Abstract: An ophthalmic measurement apparatus capable of outputting correction data (objective values) for a patient's eye as approximate as possible to subjective values includes an optical system for projecting a measurement target onto a fundus and detecting an image of the target reflected therefrom using a photoelectric element so as to obtain measurement data on eye refractive power distribution or wavefront aberration, an optical system for photographing an anterior-segment including a pupil using an image-pickup element, a device which detects a size of a pupil area by image processing, and a device which obtains a spherical power, an astigmatic power, and an astigmatic axial angle based on the data within a given area smaller than the pupil area when the detected size is larger than a reference size, and obtains the three values based on the data within the pupil area when the detected size is smaller than the reference size.

Abstract: An ophthalmic apparatus capable of easily checking opacity of a crystalline lens, and more appropriately evaluating a measurement result on eye refractive power distribution or wavefront aberration, which includes a measurement optical system for projecting measurement light onto a fundus of an examinee's eye and photo-receiving the measurement light reflected from the fundus so as to measure eye refractive power distribution or wavefront aberration, an illumination for an anterior segment, a first image-pickup optical system for picking up an image of the anterior segment, a projection optical system for projecting photographing light onto the fundus, a second image-pickup optical system for photo-receiving the photographing light so as to pick up a diaphanoscopic image, a monitor, a calculation part for obtaining a mapping image based on a result of the measurement, and a control part for displaying the mapping image and the diaphanoscopic image on one screen of the monitor.

Abstract: An ophthalmic measurement apparatus capable of outputting correction data (objective values) for a patient's eye as approximate as possible to subjective values includes an optical system for projecting a measurement target onto a fundus and detecting an image of the target reflected therefrom using a photoelectric element so as to obtain measurement data on eye refractive power distribution or wavefront aberration, an optical system for photographing an anterior-segment including a pupil using an image-pickup element, a device which detects a size of a pupil area by image processing, and a device which obtains a spherical power, an astigmatic power, and an astigmatic axial angle based on the data within a given area smaller than the pupil area when the detected size is larger than a reference size, and obtains the three values based on the data within the pupil area when the detected size is smaller than the reference size.

Abstract: An ophthalmic apparatus and a method for calculating internal refractive power distribution of an eye of an examinee, which allow easily evaluating refractive power distribution of a crystalline lens, an intraocular lens and the like. The ophthalmic apparatus has a unit which inputs respective measurement data on corneal refractive power distribution and whole refractive power distribution of the eye, the respective distribution referring to a reference axis, and a unit which obtains the internal refractive power distribution of the eye referring to the reference axis based on the inputted respective measurement data, obtains a prism component in the internal refractive power distribution with respect to the reference axis, and obtains internal refractive power distribution of the eye where the prism component is removed.

Abstract: A corneal topography analysis system includes: an input unit for inputting corneal curvature data; and an analysis unit that determines plural indexes characterizing topography of the cornea based on the input corneal curvature data, the analysis unit further judges corneal topography from features inherent in predetermined classifications of corneal topography using the determined indexes and a neural network so as to judge at least one of normal cornea, myopic refractive surgery, hyperopic refractive surgery, corneal astigmatism, penetrating keratoplasty, keratoconus, keratoconus suspect, pellucid marginal degeneration, or other classification of corneal topography.

Abstract: An ophthalmic apparatus capable of easily checking opacity of a crystalline lens, and more appropriately evaluating a measurement result on eye refractive power distribution or wavefront aberration, which includes a measurement optical system for projecting measurement light onto a fundus of an examinee's eye and photo-receiving the measurement light reflected from the fundus so as to measure eye refractive power distribution or wavefront aberration, an illumination for an anterior segment, a first image-pickup optical system for picking up an image of the anterior segment, a projection optical system for projecting photographing light onto the fundus, a second image-pickup optical system for photo-receiving the photographing light so as to pick up a diaphanoscopic image, a monitor, a calculation part for obtaining a mapping image based on a result of the measurement, and a control part for displaying the mapping image and the diaphanoscopic image on one screen of the monitor.

