About the service
Laser trabeculoplasty improves natural aqueous outflow and helps lower eye pressure. Indications are determined after gonioscopy and glaucoma assessment.
Laser trabeculoplasty: indications, outcomes, and follow-up
Laser trabeculoplasty helps lower intraocular pressure (IOP) by acting on the eye’s natural drainage system. Glaucomatous optic nerve damage involves several factors, while IOP remains the main modifiable risk factor.
How does selective laser trabeculoplasty work?
Selective laser trabeculoplasty (SLT) targets the trabecular meshwork within an open anterior chamber angle.
Current evidence supports its use as an additional treatment when drops are insufficient and as an initial treatment option for selected patients with open-angle glaucoma or ocular hypertension.
When is SLT considered?
- Newly diagnosed open-angle glaucoma: after gonioscopy and risk assessment, the clinician discusses SLT and eye drops as possible initial options.
- Drops provide insufficient pressure reduction or are difficult to use regularly: SLT may provide additional IOP reduction and reduce the medication burden in some patients.
- The effect of previous SLT has diminished: if IOP rises above target again, the clinician assesses repeat treatment or a change in therapy.
- A narrow or closed angle: the mechanism of IOP elevation is established first. Iridotomy or another approach may be needed. SLT is possible only when the trabecular meshwork is accessible for treatment.
Which examinations help guide treatment?
- Gonioscopy: assessment of the anterior chamber angle and trabecular meshwork accessibility before deciding on SLT.
- Cirrus-HD OCT of the optic disc: structural assessment when indicated.
- Spectralis retinal nerve fiber layer imaging: assessment of structural changes when indicated.
How is the outcome assessed?
Effectiveness is assessed by achieving an individualized target IOP and maintaining subsequent optic nerve and visual field stability.
SLT does not restore visual field areas that have already been lost and does not guarantee freedom from pressure-lowering medication.
The goal is to reduce the risk of further optic nerve damage with a treatment profile acceptable to the patient.
Why is long-term follow-up necessary?
IOP monitoring, periodic visual field testing, and optic nerve structural assessment remain necessary after SLT. A good laser response does not mean that glaucoma has been cured.
The target pressure may change if the disease progresses, and the effect of SLT may diminish over time.
Decisions about stopping drops, repeating laser treatment, or proceeding to surgery are based on examination findings over time. Patients should not change prescribed therapy independently.