pupillary light reflex is a test for cranial nerve vi involving inspecting the eye and measuring the pupil.
pupillary light reflex is a test for cranial nerve vi involving inspecting the eye and measuring the pupil.
a test for cranial nerve vi involving inspecting the eye and measuring the pupil would be?
pupillary light reflex
Na
Na
nonselective horizontal gaze palsies are caused by lesions in the abducens nucleus. this is where the cranial nerve vi leaves on its way to the lateral rectus muscle, which controls eye movement horizontally away from the midline of the body. the cranial nerve vi also has interneurons connecting to the medial rectus, which controls horizontal eye movement towards from the midline of the body. since the lateral rectus controls movement away from the center of the body, a lesion in the abducens nucleus disrupts the pathways controlling outward movements, not allowing the right eye to move right and the left eye to move left. nerve vi has the longest subarachnoid distance to its target tissue, making it susceptible to lesions. lesions anywhere in the abducens nucleus, cranial nerve vi neurons, or interneurons can affect eye movement towards the side of the lesion. lesions on both sides of the abducens nucleus can cause a total loss of horizontal eye movement.
conjugate gaze palsy