Gonioscopy-assisted Transluminal Trabeculotomy Explained
Gonioscopy-assisted transluminal trabeculotomy (GATT) is an internal, angle-based glaucoma operation. It opens part or all of the trabecular meshwork to improve drainage of fluid from the eye. Whether it is appropriate depends on glaucoma type, severity, eye anatomy, previous treatment and the pressure target set by a glaucoma specialist.
Where GATT fits in glaucoma care
Glaucoma can damage the optic nerve and cause irreversible sight loss. Treatment aims to lower eye pressure and protect remaining vision; it cannot restore vision already lost. Depending on the individual, care may include eye drops, laser treatment or surgery.
GATT is one form of minimally invasive or micro-incisional glaucoma surgery. It does not create an external drainage bleb. This distinction may offer advantages for selected eyes, but it does not make GATT universally safer or more effective than trabeculectomy, a drainage implant or another procedure.
Assessment and alternatives
- Confirm glaucoma diagnosis, angle anatomy and stage.
- Review current pressure, medicines and treatment response.
- Discuss the pressure reduction needed to protect sight.
- Compare GATT with laser, medicines and other operations.
- Explain follow-up and the possibility of additional treatment.
Risks and follow-up
Risks can include bleeding inside the eye, pressure that is too high or too low, inflammation, infection, corneal or lens problems, scarring, failure to control pressure and further surgery. Individual risks vary. New severe eye pain, sudden visual change, increasing redness, nausea or other urgent symptoms require prompt eye assessment.
Independent background information is available from the US National Eye Institute glaucoma surgery guide. Revitalize can confirm whether an appropriate contracted eye specialist and facility are available through the contact route.
General information only; glaucoma decisions require examination by an eye specialist.