Abstract: To determine the presence or absence of an aperture mask in a funduscopic image output by a fundus camera, and to combine the funduscopic image with an aperture mask image formed in an aperture mask-forming section so as to correspond to a determination result. When an aperture mask determination section 34 determines the absence of the aperture mask image in the funduscopic image and the necessity of the addition, the aperture mask-forming section 35 forms a necessary mask, and an aperture mask combine section 36 combines the funduscopic image with the aperture mask image.

Abstract: Images transcribed with an eye fundus portion and data card information from two images obtained by continuously photographing the data card and the eye fundus photographing are combined. A photographing light source is flashed, and an eye fundus image is obtained by a digital still camera. The photographed eye fundus image is converted into an electrical signal, and after that, it is stored in the memory of an image processing display portion. Subsequently, when a set data card is photographed, this photographed image is also converted into the electrical signal in the digital still camera, and after that, it is stored in the memory. When both of the photographing are completed, an eye fundus area is cut out from the eye fundus image, and a data area is cut out from the data card, and both of them are combined.

Abstract: A cooperative diagnosis system for allowing a plurality of doctors to efficiently make a diagnosis in cooperation with each other is provided. When a terminal apparatus 112 on a requesting side 110 issues a diagnosis request to a server 120, the server 120 selects a doctor in charge of a diagnosis in accordance with preset priority levels, and transmits diagnosis request mail to the selected doctor's address in charge of the diagnosis. The doctor in charge of the diagnosis accesses the server 120 from his/her terminal 131A to browse examination data and register a diagnosis result in the server 120. The doctor on the requesting side 110 accesses the server 120 by using his/her terminal 112 to browse the diagnosis result.

Abstract: To synthesize an aperture mask having unnoticeable steps with a taken fundus image. In an image processing apparatus, taken fundus image data is inputted and then analyzed. After that, an aperture mask is selected and inputted as aperture mask data, and an image size of the fundus image compared with an image size of the aperture mask. The image size of the aperture mask is adjusted to the image size of the fundus image and then the fundus image data and the aperture mask data are developed in raster format to image memories. The image size of the fundus image is adjusted to the image size of the aperture mask based on the comparison result and a coefficient for low pass filtering process is determined according to the image size of the fundus image. After that, the degree of clearness of corresponding fundus image data is calculated based on each pixel value of the aperture mask data on which the low pass filtering process has been performed and the calculation result is outputted to the image memory.

Abstract: An ophthalmological apparatus includes an illuminator for illuminating an eye to be examined; an image pickup device for obtaining the image of the illuminated examined eye; a signal converter for converting a signal from the image pickup device into digital data; and a controller for controlling a system, which controller limits a predetermined operation of other than the image pickup device and the signal converter while the signal converter is performing a conversion operation. The ophthalmological apparatus can take a high-quality photographic image by preventing the occurrence of noise or by reducing noise.

Abstract: An ophthalmological apparatus includes an illuminator for illuminating an eye to be examined; an image pickup device for obtaining the image of the illuminated examined eye; a signal converter for converting a signal from the image pickup device into digital data; and a controller for controlling a system, which controller limits a predetermined operation of other than the image pickup device and the signal converter while the signal converter is performing a conversion operation. The ophthalmological apparatus can take a high-quality photographic image by preventing the occurrence of noise or by reducing noise.

Abstract: An ophthalmological apparatus includes an illuminator for illuminating an eye to be examined; an image pickup device for obtaining the image of the illuminated examined eye; a signal converter for converting a signal from the image pickup device into digital data; and a controller for controlling a system, which controller limits a predetermined operation of other than the image pickup device and the signal converter while the signal converter is performing a conversion operation. The ophthalmological apparatus can take a high-quality photographic image by preventing the occurrence of noise or by reducing noise.

Abstract: This invention provides an ophthalmic measuring apparatus and an ophthalmic apparatus particularly for observation by retroillumination. The ophthalmic measuring apparatus is provided with an eye measuring system, an observing system enabling observation of the eye to be examined by the examiner, an anterior segment illuminating system and a control system. The ophthalmic apparatus is provided with an observing system enabling observation of the eye to be examined, an ocular fundus illuminating system, a time measuring means and a control system.

