What it is
Cyclocryotherapy is a cyclodestructive procedure for glaucoma. A freezing probe is applied to the surface of the eye over the ciliary body — the tissue that produces the fluid inside the eye (aqueous humour). Controlled freezing reduces how much fluid is made, which lowers eye pressure.
Who it's for
Selected people with refractory glaucoma — glaucoma that stays uncontrolled despite other treatments — or when other treatment options are insufficient or unsuitable.
What to expect
The procedure is done under local anaesthesia, usually with an injection around the eye so that it is numb. The freezing probe is applied at several points around the eye, and the procedure takes a short time.
Recovery
Pain, redness and swelling are common for a few days and are managed with prescribed drops and pain relief. Your eye pressure is checked at follow-up visits, and the treatment sometimes needs to be repeated to reach the target pressure.
Frequently asked questions
Why is cyclocryotherapy used only in selected cases?
It lowers pressure by reducing fluid production rather than improving drainage, and is usually considered when other treatments have not controlled the pressure. Your doctor will explain whether it is suitable for you.
Will I still need glaucoma drops?
Often yes. Many people still need some drops afterwards, and regular follow-up is essential.
Medically reviewed by Dr. Sweta Patro