Abstract: An ophthalmic measurement apparatus capable of obtaining refractive power containing a skew ray component, and further obtaining wavefront aberration from the refractive power with more ease and higher precision includes an optical system projecting slit light bundles onto a fundus of an examinee's eye and scanning the light bundles in predetermined first and second directions, an optical system with photodetectors placed in positions approximately conjugate with a cornea of the eye and placed in at least one meridian direction orthogonal to an optical axis of the photo-receiving optical system, and an arithmetic part obtaining, based on signals indicating phase differences from one of the photodetectors when photo-receiving the light bundles scanned in the first and second directions, refractive power in two directions at a corneal position corresponding to the photodetector position, and further obtains at least one of refractive power and a wavefront inclination by vector-synthesizing the obtained refracti

Abstract: An ophthalmic apparatus for obtaining differences between the pupil positions in photopia and scotopia accurately, and a corneal surgery apparatus for ablating a cornea of an eye by laser beam irradiation allowing for the differences. The ophthalmic apparatus has devices for inputting a first image of an anterior eye segment in photopia and a second one in scotopia, for obtaining pupil information in the images and differences between the pupil information in photopia and that in scotopia, and for outputting the differences. The corneal surgery apparatus has devices for irradiating the cornea with a laser beam, for aligning an irradiation position with the eye, for inputting differences between the pupil positions in photopia and scotopia, for detecting the photopic pupil position, for obtaining an alignment position of the laser beam based on the pupil position and the positional difference, and for controlling the alignment device based on the alignment position.

Abstract: An ophthalmic apparatus comprising an optometry device for examining or measuring a patient's eye to obtain measurement data on the eye, a photographing device for photographing the eye, an identification code generating device for extracting a characteristic, which is inherently unique to the eye, from an image of the eye photographed by the photographing device and generating an identification code for the use of eye identification based on the extracted characteristic, and an output device for outputting obtained measurement data in association with the generated identification code.

Abstract: A method and an apparatus for obtaining irradiation intensity of a laser beam, and a laser beam irradiation apparatus that enable obtaining an irradiation intensity distribution of a laser beam easily, and attaining more accurate ablation. The method for obtaining an irradiation intensity of a laser beam has the steps of inputting an intensity of fluorescence emitted from a fluorescent glass, the fluorescence intensity being obtained when the laser beam is irradiated onto the fluorescent glass which emits the fluorescence by irradiation of the laser beam with an ablation area of a size required for processing an object to be processed, and obtaining an irradiation intensity distribution of the laser beam in the ablation area based on the inputted fluorescence intensity.

Abstract: An ophthalmic measurement apparatus capable of obtaining refractive power containing a skew ray component, and further obtaining wavefront aberration from the refractive power with more ease and higher precision includes an optical system projecting slit light bundles onto a fundus of an examinee's eye and scanning the light bundles in predetermined first and second directions, an optical system with photodetectors placed in positions approximately conjugate with a cornea of the eye and placed in at least one meridian direction orthogonal to an optical axis of the photo-receiving optical system, and an arithmetic part obtaining, based on signals indicating phase differences from one of the photodetectors when photo-receiving the light bundles scanned in the first and second directions, refractive power in two directions at a corneal position corresponding to the photodetector position, and further obtains at least one of refractive power and a wavefront inclination by vector-synthesizing the obtained refracti

Abstract: An ophthalmic apparatus and a method for calculating internal refractive power distribution of an eye of an examinee, which allow easily evaluating refractive power distribution of a crystalline lens, an intraocular lens and the like. The ophthalmic apparatus has a unit which inputs respective measurement data on corneal refractive power distribution and whole refractive power distribution of the eye, the respective distribution referring to a reference axis, and a unit which obtains the internal refractive power distribution of the eye referring to the reference axis based on the inputted respective measurement data, obtains a prism component in the internal refractive power distribution with respect to the reference axis, and obtains internal refractive power distribution of the eye where the prism component is removed.

