A system and a method for measuring pressure of an eye

A system for measuring pressure of an eye, the system comprising:

• an excitation source for producing a travelling air vortex ring and for directing the travelling air vortex ring towards the eye,
• a detector for detecting an interaction between the travelling air vortex ring and a surface of the eye, and
• a processing device for determining an estimate of the pressure of the eye based on the detected interaction between the travelling air vortex ring and the surface of the eye,
• wherein the excitation source comprises an air pressure pulse source and a flow guide for forming the travelling air vortex ring, and the air pressure pulse source comprises one of the following:
• i) a chamber connected to the flow guide and containing a spark gap for producing an air pressure pulse by an electric spark, ii) a chamber connected to the flow guide and containing chemical substances for producing an air pressure pulse by a chemical reaction between the chemical substances, iii) a laser source for producing a plasma expansion in a chamber connected to the flow guide to produce an air pressure pulse.