Abstract: Disclosed is an ophthalmologic apparatus, such as a slit lamp microscope, which is improved in terms of cable routing when an imaging apparatus is used, thereby achieving an improvement in operability for the examiner, mitigating the bother or discomfort for the subject, and realizing an improved outward appearance.

Abstract: An eye examination device includes an eye examination unit for examining or measuring an eye of an examinee; a carrying case including a first housing part for housing the eye examination unit and a base part which mounts thereon the eye examination unit; a horizontal movement unit which moves the eye examination unit in a horizontal direction with respect to the base part; and a vertical movement unit which moves the eye examination unit in a vertical direction with respect to the base part.

Abstract: The present invention provides a power operated instrument stand for use, for example during eye examinations. The instrument stand has a motorized arm to aid in precise placement of instrumentation. The instrument stand also has control circuitry for room lighting levels, patient chair positioning and slit lamp operation. The instrument stand may be controlled through an attached control pad, or a remote control.

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 difference in optical performance, such as astigmatism, the radius of curvature of a first surface, etc., of left and right lenses is kept at or below a specific level, and the difference in optical performance and the radius of curvature of the first surfaces between new and old lenses when the wearer changes lenses is also kept at or below a specific level, the result being lenses that are more comfortable to wear and are more attractive. When spectacle lens prescription values for a customer are transmitted from an order-side computer to a manufacturer-side computer, a check is made for whether prescription data already exists for that customer, and if it does. the optical performance of the new and old lens designs is compared, and if the difference is within a specific range.

Abstract: An ophthalmologic apparatus is disclosed, in which even in the case where the range of lateral relative movement of a trestle is limited with respect to a base, the measurement can be continued without enlarging the space occupied by the apparatus body and without imposing an extra burden on the testee. The apparatus comprises a trestle (4) mounted on a base (3) and laterally movable relative to the base (3) and has a limited range, and a measuring head portion (5) mounted on the trestle (4) and automatically laterally moved relative to the trestle (4) with respect to a reference position (H1). In the case where the trestle (4) moves rightward or leftward and reaches a movement limit position O2, O3, the reference position (H1) of the measuring head portion (5) with respect to the trestle (4) is shifted in the direction in which the trestle (4) moves.

Abstract: The present invention provides a power operated instrument stand for use, for example during eye examinations. The instrument stand has a motorized arm to aid in precise placement of instrumentation. The instrument stand also has control circuitry for room lighting levels, patient chair positioning and slit lamp operation. The instrument stand may be controlled through an attached control pad, or a remote control.

Abstract: Apparatus for determining if a cornea (whether in vitro or in vivo) has been modified (either surgically or otherwise). The method includes the steps of: passing a beam of collimated light a (either coherent or incoherent) through the cornea to produce a distorted wavefront; determining the characteristics of the distorted wavefront; and analyzing the distorted wavefront for characteristics that identify the presence of a modification. The analysis of the distorted wavefront can be for the presence of higher order aberrations, or Gausian characteristics which are indicative of modifications.

Abstract: An enucleated eye examination container 10 includes a housing 12 with an interior 14 to be pressurized. An eye retaining member 16 is contained within housing 12. An eye abutment portion 18 receives the eye 20 so that the eye 20 is urged against eye abutment portion 18 by eye retaining member 16. A connector 24 is attached to housing 12 for connection to a pressurized source of gas.

Abstract: An ophthalmic examination apparatus comprises a plurality of portable ophthalmic diagnostic equipment devices having different ophthalmic diagnostic functions, such as a slit lamp and a fundus camera, a support base that supports each ophthalmic diagnostic equipment device in a way that allows the devices to be freely exchanged, and means for moving the support base horizontally and vertically. Such an arrangement needs only a mechanical connection between the devices and the support base and simplifies the ophthalmic examination system.

Abstract: An ophthalmic apparatus includes a base board 5, a main unit 1 detachably mounted on the base board, and a head support unit 10 fixed on the base board. This head support unit 10 includes a pair of columns 14R, 14L foldable to the base board 5. With the main unit 1 dismounted from the base board 5, the head support unit 10 is folded until it becomes parallel with the base board 5. The apparatus can thus be housed in a small transportation case when transported.

