Lisa Quinn revision Flashcards
causes of red eye
types of conjunctivitis
1) Bacterial
2) Viral
3) Allergic
- Antihistamines
- Marcel stabiliser – cromoglycate eye drops
Blephritis
Inflammation of the eyelid margin -> meiobian gland
- Rosea is a risk factor
- Styes (on eyelid margin) and chalazians (away from eyelid margin)
- Warm compress
uveitis
o Steroid eye drops
o Use cycloplegics to relax ciliary bodies to dilate the eye -> iris can get stuck to cornea -> cycloplegics stop this
Corneal Ulcers
- Bacterial infection -> contact lenses
- Fluorescein state
Scleritis
VERY VERY VERY PAINFUL
epscleritis
- Dull ache
- Reassure and discharge
- Phenylephrine added to eye will cause blanching (will go less red)
Endophthalmitis
- Post op
- IV antibiotics
Differentiating red eye
- Painful
- Painless
- Vision
- Normal intraocular pressure or raised? (normal 10-21mmHg)
red eye and pain
red eye and intraocular pressure
history for red eye
- SOCRATES
- Specific
o Type of pain: e.g. gritty
o Itchy
o vision change?
o Contact lense wearer
o History of trauma
o Double vision
o RICP symptoms
Headache
N and vomiting
o Coryzal symptoms - Past medical history
subconjunctival haemorrhage
- Can cause grittiness
- Foreign body sensation
Cause
- Can be spontaneous or coughing
Risk factors
- High blood pressure, blood thinners
horners syndrome
Features: SPAM
* Sympathetic systme
* Ptosis
* Anhidrosis
* Miosis
- Angle closure glaucoma
- > 30mmHg measured using Goldmans tonometry
- Fixed eye- key
- Vision: halo sign
Management
- Timolol
- Pilocarpine
- Acetazolamide (TAP)
- Laser iridotomy
o Works by producing a hole, allowing an alternative hole for the aqueous to flow
pathophysiology of acute angle closure glaucoma
When pupil dilates the iris crumples up to the corner i.e. if you are in a dark room like a cinema -> stops drainage -> can get stuck in this position therefore pupil dilatation
management of glaucoma
- ABC reduce production of aqueous from ciliary body
- PAP -> increases flow through trabecular network
- Mannitol is last resort
Oculomotor nerve palsy