Abstract: A corneal topography analysis system includes: an input unit for inputting corneal curvature data; and an analysis unit that determines plural indexes characterizing topography of the cornea based on the input corneal curvature data, the analysis unit further judges corneal topography from features inherent in predetermined classifications of corneal topography using the determined indexes and a neural network so as to judge at least one of normal cornea, myopic refractive surgery, hyperopic refractive surgery, corneal astigmatism, penetrating keratoplasty, keratoconus, keratoconus suspect, pellucid marginal degeneration, or other classification of corneal topography.

Abstract: A method and an apparatus for obtaining irradiation intensity of a laser beam, and a laser beam irradiation apparatus that enable obtaining an irradiation intensity distribution of a laser beam easily, and attaining more accurate ablation. The method for obtaining an irradiation intensity of a laser beam has the steps of inputting an intensity of fluorescence emitted from a fluorescent glass, the fluorescence intensity being obtained when the laser beam is irradiated onto the fluorescent glass which emits the fluorescence by irradiation of the laser beam with an ablation area of a size required for processing an object to be processed, and obtaining an irradiation intensity distribution of the laser beam in the ablation area based on the inputted fluorescence intensity.

Abstract: A laser surgery apparatus is provided to minimize a burden on a patient and to obtain a good result of a surgical operation. The laser surgery apparatus for performing surgery on a patient's eye by irradiating a laser beam thereonto comprises an irradiation device provided with an irradiation optical system for irradiating the laser beam onto the patient's eye, a control device for controlling the irradiation device, and an informing device for informing the patient of at least either a first period of a laser irradiation period or a second period of the laser irradiation period or both.

Abstract: An ophthalmic apparatus comprising a first input unit with which plural measurement data concerning an eye to be examined are inputted, a second input unit with which images of the eye including an anterior eye segment are inputted, each of the image is photographed at the time of measuring each of the inputted measurement data, and a calculation and control unit which detects and corrects two-dimensional displacement or deviation between each of the measurement data based on each of the inputted images of the eye.

Abstract: An ophthalmic apparatus for obtaining differences between the pupil positions in photopia and scotopia accurately, and a corneal surgery apparatus for ablating a cornea of an eye by laser beam irradiation allowing for the differences. The ophthalmic apparatus has devices for inputting a first image of an anterior eye segment in photopia and a second one in scotopia, for obtaining pupil information in the images and differences between the pupil information in photopia and that in scotopia, and for outputting the differences. The corneal surgery apparatus has devices for irradiating the cornea with a laser beam, for aligning an irradiation position with the eye, for inputting differences between the pupil positions in photopia and scotopia, for detecting the photopic pupil position, for obtaining an alignment position of the laser beam based on the pupil position and the positional difference, and for controlling the alignment device based on the alignment position.

Abstract: An ophthalmic apparatus comprising an input unit with which data on eye refractive power distribution of an eye to be examined at far vision, which is an unaccommodated state of the eye, and data on eye refractive power distribution of the eye at near vision, which is an accommodated state of the eye are inputted, a display, and a calculation and control unit which obtains data on distribution of difference between both the inputted data on distribution, so as to display at least one of the following data on the display: the data on the eye refractive power distribution at far vision; the data on the eye refractive power distribution at near vision; and the obtained data on the distribution of difference.

Abstract: A diagnosing apparatus for examining or measuring a body of an examinee, the apparatus comprises an operating part including diagnosing means for examining or measuring the body of the examinee, the operating part is brought into an operable condition by supplying power thereto, data read means for reading out data from a storage medium containing data which is individual to the examinee or to an examiner, condition detecting means for detecting whether or not the data has been read out, or whether or not the data is in a readable condition, and power supply control means for controlling power supply to the operating part based on a result detected by the detecting means.

Abstract: The purpose of the present invention is to provide an apparatus for determining an amount of corneal ablation, which can calculates an amount of corneal ablation in order to perform an operation for correcting ametropia adequately, based on a corneal shape and/or an eye refractive power. Another object of the present invention is to provide a surgical apparatus for a cornea, by which the surgical operation can be performed efficiently based on the obtained amount of corneal ablation.