Refer to ZAP trial, high yield
- Very long sighted (glasses prescription more than +6 dioptre).
- Family history of narrow angle glaucoma.
- Only one good seeing eye.
- Needing pupil dilating eye drops regularly e.g. diabetic patients for retinal screening.
- Living in a remote area away from access to eye care e.g. working on an oil rig.
- Taking antidepressants, regular antihistamines and certain other medications.
- Vulnerable adults who may not be able to report their symptoms.