Abstract: A medical instrument includes a handpiece, a tank portion for housing a fluid, a plunger that changes a volume or pressure of an inside of the tank portion to suction the fluid into the tank portion or discharge the fluid from the tank portion, and an operating unit for operating the plunger. The handpiece includes a grip portion at the front end, and an operation member of the operating unit is disposed on a side of the grip portion.

Abstract: An ophthalmic imaging apparatus comprises: a laser emitter that includes an ultrashort pulse light source and emits a laser beam with a tunable wavelength in a predetermined visible wavelength range; an irradiation optical system that includes a scanner for scanning the laser beam two-dimensionally and irradiates the laser beam emitted from the laser emitter to a predetermined portion of an examinee's eye; a light receiving optical system including an apertured plate placed in a substantially conjugate position of a focal point of the laser beam on the predetermined portion and a light receiving element for receiving the laser beam reflected by the predetermined portion and passed through the apertured plate; a controller that controls the laser emitter to continuously change a central wavelength of the laser beam in a predetermined visible wavelength range and controls the scanner in association with the wavelength change of the laser beam to two-dimensionally change an irradiation position of the laser beam

Abstract: An ophthalmic imaging apparatus comprises: a laser emitter that includes an ultrashort pulse light source and emits a laser beam with a tunable wavelength in a predetermined visible wavelength range; an irradiation optical system that includes a scanner for scanning the laser beam two-dimensionally and irradiates the laser beam emitted from the laser emitter to a predetermined portion of an examinee's eye; a light receiving optical system including an apertured plate placed in a substantially conjugate position of a focal point of the laser beam on the predetermined portion and a light receiving element for receiving the laser beam reflected by the predetermined portion and passed through the apertured plate; a controller that controls the laser emitter to continuously change a central wavelength of the laser beam in a predetermined visible wavelength range and controls the scanner in association with the wavelength change of the laser beam to two-dimensionally change an irradiation position of the laser beam

Abstract: A corneal surgery apparatus capable of accurately measuring a three-dimensional corneal shape in a state of being subjected to corneal ablation. The apparatus has a unit including a laser source emitting a laser beam to bring about corneal ablation and a first optical system irradiating a cornea with the beam, a unit including a light source emitting measurement light with a wide wavelength band, a beam splitter dividing the light, a second optical system irradiating the cornea with one divided light, a movable reference mirror on an optical path of the other divided light and a photo-detector at a position photo-receiving interference light of the measurement light reflected by the cornea and the mirror, which obtains a three-dimensional corneal shape based on an interference light image, a unit obtaining corneal ablation data based on obtained corneal shape data, and a unit controlling the ablation unit based on the ablation data.

Abstract: An apparatus for observing a fundus of an eye of an examinee has an observation optical system having an image-pickup element which obtains a time-series fundus image, a display part which displays the obtained fundus image on its monitor as a moving image, a determination part which determines a standard fundus image based on the displayed image, a memory part which stores the determined image, a calculation part which digitizes the image based on a threshold luminance level to obtain a digitized image thereof, digitizes a present fundus image obtained after the determination of the standard image based on the threshold luminance level to obtain a digitized image thereof and compares the obtained digitized images two-dimensionally to obtain their positional difference, and a display control part for correcting a display position of the present fundus image based on the obtained positional difference to display the corrected image on the monitor.

Abstract: An ophthalmic apparatus which allows a patient to experience a manner of view after surgery (after correction) prior to surgery (prior to correction) and is capable of obtaining information required for performing refractive surgery suitable for the patient. The apparatus, which allows a patient to experience a manner of view after correction of optical aberration of a patient's eye, includes a target presenting optical system for presenting a target which the patient's eye is made to visually recognize, an aberration correcting optical system, which is arranged within an optical path of the target presenting optical system and has a light shaping optical unit which performs light shaping, for correcting the optical aberration of the patient's eye, an input unit which inputs data for correcting the optical aberration of the patient's eye, and a control unit which controls driving of the aberration correcting optical system based on the inputted correction data.

Abstract: A perimeter for examining a visual field condition of an examinee's eye, includes: a target presenting unit a response unit brain activity detecting unit which detects an activity condition of a visual cortex of the examinee; and an operation unit which determines if the response with the response unit with respect to presentation of the target is resulted from a fact that the examinee can perceive the target based on a detection result of the brain activity detecting unit and which obtains the visual field condition on the basis of the presentation condition of the target and the response result in consideration of the determination result of the brain activity detecting unit.

Abstract: An ophthalmic apparatus capable of guiding the visual axis of an eye to be examined, obtaining information about the visual axis, and performing measurement of optical characteristics of an eye such as wavefront aberration or laser refractive surgery with reference to the visual axis. The apparatus is provided with a target presenting optical system for guiding a visual axis of a patient's eye, and the presenting optical system has an optical axis of presentation and is provided with a first target and a second target located on the eye's side relative to the first target both on the optical axis of presentation, where the optical axis of presentation coincides with the visual axis when the eye fixates so as to make the first target coincide with the second target.

Abstract: A corneal surgery apparatus capable of accurately measuring a three-dimensional corneal shape in a state of being subjected to corneal ablation. The apparatus has a unit including a laser source emitting a laser beam to bring about corneal ablation and a first optical system irradiating a cornea with the beam, a unit including a light source emitting measurement light with a wide wavelength band, a beam splitter dividing the light, a second optical system irradiating the cornea with one divided light, a movable reference mirror on an optical path of the other divided light and a photo-detector at a position photo-receiving interference light of the measurement light reflected by the cornea and the mirror, which obtains a three-dimensional corneal shape based on an interference light image, a unit obtaining corneal ablation data based on obtained corneal shape data, and a unit controlling the ablation unit based on the ablation data.

