Laser peripheral iridotomy
A quick guide for patients
What is it?
Laser peripheral iridotomy makes a small opening near the edge of the iris, the coloured part of the eye. It is used to treat or help prevent angle-closure glaucoma.
Why is it recommended?
A narrow drainage angle can allow pressure to rise inside the eye. The opening helps fluid move through the eye and aims to reduce the risk of pressure-related damage.
What should I know?
The treatment aims to protect the sight you still have; it does not restore sight already lost. Risks include a temporary pressure rise, inflammation and bleeding. Read the full benefits and risks before deciding.
What happens afterward?
Your eye pressure is checked after treatment, and follow-up is important. Use drops as instructed. The leaflet advises not driving for 24 hours afterward; discuss your return to driving and work with your care team.
Source: GCEO patient leaflet · PDF pages 3–5, 8–9 · Page numbers include the cover.