Method and arrangement for eye measurements

An intraocular pressure measurement method for measuring eye pressure, the method comprising:

• producing an excitation pressure pulse formed by nonlinear waves in which a principle of superposition does not hold, and transmitted by air to a surface of an eye to generate at least one surface wave for an eye measurement;
• detecting, based on light reflected off the eye, at least one surface wave at a distance from the surface to extract eye surface wave information;
• and
• determining the eye pressure based on said surface wave information.

An intraocular pressure measurement arrangement for measuring eye pressure, the arrangement comprising:

• at least one source configured to produce an excitation pressure pulse formed by nonlinear waves in which a principle of superposition does not hold, and transmitted by air to a surface of an eye to generate at least one surface wave for an eye measurement;
• a detector configured to detect, based on light reflected off the eye, the at least one surface wave at a distance from the surface to extract surface wave information;
• and
• one or more processors configured to determine an eye pressure based on said surface wave information.