Intraocular pressure (IOP) is the fluid pressure inside the eye. Tonometry is the method eye care professionals use to determine this. IOP is an important aspect in the evaluation of patients at risk of glaucoma.[1] Most tonometers are calibrated to measure pressure in millimeters of mercury (mmHg).
^Farandos, Nicholas M.; Yetisen, Ali K.; Monteiro, Michael J.; Lowe, Christopher R.; Yun, Seok Hyun (April 2015). "Contact lens sensors in ocular diagnostics". Advanced Healthcare Materials. 4 (6): 792–810. doi:10.1002/adhm.201400504. PMID25400274. S2CID35508652.