Pachymeters measure the thickness of the cornea in a unit known as micrometers, which is how the pachymeter can assess the eye. It uses an ultrasonic device to touch the cornea. Advanced pachymeters use CWF instead, which is another type of sound-based power wave that can read the depth thickness a lot faster.
This process of using sound waves to measure the thickness of the cornea is connected to a fast computer, which can read the results in real-time and offer the examiner an insight into what’s going on around the eye. The machine also has the ability to confirm that the readings are accurate. Pachymeters are also useful for measuring a patient’s changes in their corneal structure over time, and can be a great help for an ophthalmologist to see if any medical changes are being made.
Pachymeters are traditionally used like a pen to measure the cornea’s thickness, and often resemble a long pregnancy test. Newer pachymeters are devices that can digitize the cornea’s readings, and are also able to superimpose the readings over time to see if any changes in the cornea have been made. They can also measure other types of structures, such as air bubbles that may form on the cornea.