METHOD FOR REMOTE MEASUREMENT OF INTRAOCULAR PRESSURE Russian patent published in 2018 - IPC A61B3/16 

FIELD: medicine.

SUBSTANCE: invention relates to the field of medical technology and can be used in ophthalmology for remote measurement of intraocular pressure. In the method of remote measurement of intraocular pressure, which consists in exposing the eye to a pneumatic impulse with simultaneous exposure to electromagnetic radiation, converting the signal reflected from the eye into an autodyne signal, recording its power, digitizing the signal, determining the function of movement of the eye area, the amount of deformation of the eye and the acceleration of the movement of the shell, obtaining a calibration curve describing the dependence of pressure inside the eye model on the ratio of the amount of deformation of the eye to acceleration, determining the intraocular pressure by a calibration curve, according to the invention, microwave radiation is used as electromagnetic radiation; using a transmission line, they create a near-field zone of microwave radiation, whose flux value does not exceed 100 mcW/cm², and the eye is placed in the range of the near field at a distance from the microwave source not exceeding 1/10 of the transmission line wavelength; the impact of the pneumatic impulse is carried out perpendicular to the surface of the eye in the range of the near field, the function of the movement of the area of the eye Z(t) is determined from the relationship: Z(t)=K∙U(t), where U(t) is a digital autodyne signal; t is the time interval; K – coefficient, which is defined as the ratio: K=Δx/Δu, where ΔU is the change in the level of the autodyne signal when the distance Δx changes from the source of microwave radiation to the object.

EFFECT: technical problem is to increase the effectiveness of the contactless method of measuring intraocular pressure by increasing the accuracy and speed of measuring actions.

1 cl, 4 dwg