27. Diseases of the lacrimal system. Flashcards
what are the diseases of the lower lacrimal system
dacrocystitis - inflammation of lacrimal sac
most of the time unilateral
canaliculitis - inflammation of the collecting canniculi
what are the diseases of the lacrimal gland ?
keratoconjuctivitis sicca
epiphora
dacroydentitis acuta
dacryadentitis chronica
what are tumors of the lacrimal gland
pleomorphic adenoma
what causes acute dacrocystitis ?
staphylocci
pseudomonas
due to obstruction of nasolacrimal duct
signs and symptom of acute dacrocytitis ?
symptoms
radiating strong pain - radiating to forehead and teeth
fever
signs
lymphadenopathy
incomplete obstruction - pus leaving punctum lacrimal
if the infection in acute dacrocystitis spread what happens
dakyophlegmone - increased risk for cavernous sinus thrombosis
what is the aetiology of chronic dacrocystitis ?
obstruction of nasolacrimal duct - with chronic conjunctivitis / rhinitis
tumors of lacrimal sac
what are the signs and symptoms fro chronic dacrocystitis ?
epiphora - excesive watering of eye
NO SIGNS OF INFLAMMATION
signs widening of lacrimal sac
pressure to lacrimal sac - large quantities of transparent mucoid pus to regurgitate through puncture
complication of chronic dacrocystitis ?
serpiginous
corneal ulcer
what is the treatment for chronic dacrocystitis ?
surgery - dacrocystorhinostomy
what causes canniculitis ?
aktinomyceten
nocardia
what ar the signs and symptoms for canniculitis ?
region is swollen and red and tender
epiphora
accompanying conductivity
pus
treatment for canniculitis ?
antibiotics or surgical incision of canniculus
what is keratoconjuctivitis sicca?
dryness of the conjunctiva and the cornea
what causes keratoconjuctivitis sicca?
decrease team - lacrimal gland atrophy with age
aplasia of lacrimal gland -sjoren syndrome, SLE sacroidosis
disturbance of mucin layer - vit a deff
disturbance of lipid layer - chronic blepharitis
rare blinking - parkinsons