Eye Pathology Flashcards
caused by acute folliculitis of the Meibomian or Zeis glands
sty (hordeolum)
most common malignancy of the eyelid? commonly at lower eyelid or medial canthus
basal cell carcinoma, sebaceous carcinoma, and Kaposi
most type of conjunctivitis
allergic
bacterial conjuncitivitis due to?
H. influenza and strep pneumo
leading cause of blindness worldwide?
chlamydia
treatment for conjunctivitis?
vasoconstrictors, antibiotics
dry eye, painful drying and scarring of the cornea in _____ syndrome
Sjogren
idiopathic dry eye seen commonly in _______, may be associated with _______
older women, menopause
vascularized conjunctival tissue, which may grow over iris obscuring vision
pterygium
has more pain nerve fibers than any other tissue in body, heals faster than any other tissue in body, basement membrane does not regenerate following injury
cornea
physical exam reveals conjunctivitis, best treated with patch, antibiotics rarely necessary
corneal abrasions
causes multiple, minute corneal ulcers, may be primary or recurrent, should NOT be treated with steroids, looks like chinese character
herpes simplex corneal ulcers
fungal keratitis of cornea
fusarium
most common cause in US is aging, replacement is routine treatment
cataracts
optic neuropathy, excavation of optic nerve head and progressive loss of visual field sensitivity, usually caused by increased intraocular pressure
glaucoma
AV nicking, hemorrhage, micro-aneurysms, exudates, and cotton wool spots (infarcted nerve fiber layer)
hypertensive retinopathy
characterized by neo-vascular proliferation in the retina, which obscures vision, retinal detachment and blindness common
proliferative retinopathy
high oxygen tension in premature infants, proliferative retinopathy occurs, maybe accompanied by retinal detachment and fibrovascular mass behind lens
retinopathy of prematurity
can be caused by histoplasmosis, toxoplasmosis, CMV, toxocara
retinitis
dog and cat roundworms can cause a syndrome of visceral larvae migrans (VLM) or _______ in humans, cataract due to infammation and scarring b/c larvae passing through anterior chamber
toxocariasis
associated with a retinal tear, often due to trauma or collapse of vitreous, traction detachment-adhesions formed during diabetic retinopathy or infection may pull retina away from pigment layer
rhegmatogenous retinal detachment
collection of fluid between the retina and pigment epithelium, occurs during choroiditis or melanoma
non-rhegmatogenous retinal detachment
most common cause of decreased visual acuity (blindness) in the US, may be related to smoking, hyperlipidemia, or genetic causes
age related macular degeneration
edema of head of optic nerve, due to compression of nerve of elevated CSF pressure
papilledema