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;
30 Cards in this Set
- Front
- Back
|
What are some possible causes of transient monocular vision loss?
|
Ischema to the retina, optic nerve
|
|
|
What are some local causes of transient monocular vision loss? Remote?
|
Local:
Papilledema Impending occlusion Remote: Cervical carotic artery stenosis Systemic hypotension |
|
|
What is a hellenhorst plaque? Where does it come from? What does it look like?
|
It's just a plaque in the retinal artery
It most likely is coming from the cervical carotid artery |
|
|
What are some causes of transient binocular vision loss?
|
1. Migraine
2. TIA 3. Seizures |
|
|
An infarction of what arteries could cause visual symptoms?
|
Basilar artery
Posterior cerebral artery MIddle cerebral artery |
|
|
What are some possible causes of acute persistent visual loss?
|
Vitreous hemorrhage
Retinal detachment Retinal hemorrhage Retinal infection Retinal artery occlusion Ischemic optic neuropathy Optic neuritis Optic nerve/chiasm compression or infiltration by a tumor Occipital lobe infarction FAKING |
|
|
What does the retina look like in vitreous hemorrhage?
|
|
|
|
What are some causes of vitreous hemorrhage?
|
DM
Trauma HTN Sudden increase in ICP |
|
|
What does the retina look like if it's detached?
|
All blurry/fuzzy
|
|
|
What does the eye look like if you've got macular hemorrhage?
|
Different kinds of hemorrhage in the eye
|
|
|
What is the difference between surface and submacular hemorrhage?
|
Surface: splotchy
Submacular: more demarcated borders |
|
|
What does the eye look like in macular infection?
|
Blurry
|
|
|
What does the eye look like in a retinal artery occlusion?
|
Whitening of the retina: ischemia
Center of the fovea is very red: cherry red spot |
|
|
What does the eye look like if there's a retinal vein occlusion?
|
Wavy red lines all across the surface of the retina
|
|
|
What is the cause of a retinal vein occlusion?
|
Thrombus
|
|
|
What's the most common cause of retinal vein occlusion?
|
A slowing of flow through the blood through the retinal artery-->stasis-->clotting
|
|
|
What are causes of monocular flashes?
|
Vitreoretinal traction
Impending retinal vascular occlusion |
|
|
What are causes of binocular flashes?
|
Migraine
Occipital lobe ischemia Occipital lobe seizure |
|
|
What are causes of floaters?
|
THE VITREOUS:
Aging or myopia Detachment Hemorrhage INflammation |
|
|
Are myopes or hyperopes more prone to floaters?
|
Floaters
|
|
|
What are causes of abnormal tearing?
|
Poor drainage
Inflamed anterior ocular segment |
|
|
What is anisocoria?
|
Aniso: unequal
Coria: pupil |
|
|
What are causes of isolated anisocoria with normal constriction?
|
It's physiologic
|
|
|
What do you think if there's isolated anisocoria and one pupil doesn't constrict normally?
|
Iris trauma
Inflammation or ciliary ganglion/nerve lesion |
|
|
If there's ptosis on the side of a smaller pupil and both constrict normally, what do you think?
|
Horner's
|
|
|
If there's ptosis on the side of a larger pupil and that pupil doesn't constrict normally, what do you think?
|
3rd CN palsy
|
|
|
What two muscles are responsible fro elevating the superior palabra? What is the innervation?
|
Levator palabrae superior: PNS
Mueller's muscle: SNS |
|
|
What are some causes of ptosis?
|
Wearing out of the levator tendon
Trauma Mass/inflamation Myasthenia gravis Horner's CNIII palsy |
|
|
What is proptosis?
|
The bulging of the eye from the orbit
|
|
|
What are some possible causes of hallucinations and illusions?
|
Ocular
Occipital Medicinal Encephalopathic Psychotic |
