The Gold Standard
Goldmann applanation tonometry is the most commonly used tonometer in clinical practice and remains the “gold standard” for tonometry worldwide. It was developed in the 1950s and is based on the Imbert-Fick law that states that the pressure in a sphere filled with fluid and surrounded by an infinitely thin and flexible membrane is measured by the counter-pressure, which just flattens the membrane to a plane.
When selecting the TN-150, you can count on accurate readings regardless of scleral rigidity. Measuring pressure also can be calibrated, which ensures reliable measurements and guarantees stability over a long period of time. During measurement, you can observe through the left eyepiece.
When used with slit lamp, it can be used to examine the eyes and mensure the ocular pressure. Directly get the ocular pressure and do not need to look up the conversión table. The measured ocular pressure is not affected by harenes of eye.