The goal is protecting remaining sight
Glaucoma treatment lowers eye pressure to reduce further optic-nerve damage; it does not restore nerve tissue already lost. Early open-angle glaucoma may give no noticeable symptoms. Feeling that you see normally is not a reason to stop drops or miss follow-up.
If the problem is burning, difficulty using the bottle, cost or missed doses, say exactly which one. These lead to different discussions. Bring the names and schedule of medicines, rather than saying only that you want ‘a modern operation’. Our glaucoma overview explains the examination and lens-choice context.
SLT is a laser treatment, not an implanted lens
Selective laser trabeculoplasty, or SLT, acts on the eye's drainage tissue to help lower pressure. NICE includes it as a first-line option for suitable newly diagnosed, non-advanced open-angle glaucoma. It is not a universal treatment for every glaucoma type.
The effect may reduce or delay the need for drops, but does not guarantee that drops will never be needed. Ask whether the drainage angle, disease type and pressure target make it appropriate, what follow-up is required, and what happens if the effect is insufficient or wears off.
What people mean by MIGS
MIGS means minimally invasive glaucoma surgery: a group of procedures, not one device or one guaranteed outcome. Some are considered alongside cataract surgery, particularly in selected mild-to-moderate open-angle disease. The exact technique, anatomy and pressure target matter; ‘less invasive’ does not mean risk-free or powerful enough for every stage.
The HORIZON randomised trial compared cataract surgery with a particular microstent against cataract surgery alone in selected patients. It supports a role for that combined approach in reducing medication burden; it does not establish that every MIGS procedure replaces conventional surgery or cures glaucoma. The finding cannot be transferred automatically to advanced disease or a different technique.
Why a bigger operation may still be the right discussion
When a very low pressure is required or disease is progressing, the clinician may discuss filtering surgery or another approach rather than a smaller procedure. The choice should follow the eye's needs, not the attraction of a newer name.
Ask for the intended pressure target, the reason for choosing this procedure over alternatives, and the plan if it does not achieve the target. Continue prescribed treatment unless your clinician changes it. Neither laser nor surgery removes the need for glaucoma monitoring.
If cataract surgery is happening too
There are two related decisions: how to manage pressure and how to replace the cloudy lens. One should not silently decide the other. Ask which improvement is expected from cataract removal and which from the glaucoma procedure.
IOL choice also needs the remaining visual function and glaucoma course to be considered. A promise of no glasses should not outweigh protecting useful vision. Read the glaucoma and IOL discussion and why contrast matters. The visual-priorities questionnaire organises tasks, not surgical eligibility.
A short appointment checklist
Sudden severe eye pain, a red eye, blurred vision with headache or nausea needs emergency assessment. Do not wait for a routine glaucoma appointment or use this article to rule out acute angle closure.
- What type and stage of glaucoma do I have, and is it stable?
- Is the problem inadequate pressure control, drop intolerance or both?
- Would SLT or a particular MIGS technique be appropriate, and why?
- How likely is continued medication, and what follow-up and alternative plan are needed?
Sources and limits
NEI: glaucoma; NICE NG81: treatment recommendations; HORIZON three-year trial findings; FDA: Hydrus safety and effectiveness assessment. Checked 11 October 2026. No individual procedure or medication change is recommended here.
Educational information—not a diagnosis or medical prescription. An eye-care professional must assess your eyes and medical suitability before treatment or surgery.