IOP is the pressure inside the eye. Tonometry is the test to measure ithe IOP.

Why Doctor may ask for this Exam?

Tonometry is a routine test in evaluation and ocular exam. Eye Doctor may ask for this test for the following patients:

  • Patients who was on steroid eyedrops for juvenile rheumatoid arthritis (JRA).
  • Patient on chronic steroid drops for iritis of any cause
  • Family history of glaucoma with onset at young age
  • Previous cataract surgery
  • Port-wine stain associated with Sturge-Weber syndrome
  • Eyelid plexiform neurofibroma
  • Down syndrome
  • Hurler syndrome
  • Aniridia
  • Axenfeld-Rieger syndrome
  • Post-trauma

What will happen during this Exam?

In the test, a drop (Fluorscine) is instilled in the eye and the pressure is measured with a special built-in device in the silt lamp called applanation tonometer.

How much time does it takes?

This test takes about 1-2 minutes