ONH - GLAUCOMA Flashcards
what ethnicity is more at risk for POAG?
African American
what ethnicity is more at risk for normal tension glaucoma?
japanese
what type of glaucoma is drance heme more common?
normal tension glaucoma
what type of iris is associated with PDS glaucoma?
concave iris (posterior bowing iris)
what ethnicity is more at risk for PXF glaucoma?
caucasians (scandinavian) and native americans
what is a pt with PXF glaucoma at risk for?
lens subluxation – due to weaken zonules
what type of tear occurs in angle recession glaucoma?
tear of the face of the CB from the iris root and scleral spur
how does angle recession glaucoma appear in gonio?
widen CB
steroid induce glaucoma after how many weeks of steroid use?
4 or more weeks after start of steroid therapy
what are 3 types of secondary open angle glaucoma caused by inflammation?
- glaucomatocyclitic crisis
- Fuch’s heterchromatic iridocyclitis
- uveitis-glaucoma-hyphema (UGH)
define glaucomatocyclitic crisis
acute trabeculitis causes acute elevation of IOP (40-60mmHg).
symptoms of glaucomatocyclitic crisis
blur, pain, nausea, vomit, HA, colored around halos
(appears like acute angle closure)
define Fuch’s heterchromatic iridocyclitis
chronic non-granulomatous type of low grade anterior uveitis
signs: stellate KPs
define UGH?
mispositioned IOL can result in chronic inflammation, secondary iris neovascularization, hyphema
signs of UGH
uveitis, glaucoma, hyphema
what are 3 types of secondary open angle glaucoma that is lens induced?
- phacolytic
- lens particle
- lens dislocation
define phacolytic glaucoma
lens material (protein) leaks thru lens capsule + macrophages that phagocytosed the lens proteisn + inflammatory debri clog the TM and obstruct AH outflow.
define lens particle glaucoma?
liberation of lens particles after surgery or trauma clog the TM
define lens dislocation galucoma?
lens becomes dislocated – anterior dislocation causes obstruction of the pupillary aperture which leads to iris bombe and angle closure.
what kind of refractive error is associated with acute angle closure?
> 3D hyperope
what ethnicity is more at risk for primary acute anlge closure?
asians and eskimos
