Video encyclopedia


Glaucoma is a group of eye diseases which result in damage to the optic nerve and vision loss. The most common type is open-angle glaucoma with less common types including closed-angle glaucoma and normal-tension glaucoma. Open-angle glaucoma develops slowly over time and there is no pain. Peripheral vision may begin to decrease followed by central vision resulting in blindness if not treated. Closed-angle glaucoma can present gradually or suddenly. The sudden presentation may involve severe eye pain, blurred vision, mid-dilated pupil, redness of the eye, and nausea. Vision loss from glaucoma, once it has occurred, is permanent.
  • Signs and symptoms 

  • Causes 

  • Dietary 

  • Ethnicity 

  • Genetics 

  • Other 

  • Pathophysiology 

  • Diagnosis 

  • Primary glaucoma and its variants 

  • Secondary glaucoma 

  • Absolute glaucoma 

  • Types 

  • Visual field defects in glaucoma 

  • Screening 

  • Medication 

  • Adherence 

  • Laser 

  • Canaloplasty 

  • Trabeculectomy 

  • Glaucoma drainage implants 

  • Epidemiology 

  • History 

  • Etymology 

  • Rho kinase inhibitors 

  • Neuroprotective agents 

  • Cannabis