Abstract: A medical data processing method includes the steps of inputting or obtaining image data, temporarily storing the inputted or obtained image data, and automatically deleting the temporarily stored image data in accordance with a predetermined delete condition.

Abstract: A medical data processing method includes the steps of inputting or obtaining image data, temporarily storing the inputted or obtained image data, and automatically deleting the temporarily stored image data in accordance with a predetermined delete condition.

Abstract: A method for analyzing a stereoscopic image of a fundus to detect and analyze an optic disk part on the basis of the stereoscopic image of the fundus, which can provide highly reliable results of analysis even if the fundus is inclined. The method includes: a first step of designating a disk line in the stereoscopic image of the fundus; a second step of determining a lowest point in a disk region which is determined by the designated disk line; a third step of determining a cross section of the disk region at each predetermined angle centering on the lowest point; a fourth step of determining highest points at both ends of a line of longitude on each cross section of the disk region; a fifth step of setting as a cup point a level which is lower from the highest points by a predetermined depth; and a sixth step of forming a cup rim by consecutively connecting the cup points in the cross sections of the disk region determined in the fifth step.

Abstract: An ophthalmic measuring apparatus in one aspect of the invention for examining the crystalline lens of an eye having a measuring unit which projects a measuring light beam on the crystalline lens of the eye and receives the measuring light scattered by the crystalline lens comprises: a reference position setting means for setting a reference position for the eye in a three-dimensional space; a moving means for moving the measuring unit in a three-dimensional space relative to the eye; and a displacement detecting means for detecting the displacement of the measuring unit from the reference position for the eye.

Abstract: In an ophthalmic measurement apparatus providing optical systems for focusing-and-projecting a laser beam for use in measuring onto an anterior portion of an eye to be examined, and for receiving a scattered light by the internal tissues of the anterior portion of the eye by a scattered laser beam by guiding the scattered light to a photoelectric transducing element, and for measuring tissues and components in the internal parts of the anterior portion of the eye based on an output signal transmitted from the photoelectric transducing element, alignment is performed by advancing a cylindrical shaped lens for forming a laser beam to be a slit-shaped light bundle in a light path in laser beam projecting optical system with observing an image of a section of the anterior portion of the eye which is light-sectioned by a slit-shaped laser beam, or by scanning a laser beam by laser beam scanning device with observing an image of a section of the anterior portion of the eye which is light-sectioned by the scanned la

Abstract: A fundus camera for photographing fundus of an eye to be examined, comprises observing illumination/target projection optical system provided with a slit-plate having a pin-hole aperture and a ring-slit, for illuminating the eye to be examined with an illumination light bundle for use in observation that is formed by the ring-slit to be ring-shaped by illuminating the slit-plate uniformly, and for projecting an alignment index onto a cornea of the eye to be examined by using a light bundle that has passed through the pin-hole aperture, photographing illumination optical system for illuminating the eye to be examined with a ring-shaped illumination light bundle for use in photography by using a part of optical path of the observing illumination/target projection optical system, observation optical system for observing the focused condition of an image of the alignment index projected onto the cornea of the eye to be examined and the fundus of the eye to be examined by using the observing illumination/target pr

Abstract: An ophthalmic measuring apparatus for eliminating the noise ingredient of the light without eliminating the scattered light by molecules in crystalline lens of the examiner, to achieve stable results of measurements, the ophthalmic measuring apparatus provided a laser beam irradiating optical system for emitting and converging a laser beam to an eye, and a scattered light detecting optical system for detecting a light scattered by molecules in a crystalline lens from the laser beam, and also provided measuring device for measuring a composition in the crystalline lens on the basis of the intensity of the light detected by the scattered light detecting optical system, of which a first polarizing filter is disposed in the scattered light detecting optical system so as to be consistent with the polarizing axis of the laser beam of the laser beam irradiating optical system.

