Why SLT (Selective Laser Trabeculoplasty) Is Becoming a First-Choice Treatment for Glaucoma
I’m Professor Dan Lindfield, and I want to share why Selective Laser Trabeculoplasty (SLT) is increasingly being seen as one of the best treatment options for open-angle glaucoma and ocular hypertension.
What SLT Is & How It Works
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SLT is a safe, outpatient laser procedure that gently “tickles” the drainage tissue in the eye (the trabecular meshwork), helping the natural fluid (aqueous humour) to drain better.
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It’s done without cutting, with anaesthetic eye drops, and usually takes under 5 minutes per eye. Recovery is fast—often just 1-2 days.
Key Advantages Compared with Other Treatments
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First-line treatment: SLT can be used as the primary option instead of—or before—daily eye drops. For many patients it provides 2-4 years of good pressure control, delaying or reducing the need for medications.
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Effectiveness: It lowers intraocular pressure (IOP) to levels comparable to those achieved with one glaucoma eye drop.
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Repeatability: Because SLT does not permanently damage the drainage tissue, it can be safely repeated if its effect diminishes over time.
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Reduced need for invasive surgery: For many patients, SLT reduces the likelihood of needing more invasive glaucoma surgeries later.
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Potential protection against cataract development: There’s emerging evidence that SLT may also help reduce the risk of developing cataracts.
What to Know About Risks & Side Effects
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Mild, temporary effects: Some patients may experience redness, ache, or sensitivity to light; these generally settle over a few days. Anti-inflammatory drops help manage them.
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Short-term pressure spike: Rarely, there may be a temporary rise in eye pressure immediately after the procedure—but this can be prevented or treated.
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Very rare complications: Iris adhesions, corneal or macular swelling have been reported, but these are extremely uncommon.
Is SLT Right for You?
Deciding whether SLT is the best route depends on your individual situation. Some points to consider:
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The severity of your glaucoma or ocular hypertension.
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How well you tolerate or adhere to glaucoma medications.
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Your goals—whether you want to reduce or stop daily drops, avoid invasive surgery, or maintain long-term eye health.
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Any other eye conditions that might affect your suitability.
If you’re considering SLT, I’d be happy to evaluate whether it might suit you—tailoring the plan to your eyes, your lifestyle, and your visual goals.
