The only non-corneal and non-contact tonometer Diaton now enables optometrists and other eyecare and healthcare professionals who provide primary vision care to test intraocular pressure (IOP) for glaucoma Through the EYELID. Quick and painless, handheld Diaton pen-like tonometer readings are not affected by contact lenses or other corneal properties. (1888PressRelease) June 30, 2011 - BiCOM Inc.,