👉 Goniocraniometry is a medical test that measures how straight or curved the bones in the skull are. It's used to diagnose conditions such as tumors and skull fractures, but it also helps doctors understand how the brain works. Goniocraniometry can be done with a special device called a "goniometer" which uses an eye-to-eye contact to measure the angle between two eyes. This information is then combined with other tests to help diagnose what's causing the problem.