In the U.S. today the use of the MRI is very expensive and many people no longer have it covered or have such high deductibles that they choose to go without an MRI exam. When MRI's cost in the low to medium $000's the patient will elect not to have a potential life saving procedure done. It's really bad when it's a neurological, progressive disease such as Multiple Sclerosis.
A report from Australia shows promise that MS can be diagnosed and progression noted by a simply eye exam. This is good news for U.S. citizens who can't afford diagnosis and treatments under the Affordable Care Act ( Obamacare). See below for how the procdure is used and what to look for..