Abstract: An ophthalmic measuring apparatus is provided for automatically detecting blinking and insufficient fixation of an eye under examination, and the light reflected from the cornea, as well as for automatically correcting the variation of sensitivity of the apparatus without using any special calibration devices, in order to obtain highly reliable measurements. The apparatus comprising a laser beam projecting optical system for emitting and converging a laser beam to the crystalline lens of the eye and a scattered light detecting optical system for detecting light scattered by the protein molecules within the crystalline lens through a light-receiving optical system into a photoelectric transducer in order to measure the crystalline lens on the basis of the output signals of the photoelectric transducer.

Abstract: An ophthalmic measurement apparatus projects a laser beam into an eye and performs measurements using the light scattered by floating cells in the eye. The aperture area of the mask that defines the field of measurement view is adjusted to correspond to measurement conditions in the eye. A system processor determines the number of floating cells based on signals from a photosensor disposed behind the mask aperture and corrects the cell count according to a predetermined formula. The aperture area of the mask is changed depending on the counted number of floating cells in such a manner that the size of the mask aperture is decreased when there are many cells in the eye and increased when there are few cells in the eye.

Abstract: An optical scanner comprises an optical reflecting means capable of being mechanically displaced to deflect an optical beam for scanning across a target, a driving means for controlling the mechanical displacement of this optical reflecting means, and a storage means for storing digitized data of a driving signal having a predetermined waveform which is set depending on the mechanical characteristics of the optical reflecting means and driving means. The digitized data are sequentially read out and converted into analog signals to drive the reflecting means. This arrangement makes it possible to produce a desired driving waveform which can prevent the overshooting of the reflecting means when it reverses its motion.

Abstract: A slit lamp microscope for use in observing the cornea, crystalline lens and other tissues of an eye includes a scanning device for scanning the laser beam vertically and horizontally within a selected area of the eye to be examined to form thereon a slit image which illuminates the selected area. A regulating device is provided for regulating the intensity of the laser beam to a predetermined level depending upon the amount of light reflected from the eye. The scanning device is controlled to change its scanning area to make the selected area variable to thereby provide a slit image which is changeable in size.

Abstract: An apparatus operates in an observation mode for determining a specific spot within the eye of a patient and operates in a measurement mode for measuring protein particles contained within the specific spot. The eye is illuminated with a slit light to determine a specific spot. A laser light is irradiated onto the determined specific spot. A scattered light scattered by protein particles is detected by a detector to measure the protein particles.

Abstract: An ophthalmic measuring method and apparatus according to the present invention are provided for the purpose of measuring the state of microparticles in the aqueous chamber of an eye to be examined which is irradiated with a laser beam to detect the scattering characteristics in the aqueous chamber of the eye. A laser beam with a predetermined wavelength is projected into the aqueous chamber of the eye. Light scattered from the aqueous chamber is received with or without a linear polarizer and evaluated in terms of the changes between the scattering characteristics with or without the linear polarizer in order to measure the number or concentration of the microparticles present in the aqueous chamber for the purpose of detecting ophthalmic diseases.

Abstract: Disclosed is a method and apparatus for measuring particles in a fluid by irradiating the fluid containing the particle with a laser beam and analyzing the laser light scattered by the particle to determine the characteristics of the particle. An elliptical laser beam is projected into a particle detection area in which the particles to be measured are caused to flow. The laser light scattered by the particle is received for photoelectric conversion into a time-series photoelectric signal in a direction along which the particle flows. The photoelectric signal is subjected to a moving average process to determine a time width during which the signal exceeds a predetermined level to cause the change in intensity of the scattered light. This change is recognized as a change in intensity caused by the passage of the particle through the particle detection area when the time width falls within a certain range.

Abstract: An ophthalmological measuring apparatus having a laser-slit projector unit for projecting a laser beam on a portion in a human eyeball, a microscope unit adapted for receiving and observing the light reflected from the portion in the eyeball and a detector unit adapted for displaying the observing point in the eyeball projected by the laser beam.

Abstract: An apparatus for detecting ophthalmic diseases such as a cataract in the lens of a patient's eye which includes means for focussing a laser beam at a selected spot in the lens of an eye, and according to which the light back-scattered from the eye are photoelectrically detected and converted into an electrical signal which is subsequently used to determine an autocorrelation function relating to the fluctuation of intensity of the back-scattered light over time, and to derive therefrom a protein particle distribution essential to ophthalmic disease detection.