Glaucoma

Glaucoma refers to a group of optic neuropathies characterized by progressive damage to the optic nerve, often associated with elevated intraocular pressure (IOP). It leads to irreversible loss of peripheral vision and, if untreated, blindness. Early detection through routine eye exams is crucial because symptoms often appear late.

Types

• Primary open-angle glaucoma (POAG): most common; gradual trabecular meshwork dysfunction
• Normal-tension glaucoma: optic nerve damage despite normal IOP
• Angle-closure glaucoma: sudden blockage of aqueous outflow; acute attacks are emergencies
• Secondary glaucomas: due to inflammation, trauma, steroids, neovascularization, etc.

Risk Factors

• Age > 40, African or Hispanic ancestry
• Family history of glaucoma
• Elevated IOP, thick cornea (protective), thin cornea (risk)
• Myopia (POAG) or hyperopia (angle-closure)
• Diabetes, hypertension, prolonged steroid use

Symptoms

• POAG: asymptomatic early; slowly progressive peripheral vision loss, tunnel vision late
• Angle-closure: sudden severe eye pain, halos, headache, nausea/vomiting, blurred vision

Diagnosis

• Comprehensive dilated eye exam with optic nerve evaluation
• IOP measurement (tonometry)
• Gonioscopy to assess drainage angle
• Visual field testing (perimetry) to detect functional loss
• Optical coherence tomography (OCT) to measure retinal nerve fiber layer and ganglion cell complex
• Pachymetry for corneal thickness

Treatment & Management

First-Line: Topical Medications

• Prostaglandin analogs (latanoprost) increase outflow
• Beta-blockers (timolol), alpha-agonists (brimonidine), carbonic anhydrase inhibitors (dorzolamide)
• Rho kinase inhibitors (netarsudil) for additional lowering
• Combination drops improve adherence

Laser Therapy

• Selective laser trabeculoplasty (SLT) for POAG (as primary or adjunct therapy)
• Laser peripheral iridotomy for narrow-angle/angle-closure

Surgical Options

• Trabeculectomy, glaucoma drainage devices, minimally invasive glaucoma surgery (MIGS), canaloplasty
• Cyclophotocoagulation for refractory cases

Monitoring

• Lifelong follow-up: IOP checks, visual fields, OCT
• Adherence to drops is essential; instillation technique training

Lifestyle & Safety

• Maintain overall cardiovascular health; exercise may help lower IOP
• Avoid excessive fluid intake in short periods; limit head-down yoga poses
• Inform doctors about glaucoma before prescribing steroids
• Wear protective eyewear to avoid trauma

Complications

• Progressive vision loss leading to blindness
• Medication side effects (ocular surface disease, systemic effects)
• Postoperative scarring or infection after surgery

Research & Future Directions

Efforts focus on neuroprotection, sustained-release drug delivery, gene therapy, and AI-based early detection.

Experimental & Emerging Treatments

• Sustained-Release Implants (bimatoprost ring, travoprost intracameral implant): Reduce drop burden.
• Neuroprotective Agents: Brimonidine implants, NMDA antagonists, and mitochondrial stabilizers.
• Gene Therapy: Targeting trabecular meshwork function or optic nerve resilience.
• AI-Enhanced Screening: Deep-learning algorithms analyzing fundus/OCT images for earlier diagnosis.

Track Glaucoma with Diagnoza.care

Stay on Top of Eye Pressure – Log IOP readings, medications, laser/surgery dates, visual field/OCT results, adherence, side effects, and ophthalmology visits; let the AI companion remind you of drop schedules and follow-ups.

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Medical Disclaimer: Informational only. Work with your ophthalmologist for personalized monitoring intervals, medication regimens, and procedural decisions. Sources: American Academy of Ophthalmology, Glaucoma Research Foundation, National Eye Institute