Normal corneal thickness is about 540 microns (half of a millimeter). Thickness is checked with a handheld ultrasound device called a pachymeter.
Why Doctor may ask for this Exam?
Eye Doctor may ask this test for the following cases:
What will happen during this Exam?
In the test a local anesthetic drop is installed in each eye and a pohe touches each cornea to get the measurement.
How much time does it takes?
This test may takes 2-3 minutes.