Abstract: An ophthalmic surgery apparatus for observing an anterior portion of an eye, and an optical system for laser beam treatment to the eye. The apparatus has a moving device for moving the optical system relative to the eye, an illuminating device for illuminating an area of the anterior portion of the eye, a photoelectric transducing device having a two-dimensional light sensing plane for sensing distribution of light volume of the anterior portion of the eye, a pupil position sensing device for sensing the position of a pupil, and a control device for controlling the moving device based on sensed results.

Abstract: A perimeter for examining a visual field condition of an examinee's eye, includes: a target presenting unit which presents a stimulation target for examination to the eye, a presentation condition of the target including a presentation position of the target being variable; a response unit with which the examinee responds when the examinee can perceive the presented target; brain activity detecting unit which detects an activity condition of a visual cortex of the examinee; and an operation unit which determines if the response with the response unit with respect to presentation of the target is resulted from a fact that the examinee can perceive the target based on a detection result of the brain activity detecting unit and which obtains the visual field condition on the basis of the presentation condition of the target and the response result in consideration of the determination result of the brain activity detecting unit.

Abstract: An ophthalmic apparatus for examining an eye of a patient, comprises: a light projecting optical system for projecting examination light onto the eye, the optical system including: a light source; and a projection shape forming device which is electrically controlled to change a reflecting area of a reflecting surface or a transmitting area of a transmitting surface and is arranged to reflect or transmit the examination light emitted from the light source while forming a projection shape of the examination light into a desired shape so that the examination light of the desired shape is projected onto the eye; and a selection unit for selecting the projection shape of the examination light; and a control part which drivingly controls the forming device based on the selected projection shape.

Abstract: An ophthalmic laser surgical apparatus includes a laser irradiation optical system which irradiates a laser beam which causes ablation on tissue of an eye; a sound collecting unit which receives a shock sound which is generated during the ablation of the eye tissue; and a monitor unit which is connected to the sound collecting unit and detects a degree of dryness of the eye tissue during the ablation based on a sound pressure level of a sound signal from the sound collecting unit.

Abstract: An apparatus for observing a fundus of an eye of an examinee has an observation optical system having an image-pickup element which obtains a time-series fundus image, a display part which displays the obtained fundus image on its monitor as a moving image, a determination part which determines a standard fundus image based on the displayed image, a memory part which stores the determined image, a calculation part which digitizes the image based on a threshold luminance level to obtain a digitized image thereof, digitizes a present fundus image obtained after the determination of the standard image based on the threshold luminance level to obtain a digitized image thereof and compares the obtained digitized images two-dimensionally to obtain their positional difference, and a display control part for correcting a display position of the present fundus image based on the obtained positional difference to display the corrected image on the monitor.

Abstract: An apparatus for examining an anterior-segment of an eye, capable of grasping each part of the anterior-segment of the eye three-dimensionally and the condition of the center of its pupil accurately.

Abstract: An ophthalmic apparatus which allows a patient to experience a manner of view after surgery (after correction) prior to surgery (prior to correction) and is capable of obtaining information required for performing refractive surgery suitable for the patient. The apparatus, which allows a patient to experience a manner of view after correction of optical aberration of a patient's eye, includes a target presenting optical system for presenting a target which the patient's eye is made to visually recognize, an aberration correcting optical system, which is arranged within an optical path of the target presenting optical system and has a light shaping optical unit which performs light shaping, for correcting the optical aberration of the patient's eye, an input unit which inputs data for correcting the optical aberration of the patient's eye, and a control unit which controls driving of the aberration correcting optical system based on the inputted correction data.

Abstract: An ophthalmic laser surgical apparatus includes a laser irradiation optical system which irradiates a laser beam which causes ablation on tissue of an eye; a sound collecting unit which receives a shock sound which is generated during the ablation of the eye tissue; and a monitor unit which is connected to the sound collecting unit and detects a degree of dryness of the eye tissue during the ablation based on a sound pressure level of a sound signal from the sound collecting unit.

Abstract: The present invention intends to provide an ophthalmic apparatus which enables an examiner to diagnose a patient with cataract and the like in the early stage, and which can be used even for a screening examination and the like. The ophthalmic apparatus comprises an illumination optical system for having illumination light enter an inside of an eye to be examined so that the light scattered and reflected on a fundus of the eye illuminates an anterior part of the eye and a photographing optical system having an imaging spectroscope for obtaining an image including spectral information, for photographing a retroillumination image of the illuminated anterior part of the eye with the imaging spectroscope.

Abstract: An ophthalmic apparatus capable of guiding the visual axis of an eye to be examined, obtaining information about the visual axis, and performing measurement of optical characteristics of an eye such as wavefront aberration or laser refractive surgery with reference to the visual axis. The apparatus is provided with a target presenting optical system for guiding a visual axis of a patient's eye, and the presenting optical system has an optical axis of presentation and is provided with a first target and a second target located on the eye's side relative to the first target both on the optical axis of presentation, where the optical axis of presentation coincides with the visual axis when the eye fixates so as to make the first target coincide with the second target.

Abstract: An operation apparatus for ablating the cornea by laser beam and correcting ametropia of the eye comprising a diaphragm with variable aperture, which is disposed on the optical path along which the laser beam is irradiated on the cornea, a shading member for shading the aperture of the diaphragm in the meridian diameter direction of the aperture, which is capable of varying the shading area to the aperture of the diaphragm by changing the turning angle to the optical path, in which aperture diameter of the diaphragm and variation in scope of the shading area by the shading member being controlled, and a beam rotator disposed in the eye side to the diaphragm rotates the laser beam passed through the aperture of the diaphragm about the optical path, whereby the cornea is ablated thicker at the periphery than at the center so as to correct hypermetropia.