Screening for glaucoma usually involves measuring the pressure in the eye because elevated intraocular pressure is a major risk factor in glaucoma. Most methods of measuring the eye's pressure (tonometry) require numbing or anesthetizing the eye. The new Diaton does not require any numbing drops or touching the eye itself nor does it shoot a puff of air at your eye. It measures the eye's pressure comfortably through the eyelid and can be easily performed on children and elderly.