Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
17 Cards in this Set
- Front
- Back
|
What experiments can you do to test the function of the pupil?
|
Direct testing
Indirect testing Swinging Flashing light Accommodation - convergence |
|
|
What can an opthalmoscope give you information about?
|
Optic disc
Retinal blood vessels Macula |
|
|
Describe the visual pathway
|
|
|
|
|
|
|
What are the components to the visual pathway?
|
Retina
Optic nerves Optic chiasma Optic tracts LGN Optic radiations |
|
|
What field of vision is the optic chiasma responsible for?
|
Temporal fields
|
|
|
Where do collateral fibres from the retina pass to activate the light reflex?
|
Midbrain (pretectal nucleus)
Erdinger westphal nucleus Oculumotor |
|
|
What pathologies can interrupt the visual pathway?
|
Pituitary tumour can press on OC from below and interrupt the decussation
Anaplastic astrocytoma = optic radiation |
|
|
Right eye gone
Bitemporal hemianopsia Lateral left medial right |
|
|
Unilateral oculomotor damage
|
|
|
Normal
|
|
|
Unilateral sensory lesion
Optic nerve damage |
|
|
Unilateral damage to both the optic nerve and oculomotor on same side
|
|
|
What three components are there to accommodation reflex?
|
Lens bulging
Pupillary constriction Pupil convergence |
|
|
Outline the pupillary light reflex
|
|
|
|
Aye and again
|
|
|
|
|
