Abstract
To improve the prospect of self-examining ophthalmic devices, we have previously developed a handheld 3-in-1 device consisting of a non-contact tonometer, visual acuity tester, and slit lamp biomicroscope [1]. For validating the tonometer measurement principle, we have developed an artificial cornea and manometer test stand using different silicone materials to study the deflection of the cornea as a function of the intraocular pressure (IOP) inside the human eye. Young’s moduli for all materials were evaluated and compared with that of human cornea. The intraocular pressure was varied between 0 and 40 mmHg and tested with both a commercial and the 3-in-1 device’s tonometer. Results from both devices validate the use of such a phantom eye apparatus to test similar ophthalmic instrumentation before clinical testing on humans.
