Why in News?
Glaucoma is in the headlines primarily due to World Glaucoma Week 2026, which is observed globally from March 8 to 14.
About
- World Glaucoma Week 2026: A global campaign organized by the World Glaucoma Association to raise awareness about the "silent thief of sight".
- Theme: The theme for 2026 is "Uniting for a Glaucoma-Free World", emphasizing collective action to eliminate blindness through early detection.
- World Glaucoma Day: Observed on March 12, 2026, as a peak day for clinical screenings and educational events.
- Treatment Breakthroughs: The start of 2026 has seen a shift toward interventional glaucoma, focusing on earlier surgical or implant-based treatments (like iDose TR) to reduce the lifelong burden of daily eye drops.
What is Glaucoma?
- Definition: A group of eye diseases that cause progressive, irreversible damage to the optic nerve, which is the vital link between the eye and the brain.
- The "Silent Thief": It is often asymptomatic in early stages; patients may lose up to 40% of their vision before noticing any symptoms.
- Prevalence: It is the second leading cause of blindness worldwide, affecting approximately 80 million people as of 2026.
Causes & Risk Factors
- Intraocular Pressure (IOP): High fluid pressure inside the eye is the most common modifiable risk factor, though "normal-tension" glaucoma can occur even with standard pressure.
- Age & Genetics: Risk increases significantly after age 40; individuals with a first-degree relative with glaucoma have a 10x higher risk.
- Ethnicity: Higher risk is noted in Black, Hispanic, and Asian populations.
- Medical Conditions: Diabetes, high blood pressure, and extreme nearsightedness (myopia) are major triggers.
Common Types
- Open-Angle Glaucoma: The most common form; it develops slowly and painlessly over many years.
- Angle-Closure Glaucoma: A medical emergency where eye pressure rises suddenly, causing intense pain, nausea, and blurred vision.
- Normal-Tension Glaucoma: Nerve damage occurs despite eye pressure being within the "normal" range.
Modern Diagnosis & Treatment
- AI Integration: New AI-enhanced tools can now analyze retinal scans to detect structural changes years before vision loss begins.
- Sustained-Release Implants: FDA-approved devices like Durysta and iDose are tiny implants that release medication for months, potentially replacing daily eye drops.
- MIGS (Minimally Invasive Glaucoma Surgery): Safer, faster procedures using microscopic stents (iStent) are now frequently combined with cataract surgery.
- Advanced Lasers: Selective Laser Trabeculoplasty (SLT) is increasingly used as a first-line treatment rather than a last resort.
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