review part 2 (test 3) Flashcards
Where are high frequencies processed in the cochlea? Low frequencies?
High = close to the oval window
low = towards the end of the spiral
What drugs kill hair cells in the cochlea? Do loud noises kill hair cells?
gentamycin and cisplatin
yes
define presbycusis
hearing loss caused by aging
Could this vestibular schwannoma affect cranial nerves V, VII, and VIII?
yeah
Put this shit in order:
- Canal of schlemm
- Ciliary epithelium
- Posterior chamber
- Anterior chamber
- Trabecular meshwork
- Episcleral veins
Ciliary epithelium –> Posterior chamber –> Anterior chamber –> Trabecular meshwork –> Canal of schlemm –> Episcleral veins
What are the 2 types of glaucoma?
open angle
closed angle
In glaucoma, can patients detect the slow decline of vision loss?
no
Glaucoma has an insidious progression of vision lost that is NOT detected by the patient until it has become pretty severe
This patient has glaucoma. How can you tell?
Increased intraocular pressure causes damage to the optic nerve which results in cupping (the cup gets bigger)
Is acute angle glaucoma painful?
you bet
define amblyopia
unilateral (usually) reduction of best corrected vision not attributed to structural abnormality of eye or posterior visual pathway
define anisometropia
Unequal refractive error in the two eyes causes the image on one retina to be chronically defocused
What are the 2 types of macular degeneration?
dry (drusen)
wet (neovascularization)
What is going on here?
macular degeneration
What are the 2 types of diabetic neuropathies?
non-proliferative (microaneurysms)
proliferative (neovascularization of the central retinal artery)
a patient has right-sided vision loss with jaw pain. What does this guy have?
giant cell arteritis
