Viscocanalostomy for Glaucoma: Uses, Risks and Follow-Up

Viscocanalostomy is a non-penetrating glaucoma operation intended to improve drainage of fluid from the eye and lower intraocular pressure. It is not a new universal treatment and is not suitable for every type or stage of glaucoma.

Why it may be considered

An ophthalmologist should assess the glaucoma diagnosis, drainage angle, eye pressure, optic nerve, visual field, medicines, previous laser or surgery and the person’s ability to attend follow-up. Alternatives may include monitoring, eye drops, laser, trabeculectomy, drainage devices or another glaucoma operation.

Procedure and limitations

The surgeon creates a scleral flap and works near Schlemm’s canal to improve aqueous drainage without deliberately entering the anterior chamber in the same way as trabeculectomy. Technique varies. Pressure may remain too high, medicines may still be needed and further laser or surgery may be required.

Risks and follow-up

Possible complications include bleeding, infection, inflammation, low or high eye pressure, scarring, cataract, damage to nearby structures, vision change and failure to control glaucoma. Close pressure, optic nerve and visual-field monitoring remains essential because glaucoma damage can progress without obvious symptoms.

The NICE glaucoma guideline provides the wider framework for diagnosis, treatment and monitoring. Procedure choice should be made by a glaucoma specialist using the individual findings rather than a quoted success percentage.

Revitalize care checks

Confirm the named contracted ophthalmologist and hospital, diagnosis, proposed procedure, alternatives, tests, quotation, follow-up and emergency plan. See Revitalize’s eye treatment information and contact route.