A noncontact tonometer design method is presented

based on force balance principle and air static pressure technology.Overall structure of a non-contact tonometer design of intraocular pressure measurement module and frame type air cushion are introduced.The intraocular pressure measurement module includes nozzle

corneal alignment system and a corneal applanation photoelectric detecting system.Frame type air cushion adopts the orifice of aerostatic thrust bearing.The pressure distribution of external frame type air cushion

and test the nozzle and corneal photoelectric detecting system are calculated and simulated.The experimental results show that when distance between cornea and nozzle is rated distance L

nozzle gas can be flat corneas

photoelectric receiving pipe just receives maximum light.Compared with imported instruments

absolute error of measuring mean value is 1.3 mmHg

development of noncontact tonometer can realize noncontact measurement.