Dry Eye and everything else .. Flashcards
Conjunctival pain
- irritation
- scratching
- burning
- pricking
Corneal/ internal pain
- deep aching pain
- referred to brow/orbit/jaw
- iris sphincter and ciliary spasm
Proper word for eye strain pain
Aesthenopia
How should eye pain be treated?
- treat cause
- give cycloplegics for ciliary spasm
- systemic analgesics if necessary
- do not prescribe topical anaesthetics
RAPD
relative afferent pupillary defect
Types of dilating drops
- mydriatics (dilate pupil)
- cycloplegics (paralyse the ciliary muscle)
Examples of cycloplegics
- atropine (antichol, lasts 2 weeks)
- cyclopentolate (antichol, lasts 24hrs)
Examples of mydriatics
- tropicamide (anticol, lasts 12 hr)
- phenylephrine (sympathomimetic, lasts 12 hrs) - dont use if severe HT!
Who should not get tropicamide?
Those with positive eclipse sign
What can cause a mid-dilated pupil?
- third nerve palsy
- acute glaucoma
Causes of small pupils
- ciliary and sphincter spasm (uveitis and intraocular inflammation)
- horners syndrome
- pilocarpine (used for glaucoma)
- Argyll Robinson pupil (neurosyphillis)
Characteristics of Argyll Robertson pupil
- small bilaterally
- irregular
- dilates poorly
- light near dissociation in the presence of normal vision
Characteristics of Horner’s syndrome
- ptosis
- miosis
- anhidrosis
Potential problems with heterchromia and decreased VA
- Fuchs
- intraocular metallic foreign body
Who to refer a 3rd nerve palsy with pupil sparing
Neurologist