Vision - Muscles and Neural Pathways Flashcards Preview

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Flashcards in Vision - Muscles and Neural Pathways Deck (35)
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31

Through what pathway does light travel once it hits the retina?

Optic nerve, optic chiasma, optic tract

32

What are the causes of pupil abnormalities?

Horner's syndrome
Abnormal light reflex

33

What is the pathway of the efferent limb?

Preganglionic parasympathetic past to the orbit
Parasympathetic fibres go to and synapse in ciliary ganglion
Postganglionic fibres go through short ciliary nerves o constrictor papillae

34

What are the common causes of absent/abnormal pupillary reflex?

Detachement, degeneration or dystrophy of retina
Optic neuritis
Disease of the 3rd cranial nerve

35

What are the clinical signs of Horner's syndrome?

Ptosis
Anhidrosis
Anisocoria