Intraocular pressure measurement

Question 1

The examination to determine IOP is called _____

Answer 1

Tonometry

Question 2

Tonometers measure IOP by principles of ______ or _____

Answer 2

Applanation or Indentation

Question 3

The form of tonometry in which the force required to flatten a small area of the central cornea is measured and extrapolated into IOP

Answer 3

Applanation

Question 4

The form of tonometry in which the amount of corneal indentation produced by a fixed weight is measured

Answer 4

Indentation

Question 5

IOP is expressed in?

Answer 5

millimeters of mercury (mm Hg)

Question 6

The normal IOP ranges between __ and __ mm Hg

Answer 6

10 to 21

Question 7

A tonometer that is attached to the slit lamp that measures IOP by determining how much force is needed to flatten the central cornea is a

Answer 7

Goldmann applanation tonometer

Question 8

The portable electric tonometer used to measure IOP is the

Answer 8

Tono-Pen

Question 9

The handheld applanation tonometer is known as the

Answer 9

Perkins tonometer

Question 10

An instrument that uses compressed air and a piston-like wand to applanate the surface of the eyeball and measure the IOP is the

Answer 10

Pneumatonometer

Question 11

The Goldmann applanation tonometer flattens a circle ___ in diameter

Answer 11

3.06mm

Question 12

An indentation contact tonometer that uses weights and a table of measurements based on the weight used to determine IOP

Answer 12

Schiotz tonometer