公开(公告)号：WO2003015624A1

公开(公告)日：2003-02-27

申请号：PCT/GB2002/003729

申请日：2002-08-13

Applicant: KEELER LIMITED ,  MATTHEWS, James, Robert, Arnold ,  FISHER, John, Horace ,  MERRITT, Paul, Antony ,  ATKINS, Neil, Anthony ,  GRAHAM, David, Philip

Inventor： MATTHEWS, James, Robert, Arnold ,  FISHER, John, Horace ,  MERRITT, Paul, Antony ,  ATKINS, Neil, Anthony ,  GRAHAM, David, Philip

IPC: A61B3/16

CPC classification number: A61B3/154 ,  A61B3/165

Abstract: A puff tonometer includes two light sources located at diametrically opposite points, preferably equidistant from the optical axis of the objective lens assembly of the tonometer. The sources are arranged to direct light forwardly of the tonometer such that, in use, and when positioned close to a patient's eye under test, light from the two sources, after reflection by the anterior corneal surface of the eye under test, will be imaged by the objective lens assembly of the tonometer, to appear as two small areas of light in the field of view. The spacing and position of the two supplementary light sources relative to the objective lens assembly are selected so that as the tonometer is moved towards an eye under test and begins to approach the distance from the eye at which the tonometer will automatically discharge a puff of air towards the eye, the light reflected by the corneal surface will appear as two closely spaced spots of light which, with continued movement of the unit towards the eye, will begin to move away from each other, and will be replaced by two segments of light reflected from the corneal surface of the eye, which reflected light also becomes focused onto an array of photoelectric detectors as the unit approaches the critical firing distance from the eye. The light from the two supplementary light sources is coloured and is distinct from the light used to form the two segments and when in focus trigger the air discharge. If the latter light is red, the light from each of the two supplementary light sources may be green or blue for example. When equidistant the position of the two spots of light relative to the centre of the field of view readily indicates to the user whether the unit is centred on the eye. A resiliently deformable extension may be fitted to the tonometer nozzle whose natural length is greater than the critical distance of the front of the nozzle from the eye at which an air pulse is released, and which can be pushed against the patient's face and thereby reduced in length until the critical distance is reached.

Abstract translation: 吹气眼压计包括位于径向相对的点处的两个光源，优选地与眼压计的物镜组件的光轴等距。 来源设置为将眼睛前方的光引导到使用中，并且当位于靠近患者眼睛的位置时，来自两个源的光在被测试的眼睛的前角膜表面反射之后将被成像 通过眼压计的物镜组件，在视野中出现两个小面积的光。 选择两个补充光源相对于物镜组件的间距和位置，使得当眼压计朝向被测眼睛移动时，开始接近眼睛距眼球计量器将自动排出空气的距离 朝向眼睛，由角膜表面反射的光将显示为两个紧密相邻的光点，随着单元朝向眼睛的持续移动，它们将开始彼此远离，并将被两段光线所代替 从眼睛的角膜表面反射，该反射光也随着该单元接近眼睛的临界射击距离而聚焦在光电探测器阵列上。 来自两个补充光源的光被着色，并且与用于形成两个部分的光不同，并且当处于焦点时触发空气放电。 如果后一个光是红色的，则来自两个辅助光源中的每一个的光可以是例如绿色或蓝色。 当等距时，两个光点相对于视野的中心的位置可以向用户显示该单元是否居中在眼睛上。 可弹性变形的延伸部可以安装到眼压计喷嘴上，其天然长度大于喷嘴的前部与释放空气脉冲的眼睛的临界距离，并且可以将其推压抵靠患者的面部，从而减小 长度直到达到临界距离。

公开(公告)号：WO2003015620A2

公开(公告)日：2003-02-27

申请号：PCT/GB2002/003733

申请日：2002-08-13

Applicant: KEELER LIMITED ,  MATTHEWS, James, Robert, Arnold ,  FISHER, John, Horace ,  MERRITT, Paul, Antony

Inventor： MATTHEWS, James, Robert, Arnold ,  FISHER, John, Horace ,  MERRITT, Paul, Antony

