Glaucoma Treatment Abroad: MIGS, Laser, and Surgical Opti...

Vision & LASIK · 3 · August 15, 2025

Glaucoma affects 80 million people worldwide and is the leading cause of irreversible blindness. Eye drop therapy remains first-line treatment, but 30-40% of patients eventually need procedural intervention due to medication failure, side effects, or compliance issues.

MIGS: The Gentle Revolution

Minimally Invasive Glaucoma Surgery encompasses several implant-based and tissue-modifying procedures performed through a tiny corneal incision — often combined with cataract surgery. The iStent inject W (Glaukos) places two titanium micro-stents into the trabecular meshwork, improving aqueous outflow. It reduces IOP by 20-30% and is FDA-approved for mild-to-moderate glaucoma.

The Hydrus Microstent (Alcon) is a crescent-shaped nitinol scaffold that spans 3 clock hours of Schlemm's canal. The HORIZON trial showed 30% of Hydrus patients were medication-free at 5 years versus 9% of cataract-surgery-alone patients. These devices are most effective in early-to-moderate glaucoma — they're not sufficient for advanced disease.

SLT: The Repeatable Laser Option

Selective Laser Trabeculoplasty uses a nanosecond YAG laser to stimulate the trabecular meshwork without thermal damage. It reduces IOP by 20-30% and can be repeated multiple times over a lifetime. The LiGHT trial (Lancet, 2019) demonstrated SLT as a viable first-line treatment — 74% of SLT-first patients required no eye drops at 3 years. Cost: $200-$500 per eye in India, $800-$2,000 in the US.

Traditional Trabeculectomy: For Advanced Disease

When MIGS and laser aren't sufficient, trabeculectomy creates a new drainage pathway through the sclera. It achieves the largest IOP reduction (30-50%) but carries higher complication risk: hypotony (over-filtration) in 10-15%, bleb-related infection in 2-5% over 5 years, and cataract progression in 30-50% within 3 years. Pricing in India: $1,000-$2,000. In the US: $5,000-$10,000.

Cost Comparison

| Country | Cost Range (MIGS (iStent + cataract surgery))

| United States | $8,000–$15,000

| India | $1,500–$3,000

| Turkey | $2,500–$5,000

| Mexico | $3,500–$7,000

Key Takeaways

- MIGS devices reduce IOP by 20-30% with minimal risk — ideal for mild-to-moderate glaucoma

- SLT laser can replace eye drops in 74% of patients and is repeatable over a lifetime

- Trabeculectomy remains necessary for advanced disease but carries higher complication rates

- Combining MIGS with cataract surgery abroad saves $5,000-$12,000 vs US pricing

Compare real-time pricing using our global cost calculator.