Okaps flashcards - lens cataract
what type of lenticonus in Lowe’s
posterior lenticonis
alport’s syndrome
neprhopathy, deafness, anterior lencionus, and polar cataracts, micospherphakia, aminoaciduria
mittendorf dot
reminant of tunica vascular lentis
maternal infections assocaited with bilateral congenital cataracts
toxo, rubella, cmv, syphilis, varicella
christmas tree cataract
myotonic dystrophy
cataracts iwith atopic dermatitis
psc
oil droplet cataracts
galactosemia
body habitus of homocystinuria
tall, marfanoid status
elsnig peralrs
migration of lens epithelial cells from periphery of lens through space between anterior and posterior capsule
snowflake cataract
dm
drugs to avoid in sickle cell
CAI, epipnephring, alpha agnoists, hyperosmotics, beta blockers ok.
reactive foregn bodies
copper (>85% endophthamisi, <70% inert)
congeneital iris hypochormia
horne’rs waardenberg’s hirschbrung’s
acquired hypochromia
horner’s fuch’s iris atrophy, mets, JXG
acquired iris hyperchormic
iris nevus, ICE, rubeosis, siderosis, hemosiderosis, meds
how to differntiate ICE syndromes
Chandler: K edema, Iris atrophy: iris atrophy: broad PAS, ectropion uveae, iris holes, Cogan-Reese: iris nevus, corectopia
what are koeppe nopdules
along pupillary border. Busacca: anteior surface iof iris in granulomatous uveitis. Berlin: in AC angle in uveitis.
what is fuch’s adenoma
proliferation of type IV collagen.
lens fibrs with nuclei
rubella, Lowe’s trisomy 13
protens in lens
alpha: largest, 35%, beta: 55% crystlain, gamma: smallest, water insoluble correlates with cataracts
Na, K concentration in lens
high K, low Na, inverse of aqueous.
metabolism of lens
anaeboric by glycolysis.
avg lens power
birth 37D, adult 20D
2nd sight
lenitcur myopia due to increased index of refraction presbyopies can often read without spectacles
vossius ring
ring of pigment on lens from iris.
cataract with atopic dermatitis
ASC shiled like plaque
findings of myotonic dystrophy
christmas tree cataract AD, chromosome 19, ptosis, lid lag, myotonia, testicular atrophy
materials to get PCO
acrylic< PMMA
deficiency of cystathione beta snthase
homocytstinuria, bilateral ectopia, lintus, blond tall, cardiomegaly, hypercoagulatbility, general anesthesia problems
rx for homocystinuria
B6, cysteine, methionine restricted diet
sulfite oxidase deficieicny
AR, molybdenum deficiency, brushfield’s spots, seizures
hyperlysinemia
microspherophika, mental retard
cohesive OVD
long hain, high MW, high surface tension
Causes of PAC cataracts
Steroid, trauma, syphilis, rad, to, dm atopy RP, nf-2, phenothiazine a, myotonic dystrophy, refsum
dispersive OVD
low MW, low surface tension
Causes of asc cataract
5 As and a c
Aniridia, Alport, atopy, amiodarine, anticholinesterades, chlorpromazine