IPC: A61B3/00

CPC classification number: A61B3/154 ,  A61B3/165

Abstract: A puff tonometer which includes an object at a point in the optical path of light from a source of light in the tonometer, typically near to the source, such that an in-focus image of the object will be formed in the user's field of view when the tonometer is at the critical distance from an eye under test at which the automatic air pulse generating means will be triggered by light reflected from the eye forming an in focus image of a mask on a plurality of photoelectric sensors. A second object may be located in the same region of the tonometer as the first object, but in a plane which is spaced from the plane containing the first object, whereby its image will come into focus in the field of view just before the image of the first object comes into focus, as the unit is moved slowly towards the patient's eye. A third object visually distinguishable from both the first and the second objects may be located in a third plane spaced from the plane containing the first object, whereby its image will come into focus if the unit is moved closer to the patient's eye than said critical distance. Two supplementary light sources may be provided on opposite sides of the puff tube of the tonometer to project two narrow beams of light towards an eye under test, to appear as two spots of light in the field of view ahead of when the in focus image of the object(s) will be seen. Typically the latter is formed using red light and the two supplementary light sources produce green light. A longer focal length eyepiece may be employed to allow an image of the eye to be seen from a distance to assist in initially lining up the tonometer with the patient's face.

Abstract translation: 一种吹气眼压计，其包括在来自眼压计中的来自光源的光的光路中的点处的物体，通常靠近源，使得在用户的视野中将形成物体的对焦图像 当眼压计处于与被测眼睛的临界距离时，自动空气脉冲发生装置将由从眼睛反射的光触发，在多个光电传感器上形成掩模的聚焦图像。 第二物体可以位于与第一物体的眼压计相同的区域中，但是位于与包含第一物体的平面间隔开的平面中，从而其图像将在图像之前的视场中聚焦 第一个对象成为焦点，因为单位慢慢地朝着病人的眼睛移动。 与第一和第二物体可视地区分的第三物体可以位于与包含第一物体的平面间隔开的第三平面中，从而如果该单元被移动得比所述临界距离更靠近病人的眼睛，其图像将变为对焦 。 可以在眼压计的鼓泡管的相对侧上设置两个辅助光源，以将两束窄光束朝向被测眼睛投射，以便在焦点图像的前方的视野中出现两个光点 将会看到对象。 通常，后者使用红光形成，并且两个辅助光源产生绿光。 可以使用更长的焦距目镜，以允许从远处看到眼睛的图像，以帮助最初用患者的脸部排列眼压计。

公开(公告)号：WO03015621A3

公开(公告)日：2003-07-31

申请号：PCT/GB0203758

申请日：2002-08-13

Applicant: KEELER LTD ,  MATTHEWS JAMES ROBERT ARNOLD ,  FISHER JOHN HORACE ,  MERRITT PAUL ANTONY

Inventor： MATTHEWS JAMES ROBERT ARNOLD ,  FISHER JOHN HORACE ,  MERRITT PAUL ANTONY

IPC: A61B3/15 ,  A61B3/16

CPC classification number: A61B3/154 ,  A61B3/165

Abstract: A puff tonometer in which the eyepiece and objective lens form a simple telescope which is capable of presenting to the user an in-focus image of distant objects, as well as an image of light reflected by an eye under test at close quarters when viewed through the eyepiece. A Pechan-Schmidt prism inverts the image and presents to the user an image of the patient's eye which is correctly oriented and handed in a vertical and horizontal sense. The focal length of the eyepiece typically lies in the range 62-100mm, preferably 80mm.

Abstract translation: 目镜和物镜构成一个简单的望远镜，能够向用户呈现远处物体的焦点图像，以及当通过观察时通过被测眼睛在近距离处反射的光线的图像 目镜。 Pechan-Schmidt棱镜反转图像并向用户呈现患者眼睛的图像，该图像被正确地定向并以垂直和水平方向递交。 目镜的焦距一般在62-100mm范围内，最好在80mm范围内。

公开(公告)号：WO2003015620A3

公开(公告)日：2003-02-27

申请号：PCT/GB2002/003733

申请日：2002-08-13

Applicant: KEELER LIMITED ,  MATTHEWS, James, Robert, Arnold ,  FISHER, John, Horace ,  MERRITT, Paul, Antony

Inventor： MATTHEWS, James, Robert, Arnold ,  FISHER, John, Horace ,  MERRITT, Paul, Antony