Abstract: A vision tester comprising a front wall and a top. The top has positioned thereon printed matter. The front wall has at least one opening through which the user of the vision tester looks. A plurality of magnifying lenses, of different diopter ratings, are selectively positionable behind the opening. Indicia appear to indicate the diopter rating of each lens. A mirror, at an obtuse angle, is positioned behind the opening and below the top of the vision tester. The user of the vision tester can determine the diopter rating of the appropriate lens needed for reading by determining which lens renders the printed matter clear and readable, and noting the appropriate rating.

Abstract: An ophthalmologic apparatus is disclosed, in which even in the case where the range of lateral relative movement of a trestle is limited with respect to a base, the measurement can be continued without enlarging the space occupied by the apparatus body and without imposing an extra burden on the testee. The apparatus composes a trestle (4) mounted on a base (3) and laterally movable relative to the base (3) and has a limited range, and a measuring head portion (5) mounted on the trestle (4) and automatically laterally moved relative to the trestle (4) with respect to a reference position (H1). In the case where the trestle (4) moves rightward or leftward and reaches a movement limit position O2, O3, the reference position (H1) of the measuring head portion (5) with respect to the trestle (4) is shifted in the direction in which the trestle (4) moves.

Abstract: A lens pad is provided for use on a lens clamp. The lens pad comprises a lens-engaging surface which, in turn, has a lens-facing recess located substantially centrally thereon. The lens-engaging surface thus is annular. Alternatively, the lens-engaging surface is more resilient toward a center thereof than toward a periphery thereof. Forces exerted by the lens pad against a surface of a lens when the lens pad is pressed against the surface therefore are less concentrated than such forces would be if the lens-engaging surface had no recess or variation in resiliency. Also provided is a clamp pad assembly. The clamp pad assembly includes a lens pad and a rotatable body for rotatably connecting the lens pad, at least indirectly, to a clamp arm. The clamp pad assembly also may include a swivel member which is pivotally mounted to the rotatable body for rotation therewith and for pivoting with respect thereto, in which case, the lens pad is mounted to the swivel member for rotation and pivoting therewith.

Abstract: An improved ocular device used to illustrate common ocular disorders such as nearsightedness, farsightedness, astigmatism and presbyopia. The device includes a light source that forms an optical axis across the length of the device and is subjected to a slide holder and a focusing mechanism. The slide holder exposes an inverted image to the light source, which is then exposed to a corneal lens and vernier lens. Both the slide holder and focusing mechanism can be moved in different positions along the optical axis to focus and clarify the image exposed to the light that is shown on the retinal screen of the device. A vernier lens is also included as part of the focusing mechanism to simulate accommodation as needed. The device can also be used to simulate ocular pathology.

Abstract: An ophthalmic instrument support apparatus has a generally cylindrical base with top and bottom ends and an instrument support post that is, preferably, telescopably received in the base to extend upward an adjustable distance. A laterally extending arm is detachably secured to said post and arranged to receive an ophthalmic instrument on the extended end. The base is arranged to rest on a floor. The base has legs that are extendible from base to engage the floor for stability. An optional over-the-lap table is provided, with means to attach one end to the base, with a leg to support the distal end. The base is arranged with doors to receive a selected set of ophthalmic instruments, in the base and on the doors, for storage and protection during transport.

Abstract: An eye examining apparatus includes an eye examining system provided with an image pickup device for picking up the image of an eye to be examined and for examining the eye to be examined, a driver for driving the eye examining system, an input device for permitting an operator to effect an input operation to operate the driver a display for displaying the image of the eye to be examined obtained by the image pickup device, and a controller for changing the relation between the direction of the input to the input device and the direction of driving of the driver conforming thereto in conformity with the direction of the display.

Abstract: An optometric apparatus designed to ensure that measurement results can be readily confirmed before they are printed out, and to prevent the deletion of data due to an erroneous operation of a switch. The optometric apparatus having examining device for examining the visual function of an eye to be examined, comprising: memory for storing data on examination by the examining device; display device having a display screen for displaying the examination data; printing device for printing the examination data stored in the memory; a print switch for inputting a signal for printing the examination data to the printing device; display control circuit for displaying the examination data on the display device on the basis of the signal from the print switch; confirmation-signal generating switch for generating a confirmation signal for confirming the absence of an abnormality in the examination data; and commanding circuit for commanding the printing device to effect printing on the basis of the confirmation signal.

