JP2011092598A5

JP2011092598A5 -

Info

Publication number: JP2011092598A5
Application number: JP2009251455A
Authority: JP
Filing date: 2009-10-30
Publication date: 2012-12-13
Anticipated expiration: 2029-10-30

Description

（１）被検者眼角膜に対し超音波ビームを非接触にて送信し，受信するための送受信部を有する超音波探触子と、前記探触子によって受信された角膜反射波の特性に基づいて被検者眼の眼圧を測定する演算部と、を備える非接触式超音波眼圧計において、
前記探触子からの出力信号に基づいて前記超音波ビームの伝搬経路における被検者眼の瞼／睫の有無を検知する第１検知手段と、
被検眼に向けて光を照射する光源と、前記光源による被検眼からの反射光を受光する受光素子と、を有し、前記受光素子からの出力信号に基づいて前記超音波ビームの伝搬経路における被検者眼の瞼／睫の有無を光学的に検知する第２検知手段と、を備えることを特徴とする。
（２）（１）の非接触式超音波眼圧計において、前記第１検知手段及び前記第２検知手段による両検知結果に基づいて被検者眼の開瞼状態が測定に十分か判定する開瞼状態判定手段を有し、
第１検知手段及び前記第２検知手段による両検知結果が瞼／睫無しの場合、開瞼状態が十分と判定し、前記第１検知手段及び前記第２検知手段による検知結果の少なくともいずれかにおいて瞼／睫有りの場合、開瞼状態が不十分と判定することを特徴とする。
（３）（２）の非接触式超音波眼圧計において、前記演算部は、前記開瞼状態判定手段によって開瞼状態が十分と判定されたときに取得された角膜反射波に基づく眼圧値を測定結果として出力することを特徴とする。
(1) An ultrasonic probe having a transmitting / receiving unit for transmitting and receiving an ultrasonic beam in a non-contact manner to a subject's ocular cornea, and a characteristic of a corneal reflected wave received by the probe In a non-contact ultrasonic tonometer comprising a calculation unit that measures the intraocular pressure of the subject's eye based on
First detection means for detecting the presence / absence of eyelids / eyelashes of the subject's eye in the propagation path of the ultrasonic beam based on an output signal from the probe;
A light source that emits light toward the eye to be examined; and a light receiving element that receives light reflected from the eye to be examined by the light source; and in a propagation path of the ultrasonic beam based on an output signal from the light receiving element And second detection means for optically detecting the presence / absence of eyelids / wrinkles of the subject's eyes.
(2) In the non-contact ultrasonic tonometer of (1), an opening for determining whether the eye open state of the subject eye is sufficient for measurement based on both detection results by the first detection means and the second detection means. Having heel state determination means,
When both detection results by the first detection means and the second detection means are wrinkles / no wrinkles, it is determined that the open state is sufficient, and at least one of the detection results by the first detection means and the second detection means In the case of wrinkles / wrinkles, it is determined that the open state is insufficient.
(3) In the non-contact ultrasonic tonometer according to (2), the calculation unit is an intraocular pressure value based on a corneal reflection wave acquired when the open state is determined to be sufficient by the open state determining unit. Is output as a measurement result.

Claims

被検者眼角膜に対し超音波ビームを非接触にて送信し，受信するための送受信部を有する超音波探触子と、前記探触子によって受信された角膜反射波の特性に基づいて被検者眼の眼圧を測定する演算部と、を備える非接触式超音波眼圧計において、
前記探触子からの出力信号に基づいて前記超音波ビームの伝搬経路における被検者眼の瞼／睫の有無を検知する第１検知手段と、
被検眼に向けて光を照射する光源と、前記光源による被検眼からの反射光を受光する受光素子と、を有し、前記受光素子からの出力信号に基づいて前記超音波ビームの伝搬経路における被検者眼の瞼／睫の有無を光学的に検知する第２検知手段と、を備えることを特徴とする非接触式超音波眼圧計。 An ultrasonic probe having a transmission / reception unit for transmitting and receiving an ultrasonic beam to the subject's eye cornea in a non-contact manner, and a subject based on the characteristics of the corneal reflection wave received by the probe. In a non-contact ultrasonic tonometer comprising an arithmetic unit that measures the intraocular pressure of the examiner's eye,
First detection means for detecting the presence / absence of eyelids / eyelashes of the subject's eye in the propagation path of the ultrasonic beam based on an output signal from the probe;
A light source that emits light toward the eye to be examined; and a light receiving element that receives light reflected from the eye to be examined by the light source; and in a propagation path of the ultrasonic beam based on an output signal from the light receiving element A non-contact ultrasonic tonometer, comprising: second detection means for optically detecting the presence or absence of wrinkles / wrinkles in the subject's eye.

請求項１の非接触式超音波眼圧計において、前記第１検知手段及び前記第２検知手段による両検知結果に基づいて被検者眼の開瞼状態が測定に十分か判定する開瞼状態判定手段を有し、
第１検知手段及び前記第２検知手段による両検知結果が瞼／睫無しの場合、開瞼状態が十分と判定し、前記第１検知手段及び前記第２検知手段による検知結果の少なくともいずれかにおいて瞼／睫有りの場合、開瞼状態が不十分と判定することを特徴とする非接触式超音波眼圧計。 2. The non-contact ultrasonic tonometer according to claim 1, wherein an open state determination for determining whether the open state of the subject's eye is sufficient for measurement based on both detection results by the first detection unit and the second detection unit. Having means,
When both detection results by the first detection means and the second detection means are wrinkles / no wrinkles, it is determined that the open state is sufficient, and at least one of the detection results by the first detection means and the second detection means A non-contact ultrasonic tonometer characterized by determining that the open state is insufficient when wrinkles / wrinkles are present.

請求項２の非接触式超音波眼圧計において、前記演算部は、前記開瞼状態判定手段によって開瞼状態が十分と判定されたときに取得された角膜反射波に基づく眼圧値を測定結果として出力することを特徴とする非接触式超音波眼圧計。 3. The non-contact ultrasonic tonometer according to claim 2, wherein the calculation unit measures an intraocular pressure value based on a corneal reflection wave acquired when the open state is determined to be sufficient by the open state determining unit. Output as a non-contact ultrasonic tonometer.