IPC: A61B3/16

Abstract: A puff tonometer which includes an object at a point in the optical path of light from a source of light in the tonometer, typically near to the source, such that an in-focus image of the object will be formed in the user's field of view when the tonometer is at the critical distance from an eye under test at which the automatic air pulse generating means will be triggered by light reflected from the eye forming an in focus image of a mask on a plurality of photoelectric sensors. A second object may be located in the same region of the tonometer as the first object, but in a plane which is spaced from the plane containing the first object, whereby its image will come into focus in the field of view just before the image of the first object comes into focus, as the unit is moved slowly towards the patient's eye. A third object visually distinguishable from both the first and the second objects may be located in a third plane spaced from the plane containing the first object, whereby its image will come into focus if the unit is moved closer to the patient's eye than said critical distance. Two supplementary light sources may be provided on opposite sides of the puff tube of the tonometer to project two narrow beams of light towards an eye under test, to appear as two spots of light in the field of view ahead of when the in focus image of the object(s) will be seen. Typically the latter is formed using red light and the two supplementary light sources produce green light. A longer focal length eyepiece may be employed to allow an image of the eye to be seen from a distance to assist in initially lining up the tonometer with the patient's face.

公开(公告)号：WO1988003384A1

公开(公告)日：1988-05-19

申请号：PCT/GB1987000777

申请日：1987-11-04

Applicant: KEELER LIMITED ,  MATTHEWS, James, Robert, Arnold ,  LITTLE, Mervyn, Aubrey ,  FISHER, John

Inventor： KEELER LIMITED

IPC: A61B03/16

CPC classification number: A61B3/165

Abstract: A tonometer for measuring the intra-ocular pressure of an eye in which a pulse of fluid is projected towards the cornea of the eye to distort the corneal surface by the pressure of the pulse, thedistortion in the corneal surface being detected by a change in the reflection of light directed onto the cornea. A constant volume chamber (96) forms part of the fluid delivery system, with inlet means (71) by which fluid under pressure can be supplied to the chamber when a fluid pulse is required. A lens assembly (110, 112) is fixed in the chamber wall for directing light toward an eye under test, and a tube (108) extends coaxially through the lens assembly to protrude internally into the chamber, where it is closed-off at (114) but includes a plurality of apertures (118) in the internally protruding wall section to permit the controlled passage of fluid from the chamber into the tube.

Abstract translation: 一种用于测量眼睛的眼内压的眼压计，其中流体的脉冲朝向眼睛的角膜投射以通过脉冲的压力使角膜表面变形，角膜表面中的失真通过 将光反射到角膜上。 恒定容积室（96）形成流体输送系统的一部分，具有入口装置（71），当需要流体脉冲时，通过该入口装置（71）可以将压力下的流体供应到腔室。 透镜组件（110,112）固定在室壁中，用于将光引导到被测试的眼睛，并且管（108）同轴地延伸穿过透镜组件以在内部突出到腔室中，其中它在（ 114），但是在内部突出的壁部分中包括多个孔（118），以允许流体从腔室受控地通过到管中。

公开(公告)号：WO2007104914A1

公开(公告)日：2007-09-20

申请号：PCT/GB2007/000503

申请日：2007-02-14

Applicant: KEELER LIMITED ,  CHURCH, Kelvyn ,  CHURCH, Stephen ,  MATTHEWS, James, Robert, Arnold ,  VANARSDALE, Eugene, R.

Inventor： CHURCH, Kelvyn ,  CHURCH, Stephen ,  MATTHEWS, James, Robert, Arnold ,  VANARSDALE, Eugene, R.

IPC: A61B3/13

CPC classification number: A61B3/132 ,  A61B3/0008

Abstract: A binocular indirect ophthalmoscope has a light source for producing an illumination beam and an illumination mirror (7) for directing the illumination beam to an eye to be viewed. The ophthalmoscope also has viewing optics including left-hand and right-hand eyepieces (12,13) and an optical splitter (9,10) for directing light along left-hand and right-hand viewing paths to the two eyepieces. An aperture holder (20) is pivotally mounted in a frame (3,5,6) of the ophthalmoscope and adjusts the size of the illumination beam, under the control of a manually rotatable control knob (24) . The movement of the aperture holder is transmitted, by means of mechanical linkage, to a moveable carriage (15) on which is mounted both the optical splitter and the illumination mirror, so that when the user moves the control knob to adjust the size of the illumination beam the optical splitter and the illumination mirror are also adjusted in position with respect to the ophthalmoscope frame .

