Diagnosis & Tests

An optometrist or ophthalmologist will usually do the following to check for glaucoma:

  • Ask whether you have any risk factors for glaucoma.
  • Check your vision.
  • Measure the fluid pressure inside your eyes.
  • Measure the thickness of your cornea (the clear front surface of the eye).
  • Check your peripheral (side) and central vision. Glaucoma usually affects peripheral vision, which is harder to notice than the loss of central vision. People with glaucoma may be able to read and to pass driving vision tests, even though they have a loss of peripheral vision.
  • Look at your retina (the inner surface of your eye).
  • Check your optic nerve for signs of damage.
  • Do additional tests if needed.


Last Updated August 2020