Corrections 2 Flashcards
What is the most common underlying cause of a vitreous haemorrhage?
Proliferative diabetic retinopathy
Mx of proliferative diabetic retinopathy? (2)
1) intravitreal VEGF inhibitors
2) panretinal laser photocoagulation
Mx of a corneal abrasion?
topical abx to prevent 2ary bacterial infection
What 2 investigations are required to confirm the diagnosis of AACG?
1) tonometry (measures IOP)
2) gonioscopy (measures angle)
In what condition are severe retinal haemorrhages seen on fundoscopy?
Central retinal vein occlusion –> ‘stormy sunset’
What is a key difference for central retinal vein occlusion (CRVO)?
Branch retinal vein occlusion (BRVO)
What happens in BRVO?
This occurs when a vein in the distal retinal venous system is occluded and is thought to occur due to blockage of retinal veins at AV crossings.
It results in a more limited area of the fundus being affected.
How to differentiate CRVO from BRVO on fundoscopy?
BRVO –> more limited area of fundus is affected
1st line mx of primary open angle glaucoma?
360° selective laser trabeculoplasty (SLT) if the IOP is ≥24 mmHg
2nd line mx of 1ary open angle glaucoma?
Prostaglandin analogues e.g. latanoprost
Mechanism of action of latanoprost?
Increases uveoscleral outflow
Adverse effects of latanoprost (prostaglandin analgoue)?
1) brown pigmentation of the iris
2) increased eyelash length
3) periocular pigmentation
Complications of ocular involvement in herpes zoster ophthalmicus?
- anterior uveitis
- keratitis
- conjunctivitis
- episcleritis
Role of cycloplegic eyedrops (e.g. atropine)?
Paralysis of ciliary muscle –> dilatation of pupil & paralysis of accomodation.
Mx of anterior uveitis?
steroid drops + cycloplegic (mydiatric) drops
