UCL Institute of Ophthalmology


What is Glaucoma?

About Glaucoma

  • Glaucoma is damage to the optic nerve that is caused by elevated pressure in the eye

What if I have high pressure but no damage to the eye?

  • You are termed as being ocular hypertensive
  • The structures of the eye are strong enough to withstand high pressure

What causes high pressure?

  • When the amount of fluid produced by the eye is greater than the amount that exits the eye. Normally the amount produced and the amount that exits are balanced which results in good eye pressure

What are the types of glaucoma?

Open Angle Glaucoma

  • The most common type
  • The drainage angle is open but the drainage pores gets blocked
  • Symptoms are only noticeable when advanced

Closed Angle Glaucoma

  • The angle closes gradually over time
  • Eye pressure can then become much higher very quickly
  • Can cause discomfort, redness and intense pain