Abstract: An ophthalmologic apparatus having a slidable bed slidable horizontally and vertically to observe, measure, and photograph an eye to be examined. The ophthalmologic apparatus has a base, a slidable bed slidable on the base, a joy stick for permitting a user to control sliding of the slidable bed, a monitor for effecting image display, and a control unit for controlling a displayed image on the monitor in response to the operation of the joy stick.

Abstract: An ophthalmic measuring apparatus having a cornea shape measuring device and an eye refractive power device which are operated so that both the measurements of the shape of cornea and the eye refractive power may be effected simultaneously.

Abstract: An ophthalmic measuring apparatus has a corneal shape measuring system projecting a first target image onto the cornea of an eye to be examined and receiving the corneal reflection image of the first target image by a first photodetector device to obtain information on the corneal shape, a refractive power measuring system projecting a second target image onto the eye fundus of the eye to be examined and receiving the corneal reflection image of the second target image by a second photodetector device to obtain information on the refractive power of the eye, a signal processing device selectively receiving the output of the corneal shape measuring system or the refractive power measuring system to calculate the corneal shape or the refractive power of the eye, and a measuring mode selecting device connected to the signal processing device to select a single measurement of the corneal shape of refractive power of the eye, or successive measurements of both.

Abstract: Disclosed is an ophthalmic instrument provided with an illuminating system for illuminating an eye being examined, an imaging system for imaging a predetermined portion of the eye being examined at a predetermined image plane position, and a detecting system for detecting any variation in the reflected light from the front-eye-part of the eye being examined by a nictitation of the eye being examined without depending on the quantity of illuminating light of the illuminating system.

Abstract: In a cornea shape measuring apparatus wherein a chart for measurement is projected onto the cornea of an eye to be examined and the shape of the corneal reflection image thereof is detected through a measuring optical system to thereby measure the shape of the cornea, there is provided an observation optical system for enabling the corneal reflection image to be always observed. The magnification of the observation optical system is made smaller than the magnification of the measuring optical system and the fore eye portion and the corneal reflection image are always observable.

Abstract: An automatic optometer provided with a first visual target for measuring the visual power of a subject, a response input unit for the subject to input a response corresponding to the visual target, a control unit for determining the accuracy of the subject's response input and for presenting additional different visual targets, a counter, the counter being reset each time a visual target is presented, a comparison unit for comparing the output of the counter with a predetermined value, and request means for requesting the subject's response input in accordance with the output of the comparison unit.

Abstract: An eye fundus camera is provided with an illuminating system for illuminating an eye to be examined, a photographing system for photographing the fundus of the eye to be examined, eye fundus reflected light receiving portions disposed in a plane substantially conjugate with the fundus of the eye to be examined and at a plurality of locations with a spacing greater than the dimension corresponding to the nipple diameter, and a control unit for operation-processing the outputs of the eye fundus reflected light receiving portions and automatically controlling the quantity of photo-taking light.

Abstract: An ophthalmologic apparatus including an illuminating light source, an annular index, and an optical system for projecting the index from an infinite distance to a cornea of an eye to be examined, in which the index is formed integrally with the projecting optical system.

Abstract: A method and apparatus in which a predetermined index is projected onto the cornea of an eye to be examined and the shape of the cornea determining the refractive power, the degree of astigmatism, the direction of astigmatic axis, etc. of the cornea is measured from the general elliptical shape of the image of the index reflected by the cornea. Independently of the center of the ellipse, arbitrary position coordinates of at least five points of the image reflected by the cornea are detected, whereby the elliptical shape is calculated without enhancing the alignment accuracy in a plane perpendicular to the optical axis. The image reflected by the cornea may be electrically detected by position detects such as CCDs, whereby automation of the measurement is provided, coupled with the later signal processing. A strobo light is used for the projection of the index.

Abstract: An eye fundus camera comprising a photographing system for taking a picture of an eye fundus, a fundus illumination system for alternatively providing infrared light and visible light to illuminate the fundus, a viewer connected to the photographing system for the observation of the fundus, an image pick-up part containing therein an image pick-up tube and connected to the photographing system through a stationary wavelength dividing mirror which reflects infrared light and transmits visible light, and a light intercepting screen plate retractably disposed in the optical light path between the wavelength dividing mirror and the image pick-up tube.