Abstract translation: 双眼间接检眼镜具有用于产生照明光束的光源和用于将照明光束引导到眼睛以观察的照明镜（7）。 检眼镜还具有观察光学器件，包括左手和右眼目镜（12,13）和用于将光线沿着左眼和右手观察路径引导到两个目镜的分光器（9,10）。 孔眼保持器（20）枢转地安装在检眼镜的框架（3,5,6）中，并且在手动旋转的控制旋钮（24）的控制下调节照明光束的尺寸。 孔保持器的运动通过机械连杆传递到安装有分光器和照明反射镜两者的可移动滑架（15），使得当用户移动控制旋钮以调整尺寸 光分束器和照明反射镜的照明光束也相对于检眼镜框架调整到适当的位置。

公开(公告)号：WO2005020804A1

公开(公告)日：2005-03-10

申请号：PCT/GB2004/003630

申请日：2004-08-25

Applicant: KEELER LIMITED ,  BURROWS, Clive, Harold, Thomas ,  CHURCH, Kelvyn ,  CHURCH, Stephen ,  FREEMAN, David, Ernest, Lane ,  MATTHEWS, James, Robert, Arnold

Inventor： BURROWS, Clive, Harold, Thomas ,  CHURCH, Kelvyn ,  CHURCH, Stephen ,  FREEMAN, David, Ernest, Lane ,  MATTHEWS, James, Robert, Arnold

IPC: A61B3/15

CPC classification number: A61B3/156

Abstract: An ophthalmoscope has illuminating optics (10) for projecting a beam of light into an eye under examination and imaging optics (14) for creating an image of said eye for viewing by a user. The imaging optics comprises an objective lens system (16) and an eye piece lens system (20). Two corneal reflex stops (138 and 148) are positioned one on either side of the corneal image formed by the objective lens system. The stops block reflections from the cornea of the eye under examination over a range of distances of the ophthalmoscope from the eye. The use of the two corneal reflex stops results in the precise positioning of the ophthalmoscope relative to the eye under examination not being critical to the blocking of the corneal reflex.

Abstract translation: 检眼镜具有用于将光束投射到被检查的眼睛中的照明光学器件（10）和用于创建用于用户观看的所述眼睛的图像的成像光学器件（14）。 成像光学元件包括物镜系统（16）和眼镜透镜系统（20）。 两个角膜反射停止（138和148）位于由物镜系统形成的角膜图像的任一侧上。 止血块阻止了眼睛从眼睛的距离范围内的眼睛的角膜的反射。 使用两个角膜反射停止导致检眼镜相对于检查眼睛的精确定位不对阻塞角膜反射至关重要。

公开(公告)号：WO2003015621A2

公开(公告)日：2003-02-27

申请号：PCT/GB2002/003758

申请日：2002-08-13

Applicant: KEELER LIMITED ,  MATTHEWS, James, Robert, Arnold ,  FISHER, John, Horace ,  MERRITT, Paul, Antony

Inventor： MATTHEWS, James, Robert, Arnold ,  FISHER, John, Horace ,  MERRITT, Paul, Antony

IPC: A61B3/00

CPC classification number: A61B3/154 ,  A61B3/165

Abstract: A puff tonometer in which the eyepiece and objective lens form a simple telescope which is capable of presenting to the user an in-focus image of distant objects, as well as an image of light reflected by an eye under test at close quarters when viewed through the eyepiece. A Pechan-Schmidt prism inverts the image and presents to the user an image of the patient's eye which is correctly oriented and handed in a vertical and horizontal sense. The focal length of the eyepiece typically lies in the range 62-100mm, preferably 80mm.

Abstract translation: 一种吹气眼压计，其中目镜和物镜形成简单的望远镜，其能够向使用者呈现遥远物体的对焦图像，以及在近距离观察时被被测眼睛反射的光的图像，当通过 目镜。 Pechan-Schmidt棱镜反转图像并向用户呈现正确定向并且具有垂直和水平方向的患者眼睛的图像。 目镜的焦距通常在62-100mm，优选80mm的范围内。