Tonometry: How to Remember?

5
(4)

Tonometry is the procedure performed to determine the intraocular pressure (IOP).

Principle:

  • Imbert-Fick’s law
  • P= F/A
  • A= Area of contact flattening = 3.06 sq.mm.

Tonometers are mainly of 2 types:

  1. Indentation tonometers:
    • Reading depends upon scleral rigidity: Not reliable
    • Ex:┬áSchiotz tonometer.
  2. Applatation tonometers:
    • Reading depends upon flattening of corneal surface
    • Ex: Goldmann, Perkins, Pulsair, Airpuff tonometer.
  3. (Indentation + Applanation) tonometer:
    • Ex: Tonopen.
  4. Dynamic contour tonometer:
    • Ex: Pascal tonometer.

 

MCQs on tonometer: How to Remember?

How useful was this post?

Click on a star to rate it!

Average rating 5 / 5. Vote count: 4

No votes so far! Be the first to rate this post.