Optical apparatus and operating method thereof

An optical apparatus, for non-contact inspection and measurement of a cornea of an eye, the optical apparatus comprising:

• an air-puff module, for generating an air pressure to a surface of the cornea according a blow pattern comprising duration of the air pressure, a magnitude of the air pressure and a frequency of the air pressure to cause a deformation of the cornea;
• a central processing module;
• and
• an optical measurement module, comprising:
• a first unit, for measuring an intraocular pressure (IOP) of the eye according to the deformation of the cornea, wherein the first unit comprises an optical emitter and an optical receiver;
• before the cornea is deformed, the optical emitter is configured to emit a first sensing light to the surface of the un-deformed cornea and the optical receiver is configured to receive a first reflected light reflected by the un-deformed cornea;
• after the cornea is deformed, the optical emitter is configured to emit a second sensing light to the surface of the deformed cornea and the optical receiver receives a second reflected light reflected by the deformed cornea, the central processing module is configured to obtain a signal variation between the first reflected light and the second reflected light and link the signal variation with the duration of the air pressure, the magnitude of the air pressure and the frequency of the air pressure of the blow pattern to evaluate the intraocular pressure (IOP) of the eye;
• and
• a second unit, for measuring properties of the cornea in an optical interference way;
• wherein the central processing module is coupled to the first unit and the second unit, the central processing module for receiving and processing the intraocular pressure and the properties of the cornea to provide a result.