Selective Laser Trabeculoplasty (SLT) is a breakthrough in the treatment of open-angle glaucoma. Recent studies, most notably the LiGHT trial, have proven that the treatment is highly effective as a first-line option, sometimes even before starting eye drops.
How does the treatment work?
The laser delivers a series of very short, gentle pulses of light onto the trabecular meshwork (the eye's drainage system). The treatment is called 'selective' because it targets only the pigment-containing cells without causing thermal damage (burns) to the surrounding tissues. In response to the pulses, the body triggers a natural healing response that 'cleans' the drainage system and improves fluid flow.
Procedure and Recovery
The treatment is performed in the clinic and takes only a few minutes, completely pain-free (anesthetic drops are applied beforehand). Afterward, there may be mild blurred vision that passes within a few hours. Unlike older laser treatments, SLT can be repeated if its effect wears off after several years. The average efficacy for lowering pressure is around 20-30%, frequently allowing patients to stop or avoid daily eye drop usage.