The value of screening for glaucoma with tonometry

Evaluation of screening schemes for eye disease in a primary care setting

“…12,13 It is of no use in the detection of other ocular disorders. Even though there are hand-held instruments that are easily taught to non-eye care professionals, the yield of tonometry does not justify their expense.…”

Treatment of Ocular Hypertension

“…Inconveniently, a few nonophthalmologists, such as David Eddy and the federal Office of Technology Assessment, questioned this conventional wisdom. 1 Fortunately, this forced us to dig deeper. Similar to Hamlet, who wrestled with the existential question, "To be or not to be," we now struggle with the dilemma of "whom to treat and whom to watch.…”

Intraocular pressure adjusted for central corneal thickness as a screening tool for open-angle glaucoma in an at-risk population

“…3 Numerous studies have demonstrated that tonometry is a poor screening test for glaucoma, with false-positive results of up to 70% and false-negative results reaching 90% when 21 mm Hg is used as a screening cut-off. [4][5][6] The Goldmann applanation tonometer, which remains the gold standard for measuring intraocular pressure (IOP), was recognized by its inventor to be susceptible to the thickness of the cornea being applanated. 7 As more is learned about the range of thicknesses of the human cornea and the first generation of iatrogenically thinned corneas reaches the glaucomatous age range, there has been more interest in the relationship between central corneal thickness (CCT) and true IOP.…”