The Difference Between an A Scan and B Scan

The Difference Between an A Scan and B Scan

If you are studying optometry, odds are you have heard of A and B scans. But you might be wondering what each does. Keep reading to learn what each scan does, their uses, and the difference between an A scan and B scan. What Are A & B Scans? A scan is short for...
What Is Considered Normal Eye Pressure?

What Is Considered Normal Eye Pressure?

Where there are fluids, there’s pressure affecting them. We’re concerned with our blood pressure and the air pressure in our tires. Sometimes less apparent to eye patients is the pressure of the intraocular fluid in their eyes. When intraocular pressure exceeds...
How To Disinfect and Calibrate Your Tonometer

How To Disinfect and Calibrate Your Tonometer

Among the most important instruments in an ophthalmologist’s office is the tonometer, which measures the pressure of fluid within the eye. Most tonometers measure intraocular fluid pressure through applanation or direct contact with the cornea. Others simply rely on...