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The physiologic basis of the head tilt test was explained by Alfred Bielschowsky and Hofmann [8] in 1935. [9] However, Nagel described it 30 years prior to Bielschowsky when he noted that the combined action of the superior rectus muscle and the superior oblique muscle of one eye and of the inferior rectus and inferior oblique muscles in the fellow eye causes incycloduction and excycloduction ...
The judge did allow a Tennessee Highway Patrol officer on the department's critical response team who responded to the scene to be called as an expert witness. ... Video to be key in DUI case that ...
As the eyes converge, the pupils should constrict. The optokinetic nystagmus test is optional and involves asking the patient to look at a strip of vertical lines moving horizontally across visual field. Nystagmus is normally observed. Extraocular movements are tested by inspecting for ptosis, eye position and nystagmus. The pupil size is ...
The Horizontal Gaze Nystagmus Test, which involves following an object with the eyes (such as a pen) to determine characteristic eye movement reaction. [60] The Walk-and-Turn Test (heel-to-toe in a straight line). This test is designed to measure a person's ability to follow directions and remember a series of steps while dividing attention ...
A duction is an eye movement involving only one eye. [1] There are generally six possible movements depending upon the eye's axis of rotation: Abduction refers to the outward movement of an eye. Adduction refers to the inward movement of an eye; Supraduction / sursumduction / elevation; Infraduction / deorsumduction / depression; Incycloduction ...
The result is a compensatory movement of the eyes. The vestibulo-ocular reflex (VOR) is a reflex that acts to stabilize gaze during head movement, with eye movement due to activation of the vestibular system, it is also known as the cervico-ocular reflex. The reflex acts to stabilize images on the retinas of the eye during head movement. Gaze ...
Electronystagmography (ENG) is a diagnostic test to record involuntary movements of the eye caused by a condition known as nystagmus. It can also be used to diagnose the cause of vertigo, dizziness or balance dysfunction by testing the vestibular system. [1] Electronystagmography is used to assess voluntary and involuntary eye movements. [2]
An example of eye movement over a photograph over the span of just two seconds. Eye movement includes the voluntary or involuntary movement of the eyes. Eye movements are used by a number of organisms (e.g. primates, rodents, flies, birds, fish, cats, crabs, octopus) to fixate, inspect and track visual objects of interests.