Glaucoma – types, symptoms, causes, diagnosis & treatment

What is Glaucoma? Glaucoma, the Silent Thief of Sight, is a group of eye conditions that damage the optic nerve, often leading to irreversible vision loss. This condition typically develops gradually and is often asymptomatic in its early stages, earning it the reputation of being a “silent” disease.

Types of Glaucoma:

  1. Open-angle glaucoma: The most common form, characterized by gradual loss of peripheral vision.
  2. Angle-closure glaucoma: A less common but more acute form, caused by a sudden blockage of the drainage angle in the eye, leading to a rapid increase in intraocular pressure.
  3. Normal-tension glaucoma: A subtype of open-angle glaucoma where optic nerve damage occurs despite normal intraocular pressure.

Symptoms of Glaucoma:

  • Blurred vision
  • Severe eye pain
  • Headaches
  • Nausea and vomiting
  • Tunnel vision
  • Halos around lights

Causes of Glaucoma:

  • Increased intraocular pressure
  • Impaired blood flow to the optic nerve
  • Genetics and family history
  • Age-related changes in the eye
  • Certain medical conditions like diabetes and hypertension

Diagnosis of Glaucoma:

  • Tonometry: Measures intraocular pressure.
  • Ophthalmoscopy: Examines the optic nerve for signs of damage.
  • Perimetry: Assesses visual field loss.
  • Optical coherence tomography (OCT): Provides detailed images of the optic nerve and retina.

Treatment of Glaucoma:

  • Eye drops: Medications to reduce intraocular pressure.
  • Laser therapy: Procedures to improve drainage of fluid from the eye.
  • Surgery: Surgical interventions to create a new drainage channel or reduce fluid production.
  • Lifestyle modifications: Healthy habits like regular exercise and a balanced diet can help manage glaucoma risk factors.