MRCEM Notes

Primary open-angle glaucoma

Glaucoma is a group disorders characterised by optic neuropathy due, in the majority of patients, to raised intraocular pressure (IOP). It is now recognised that a minority of patients with raised IOP do not have glaucoma and vice versa

Primary open-angle glaucoma (POAG, also referred to as chronic simple glaucoma) is present in around 2% of people older than 40 years. Other than age, risk factors include:
  • family history
  • black patients
  • myopia
  • hypertension
  • diabetes mellitus

POAG may present insidiously and for this reason is often detected during routine optometry appointments. Features may include
  • peripheral visual field loss - nasal scotomas progressing to 'tunnel vision'
  • decreased visual acuity
  • optic disc cupping
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