The Ocular Hypertension Treatment Study (OHTS) in 2002 evaluated risk factors for the development of glaucomatous damage in in patients who had high eye pressure but who have not developed glaucoma yet. When looking at multiple risk factors to determine who was more likely to develop glaucoma, thin central corneal thickness (CCT) as measured by ultrasonic pachymetry were found to be significant risk factors. Of all the risk factors, CCT provided the greatest predictive power for determining which patients will develop glaucomatous damage. Patients with a corneal thickness of 555μm or thinner were three-times more likely to develop POAG, compared with those who had a thickness of more than 588μm.

We use cornela pachymetry on all patientswho have risk to develop glaucoma and it is a simple, quick, painless test.