Glaucoma Flashcards
what are the pertinent structures involved with glaucoma
ciliary body
iridocorneal angle
retina
optic nerve
what are the 3 basic procedures that need to be done when diagnosing glaucoma
tonometry gonioscopy (exams the iridocorneal angle and opening of cliliary cleft) ophthalmoscopy
primary vs secondary glaucoma
- primary (open, closed, or congenital): develops without other ocular dz
- secondary (inflammatory or mechanical/ neoplastic): develops with some other ocular dz
primary open angle glaucoma
- hereditary (beagle)
- most common form in people
- will become closed over time
primary closed angle glaucoma
-most common form in vet med
list of possible causes for secondary glaucoma
- anterior uveitis (obstruction of angle or pupil, peripheral anterior synechia)
- lens associated (uveitis, displacement, post op)
- neoplasia
- hyphema
- melanocytic
- pigmentary/ cystic
- aqueous misdirection
acute clinical signs of glaucoma
its always an emergency
- ocular pain (epiphora, blepharospasm)
- mydriasis
- corneal edema
- episcleral injection
- visual loss or disturbance
chronic clinical signs of glaucoma
- perminant vision loss (optic disc cupping or retinal degeneration)
- buphthalmia
- perminent corneal edema
- recurrent corneal ulcers
- lens luxation/ subluxation
- cataract formation
brachycephalic animal’s tend to have higher or lower IOP?
higher
what can happen if horse’s IOP is taken while his head is down ?
it can be increased by 87%
are equine glaucomas mostly primary or secondary
secondary
- uveitis
- ERU (equine recurrent uveitis)
- they also maintain vision longer
what horse breed has all the eye issues
appaloosa
are cats most likely to get primary or secondary glaucomas
secondary
- uveitis
- intraocular neoplasia
- aqueous misdirection
what cat breeds do we worry about with glaucoma
Siamese and Burmese
what are the treatment goats for glaucoma
- treat primary cause
- lower IOC by decreasing production and increasing outflow
- neuroprotection
