Corneal Thickness in Ocular Hypertension, Primary Open-angle Glaucoma, and Normal Tension Glaucoma

Abstract
INTRAOCULAR PRESSURE (IOP) is an important parameter in the diagnosis and follow-up of glaucoma. While Goldmann applanation tonometry is the preferred method of measurement of IOP, several factors, including corneal thickness, may influence its accuracy.1 A positive linear correlation between central corneal thickness (CCT) and IOP has been reported by Kruse Hansen and Ehlers.2,3 Intraocular pressure measured by applanation may be overestimated or underestimated in thick or thin corneas, respectively.