Abstract: A vision tester comprising a front wall and a back wall. Printed matter comprising words appears on the back wall, which is approximately 14 inches (35.6 cm.) from the front wall. The printed matter is exposed to ambient light from the top and front. The front wall has an opening through which the user of the vision tester looks. A plurality of magnifying lenses, of different diopter ratings, are selectively positionable behind the opening. Indicia appear to indicate the diopter rating of each lens. The user of the vision tester can determine the diopter rating of the appropriate lens needed for reading by determining which lens renders the printed matter clear and readable.

Abstract: The invention is directed to an arrangement for tiltably journalling an ophthalmologic treatment and/or examining apparatus. The arrangement includes a mount and an arcuate guide fixedly attached at an end thereof to the mount. Guide elements are mounted on the apparatus for movably guiding the apparatus along the arcuate guide to tilt the apparatus to a desired position. A pressure-spring device has a first end pivotally connected to the apparatus and a second end pivotally connected to the mount whereby the weight of the apparatus is compensated as the apparatus is tilted when moved along the arcuate guide. The arrangement further includes a mechanism for blocking and deblocking the spring action of the pressure-spring device. A lever assembly imparts a tilting movement to the apparatus. The lever assembly has a first pivot connection whereat the Lever assembly is connected to the mount and a second pivot connection whereat the lever assembly is connected to the apparatus.

Abstract: A portable, binocular direct ophthalmoscope. A frame carrying a binocular optical system is suspended for rotation about a pivot axis from one end of a support beam; an opposite end of the support beam is attached to a handle. A beam splitter block mounted to the frame carries an illumination source for light emission along an illumination axis and into an eye of a subject. Left and right beam splitting mirrors attached to the block are symmetrically and obliquely disposed on opposite sides of the illumination axis. Light reflected back from the subject's eye is split by the beam splitting mirrors into a left-directed beam and a right-directed beam, which are each reflected rearward by laterally spaced apart deflection mirrors through left and right dioptric disk assemblies and thence into the left and right eyes of an observer, respectively.

Abstract: In an eye test apparatus of the type having a single examination area, an improved view port is disclosed having a view port casing and a mounting apparatus arranged so that the view port casing is movable between a first and second active positions. In a first active position, the casing receives a patient's forehead so that a patient's right eye is aligned with a examination area, and a second active position wherein a casing receives a patient's forehead so that a patient's left eye is aligned with the examination area. The casing is specially configured to occlude ambient light and to accommodate a patient wearing eyeglasses. The eye test apparatus may further have a position sensor system for sending the present position of the casing.

Abstract: An ophthalmic apparatus comprises an optical unit for changing-over and disposing optical elements having various kinds of optical characteristics to an inspection window, holding device for holding the optical unit, gyrating device for making the holding device gyrate between an evacuation position and an inspection position, vertical motive device for making the holding device move vertically, and locking device for preventing electromagnetically the holding device from working.

Abstract: The present invention provides a uniquely position adjustable ophthalmic instrument support table for use in conjunction with an examining chair and a lighting system which allows the user to program the desired room lighting independently for each of several inputs such as instrument switches, examination lights or other electrical devices used during an ophthalmic examination. The ophthalmic instrument support table includes a base unit and a table top mounted to the base unit by support structure allowing four degrees of freedom to adjust the location of the table top with respect to both the patient seated in the chair and the doctor examining the patient on the opposite side of the table. The lighting control system allows one or two circuits of room lights to be adjusted in intensity and to have this adjustment automatically recalled to set the programmed room lighting condition upon activation of the input.

