Red eye Flashcards
causes of a red eye
conjunctivitis / blepharoconjunctivitis keratitis anterior uveitis scleritis / episcleritis acute closed angle glaucoma subconjunctival haemorrhage orbital cellulitis
what happens in subconjunctival haemorrhage
vessels split, blood filled blister
not as bad as it seems
RF: trauma, antithrombotics, valsalva
features of subconjunctival haemorrhage
self limiting but will remain red throughout healing eg 1-2 weeks
investigate if recurrent
asymptomatic
features of orbital cellulitis
rare
sight threatening
emergency
can track back to brain and create abscess
what is a cicatricial ectropion
contracture of skin pulling lid away from the globe e.g. scarring, skin tumour
can cause dry eyes –> corneal ulcer –> sight threatening
pain with a gritty sensation is extra/intra-ocular in origin
extra ocular
pain with an achy sensation is extra/intra-ocular in origin
intra ocular
what is blepharitis
inflamed eyelids
describe signs of anterior blepharitis
margin of lid is redder than deeper part of lid
symptoms of blepharitis are similar to those of conjunctivitis, true or false
true
gritty eye sensation
mild discharge
types of anterior blepharitis
seborrhoeic - red margin, scaly, dandruff, lashes unaffected
staphylococcal - red margin, ulcers, styes, corneal staining, lashes affected
describe posterior blepharitis
deeper part of lid is redder than the margin
pathology behind posterior blepharitis
Meibomian gland dysfunction
signs of posterior blepharitis / meibomian gland dysfunction
swollen gland openings
meibomian cyst = chalazion
with which dermatological condition is posterior blepharitis associated with
rosacea
management of blepharitis
eyelid hygiene
hot towel compresses
ter drops
tetracyclines 2-3 months
chalazions may cause temporary astigmatism, true or false
true
what is conjunctivitis
inflammation of the conjunctiva
symptoms of conjunctivitis
red eye gritty discharge / sticky itchy unaffected vision
signs of conjunctivitis
red eye chemosis discharge papillae / follicles subconjunctival haemorrhage
what are the types of conjunctivitis
infective
non-infective