ANSI Standards ANSI Z80.10-2018 pdf free download – Ophthalmics – Ophthalmic Instruments – Tonometers ANSI Z80.10-2018 pdf free download - Ophthalmics – Ophthalmic Instruments – Tonometers. The requirements are met if not more than 5% of the paired differences between the referencetonometer reading and the test tonometer reading for each pressure... 02-20 Download Now