Cyclodiode laser is used for glaucoma when other treatments have not worked or are unlikely to help, or to avoid or delay more invasive surgery. In glaucoma, the eye's drainage channels do not work properly, causing pressure to rise and potentially damaging the optic nerve.
The laser treats the ciliary body — the tissue behind the iris that produces the fluid inside the eye. By reducing fluid production, the pressure inside the eye falls. It is often used for more advanced glaucoma, when surgery is not suitable, or alongside other treatments. Modern micropulse delivery makes the treatment gentler and better tolerated.
The procedure takes place in the operating theatre, usually under local anaesthetic that numbs the eye. Drops numb the front surface of the eye and an injection around the eye makes the area numb. The laser is then applied through the white of the eye using a pen-like instrument. At the end, a steroid injection is given to reduce inflammation, an eye pad is applied, and you will be given drops to use at home. The procedure usually lasts around 20 minutes.