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28 Cards in this Set
- Front
- Back
Most indicative manifestations of glaucoma:
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notching> c/d, asymmetry, disc heme > disc asymmetry
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Rizzuti sign
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conical light reflection from temporal light source on nasal cornea
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POAG risks:
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**thin K's**, FmHx, AfAm, age >50, DM, high myopia, RD, CRVO
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Acute glaucoma
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hydropic degeneration & impaired axonal outflowON edema & hyperemia; prior episodesglaukomfleken & ON pallor & cupping
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Pseudoexfoliation (PXF)
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age related; build up of abn fibrillar material; 50/50 uni/bilateral; IOPs often higher than COAG; less responsive to meds; Krukenberg spindle; decreased endothelial cell density, pigmented TM, narrow angle, poor dilation, NS, zonular weakness, peripupillary TID, Sampaolesi’s line (pigmented Schwalbe’s line); 20-60% risk of glaucoma; lens extraction=no help
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Uveitic glaucoma
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1) inflamm debris obstructs angle 2)hyperviscose Aqueous 3)NV 4) uveal effusion 5)papillary block 6) PAS
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Increased episcleral venous pressure
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Sturge-Weber, Graves, AVF, SVC syndrome
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glaucoma secondary to Malignant melanoma
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most commonly glaucoma from NVA, esp after radiation; also, TM obstruction by melanin-containing macs, direct tumor extension into TM, angle closure from ant displacement of lens-iris diaphragm or PAS & inflammation
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Steroid induced
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?secondary to GAGs accumulating in TM
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Aqueous misdirection (Malignant)
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aqueous is misdirected into vit cavity pushing everything forward; flat AC, moderately high IOP; Risk factors: crowded AC (angle closure, nanophthalmos, older, women, hyperopes), post op inflammationswelling of CB & CP; TX=mydriasis/cycloplegics to pull lens-iris diaphragm posteriorly; in pseudophakes, YAG ant hyaloids; VTX
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Pupillary block
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shallow AC, mildly inc IOP, peripheral I-K touch; Tx=cyclo, PI, steroids
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Post trauma glaucoma
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spontaneous closure of cyclodialysis cleft weeks to months after injury results in a chronic hypotonous eye to have extremely high IOP until TM system “wakes up”
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Lens particle
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post trauma or post op residual cortexmay spontaneously resorb
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Phacoanaphylactic
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traumaruptured lens capsulegranulomatous inflammation
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Phacomorphic
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large crystalline lenspupillary blocksecondary angle closure
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Phacolytic
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mature lens leaksmacs attackobstructs TM; TX=lensectomy
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epithelial downgrowth
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epi gets to AC following intraocular procedures; Tx=unrewarding; goal=close fistula, excise
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glaucoma due to scleral buckles
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interfere w/ venous drainage of uveal tract swelling & ant rotation of CBangle closure
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Schwartz’s syndrome
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open angle glaucoma secondary to RRD as outflow is obstructed by pigment (from RPE), GAGs (from photoreceptors) or photoreceptor outer segments; resolves after RD repair
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nanophthalmos
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thick scleravenous outflow restrictionuveal effusionsant CB rotationangle closure
involved protruding tissue (ex. Iris) w/ cryo to destroy intraocular epi |
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UGH
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AC IOL chafes irisuveitis, glaucoma, hyphema; tx=lensectomy
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Posner Schlossman (glaucomatocyclitic crisis)
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20-50; unilateral mild or no discomfort +/- blurry VA w/ profound IOP spike that precedes AC rxn (KP + faint flare & mild ciliary flush w/out iris changes) & last hours to weeks & is self-limited; idiopathic; flat stellate KP in inf ½ of K; +synechiae
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Ghost cell
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VH + ant hyaloids breakAC candy stripe hyphema
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Hemolytic glaucoma
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hemoglobin laden macs block TM
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Fuch’s HI
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like Posner Schlossman but w/ iris hypochromia & white iris nodules
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congenital glaucoma
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2/3=bilateral, 10%=AR (familial); IOP>21, C/D>0.3 (2.6% normal variant), K diameter > 12.5, open angle w/ ant iris insertion, no other iris abnormality; 5% parental risk w/ future pregnancies & 5% pt passing to kids;
<3mo—presenting symptom=clouding & tearing (eyes typically kept closed) >3mo—presenting symptom=K enlargement Prognosis: APD-irreversible; cupping-potentially reversible secondary myopic shift from globe enlargement; “Barkan’s membrane” may overlie angle & require incision at time of goniotomy |
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congenital glaucoma--DDx
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***Diff dx: neural crest dysgenesis (aniridia, peteres, axenfeld-rieger), phakomatoses, metabolic d/o (lowes (UA for protein & aminoacids), homocyst, mucopolysacc), inflamm (cong rubella (IgM), HSV), neoplasm (Rb, JXG), X-linked megalocornea, downs, pataus, zellweger, rubinstein-Taybi, PHPV, ROB, trauma, steroid use
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Haab’s striae:
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horizontal Descemets breaksdue to congenital glaucoma
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