A reading of 3 on the Goldmann tonometer dial indicates what level of intraocular pressure?

A reading of 3 on the Goldmann tonometer dial corresponds to an intraocular pressure (IOP) of 30 mm Hg. The Goldmann tonometer is calibrated so that each division or increment represents a specific pressure measurement in mm Hg. Typically, the scale is set such that a reading of zero corresponds to a baseline measurement, and the subsequent readings are based on this starting point.

In the case of the Goldmann tonometer, it is essential to consider that the readings directly correspond to pressure levels based on the scale used. Therefore, the reading of 3 signifies a level of intraocular pressure that is within the range indicative of elevated IOP, which is clinically significant, particularly in the context of conditions like glaucoma.

Recognizing how tonometry readings relate to clinical evaluations is crucial for accurate diagnosis and management of ocular conditions.