TY - CHAP M1 - Book, Section TI - Chapter 156. Intraocular Pressure Measurement (Tonometry) A1 - Reichman, Eric F. PY - 2013 T2 - Emergency Medicine Procedures, 2e AB - This chapter is designed to help the Emergency Physician know when it is necessary to measure intraocular pressure (IOP) and reviews several reliable methods of tonometry to measure IOP. There are multiple traumatic, pathologic, and postsurgical causes of altered IOP. The clinical signs and symptoms of elevated IOP are similar regardless of the etiology. Digital palpation is the oldest and simplest form of tonometry and remains useful in select situations. Schiøtz indentation tonometry is discussed for historical purposes but is still an accurate method to measure IOP. The nonportable Goldmann or applanation tonometer serves as the standard for measuring accurate IOP. It requires the use of a slit lamp and can be difficult to master. The handheld Perkins and Kowa tonometers are based on the same principle as the Goldmann and require experience to use effectively. The electronic Tono-Pen is best known to most Emergency Physicians and is discussed at length. It is useful to become comfortable with one or more of these techniques because early detection of abnormal IOP can prevent irreversible vision loss. SN - PB - The McGraw-Hill Companies CY - New York, NY Y2 - 2024/03/29 UR - accessemergencymedicine.mhmedical.com/content.aspx?aid=57716870 ER -