Abstract: A measuring unit is mounted on a movable stage, which is movable in the right-left and front-rear directions relative to a fixed base stage. When an examiner moves the movable stage to the right or to the left by manipulating a joy stick, a micro switch detects that movement. Upon reception of a detection signal from the micro switch, a microcomputer allows power to be supplied to measurement circuits, to initiate a measurement mode. When judging that proper alignment has been established, the microcomputer automatically calculates a cornea shape. Measurement and calculation of a cornea shape are repeated until a standard deviation of measurement data falls within a given value. Upon completion of the measurement operation, the microcomputer stops the supply of power to the measurement circuits, to cancel the measurement mode.

Abstract: A hand-held ophthalmological apparatus comprises a measuring unit for measuring an examinee's eye, a hand unit attached to the measuring unit and held by a measurer and a forehead contact member for contacting a forehead of the examinee. The apparatus maintains a relative positional relationship between the measuring unit and the examinee's eye during a measurement.

Abstract: A haploscope has a housing defining left and right viewing apertures disposed to permit substantial alignment with a subject's left and right eyes and permit viewing through the housing. Projection light sources for projection of left and right images are provided and the housing defines first and second light source apertures for transmission of light from the sources therethrough. The haploscope has first and second projection devices for projecting images using the light passing through respective ones of the first and second light source apertures. The housing has a rotary disc and a motor for rotating the rotary disk within the housing at a position permitting occlusion of the first and second light source apertures and the left and right viewing apertures. The rotary disc has at least one viewing aperture disposed to align with the left and right viewing apertures during rotation of the rotary disc such that only one of the left and right viewing apertures is not occluded at a given time.

Abstract: A portable visual acuity testing system and method is used to measure the visual acuity of a person being tested. The portable visual acuity testing system includes a portable visual acuity testing structure and a plurality of interchangeable image display cards adapted to be engaged with the structure. Each image display card includes one or more images, such as a Snellen letter or Allen figure, of a predetermined size. A distance measurer, such as an ultrasonic distance measuring device is included within the portable visual acuity testing structure. When the portable visual acuity testing device is positioned at a distance from the person being tested at which the person can see or visually recognize the image, the distance measurer is activated to automatically and accurately measure the distance to the person being tested.

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: The video attachment is an apparatus to be mounted laterally on a microscope and which is independent of the optic of the microscope. The apparatus comprises an imaging lens system and a video camera. The light beam path in the apparatus is deflected in such a manner that the video camera does not impede the use of the microscope. The video attachment is preferably used with a microscope of a slit lamp for the diagnosis of the eye.

Abstract: An ophthalmologic instrument includes a body of the instrument including an objective optical system and a processing unit, and a camera section including a camera and a second processing unit and interchangeably mounted on the body of the instrument. The first processing unit and the second processing unit are communicably connected together by a predetermined form of serial data communication. In a mode of the invention, an auxiliary processing unit for controlling the operation of the camera is provided in the camera section. The auxiliary processing unit and the second processing unit are connected together so as to be able to exchange information.

Abstract: A laser apparatus for ophthalmological operation which can be readily handled and moved extremely easily. This apparatus comprises: a laser light source; a microscope unit with an observation optical system for observing an eye to be operated; a laser light guiding optical system for guiding treatment light emitted from the laser light source toward the affected part of the eye to be operated within an observation visual field of the microscope unit; a power source housing for containing a source for supplying electrical power to the microscope unit and the laser light source; conductor cables for connecting the microscope unit and the laser light source to the power source; a base with a friction plate which can be attached to the top surface of the power source housing; and a slide device which includes a joy stick and slides the microscope unit with respect to the base by operating the joy stick.

Abstract: The disclosure relates to a joystick for positioning a test axis of an ophthalmic instrument relative to an eye of a patient. In a preferred embodiment, the joystick includes an actuator extending therefrom and arranged to alternately engage a pair of motor control switches incident to slight rotation of the joystick in opposite directions, thereby activating a motor drive to raise and lower the test axis.

Abstract: A positioning device for an optical device is formed of two substantially parallel mounting plates which extend laterally outward from a headband. Each mounting plate has two vertically elongated slots cut in it. The slots closest to the headband (proximal) are in alignment with each other, as are the distal slots on the two mounting plates. Attached to the headband between the two mounting plates is an adjustable stop, such as a threaded rod and nut. The mounting plates and adjustable stop accept an optical device such as an ophthalmoscope having a mounting block affixed to a surface thereof. The mounting block is formed from a body having a hole extending therethrough for receiving a pivot pin. The hole is substantially parallel to the surface of the optical device to which the mounting block is affixed. The mounting block also has two spring loaded balls disposed partially within the body at opposing ends of a line through the body which is parallel to the hole in the body and located below the hole.

