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Ocular A& P #8 Final

Terms- Covering Visual Fields and Nervous System

TermDefinition
Lateral Geniculate Body The processing center for visual information in the mid-brain and the visual processing center for V1.
Optic Track The axons of the ganglion cells. It runs from chiasma to lateral geniculate.
Optic Radiations In the temporal lobe and runs from the lateral geniculate body (LGB) to the occipital lobe.
Optic Nerve The axons of the ganglion cells and runs from the globe to the chiasma.
Optic Chiasma The axons of the ganglion cells, the fibers cross next to the Pituitary, and the visual field (VF) defect will be on both temporal areas.
Nerve Fiber Layer The Axons of the ganglion cells and runs in an arcuate pattern
Efferent Fibers Runs from the CNS to the organ (eye)
Afferent Fibers Runs from the organ (eye) to the CNS
Pupillomotor Fibers Separates the fibers in the optic nerve and leaves the optic track before the lat geniculate.
Meyers Loop In the temporal lobe.
Ipsilateral Same side
Contralateral Opposite side
Congruous VF defect is exactly the same for both VF and is an occipital lobe defect
Incongruous VF defects is not exactly the same OU (both eyes) VF and is located in the temporal lobe.
Physiological Blind Spot 15 degrees temporal to the central spot visual field.
Ceco-Central Scotoma A central and paracentral VF defect and is an early VF defect in glaucoma.
Trigeminal Nerve The sensory (V C.N.) to the eye, upper face, and tip of nose.
Facial Nerve The motor nerve to the orbicularis. (VII C.N.)
Oculomotor Nerve The nerve (III C.N.) to the medial, superior, and inferior rectus muscles and the levator palpebrae muscle. Efferent pupillomotor fibers are carried in the nerve.
Abducens Nerve A slow light, accommodation, consensual reflex (VI C.N.)
Trochlear Nerve The nerve to the superior oblique muscles (IV C.N.)
Sympathetic Innervation The superior palpebral M. (Meuller)
Ophthalmic Nerve Sensory to the the eye, upper face, and tip of nose. (V1)
Head Tilt Test Called the Bielchowski, it tests for S.O palsy.
Parasympathetic N.S. Efferent Pupillomotor fibers carried in the nerve
Pupillomotor Fibers Afferent fibers that leave the optic track before the LGB.
Anisocoria Difference in pupil size
Lagophthalmos Inability to close lid
Neurotrophic Cornea Loss of sensation to the cornea
Created by: Leequa