced reduction test is to determine if the problem is a neurological disorder or if the lack of movement is caused by a physical problem.
The forced reduction test is performed by attempting to move the eyeball in the direction of limited movement. The ophthalmologist performs this movement by anesthetizing the conjunctiva, holding it with forceps and simulating the natural movement of the extraocular muscles. If movement is induced in this way, it can be assumed that the problem is a result of neurological damage and not a physical inability to move the eye.
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