Different ways. Commonly, goldmann applanation with the blue light or air puff pneumotonometer. We also use tonopen, icare, pascal, reichert's, perkin's, and palpation depending on the cornea status. Schiotz is rarely used anymore.
Different ways. The most common method is goldmann tonometry, but newer tonometers have become available that take into account the biomechanical properties of the cornea that can influence the readout of intraocular pressure.
Schiotz tonometer. I commonly use a sterilized schiotz indentation tonometer in a sterile field. The accuracy is fair, but the instrument can be sterilized and will not compromise the sterile field. Read more...