Abstract: A device for pinpoint application of micro-quantities of a pharmacologically suitable composition to the outer hard coat of the eye, comprises a micro-container with a fixation element. The micro-container comprises a bore whose aperture is adapted to contact the eye surface, and the fixation element is adapted for reversibly adhering to the eye surface.

Abstract: A clamp assembly comprises a clamp (12) having two levers (1, 2) linked at middle areas thereof with first ends thereof closing together to form clamping jaws (5, 6) and second, opposite, ends thereof formed as opening grips (3, 4) for separating the clamping jaws, which are spring loaded toward one another. The clamping jaws (5, 6) have forked shapes. The branches of the forks, and the ends thereof, are arranged to be spaced from one another so that they extend across, or extend over, a bridge of a pair of eyeglasses to be placed on inner, upper edges of spectacle glasses (13) or on an eyeglass frame (14). A first lever (2) of the clamp (12) has thereon a clamp coupling element (10, 19, 22, 24) for being selectively attached to, and selectively detached from, an optical-device coupling element (18, 20, 23, 25) on an optical device. The clamp assembly makes possible an easy and quick exchange of optical devices to be attached thereto.

Abstract: An optometric apparatus includes an operating table and a vision test chart displaying device provided internally within the operating table. An optical group, including a plurality of reflection-type optical elements, are disposed within the operating table. The optical group repeatedly reflects an optical image of the vision test chart projected from the vision test chart displaying device along an optical path within said operating table. A first deflecting optical element reflects the optical image of the vision test chart reflected by the reflection-type optical element group outside the operating table in a first direction. A second deflecting optical element then reflects the optical image of the vision test chart reflected by the first deflecting optical element in a second direction toward the examinee's eyes.

Abstract: Techniques and retinoscopic apparatus for measuring or determining a patient's optical error are disclosed. The techniques include overrefraction and can be performed from a fixed position, avoiding the practitioner's need to move back and forth relative to the patient's eye. Equipment associated with the apparatus is adapted to record the location of the retinoscope slide (relative to its upper or lower position) during the examination to provide information concerning the optical error present in the patient's eye.

Abstract: An ophthalmic light irradiation apparatus includes a deflection member and an operating section for driving the deflection member to deflect a laser beam to the interior of a patient's eye. The operating member includes an operating lever, a fixed ball member affixed to the operating lever, and a movable ball member integrally mounted on one end of the operating lever and movably engaged with the fixed ball member. The movable ball member is offset along the axial direction of the operating lever, which is supported so that it can be tilted in a desired direction within a plane substantially orthogonal to the axis of the lever. Movement of the movable ball member produced by tilting the operating lever is divided into first and second orthogonal directions for transmission to the deflection member. The apparatus is structurally simple in construction and has good operability enabling the laser beam to be precisely controlled.

Abstract: An attachment device for use with an exophthalmometer. The attachment device comprises positioning means attached to the exophthalmometer for abutting the forehead and nasion of the patient. The positioning means are adjustable for adjustably positioning the exophthalmometer on the face of the patient to permit measurement of exophthalmos in the absence of intact lateral orbital rims in a patient.

Abstract: There is disclosed apparatus which comprises a corneal topographer including a video camera or charge-coupled-device camera system for sensing images of rings of light reflected from the cornea, and means for processing the image rings to produce data useful in determining the contour of the cornea of a human eye.

Abstract: A pupil function analyzer has three major subsystems; an electro-optical system, an electronic interface system and a computer/software system. The electro-optical system can, in turn, be described in terms of three subsystems; one that delivers controlled lights to the patient's eyes, another that forms images of the two pupils on a video camera, and a third that moves the optics to maintain alignment with the patient's eyes. The electronic interface system converts signals from the video camera into digital signals to be read by the computer and also responds to the computer to move motors for the maintenance of optical alignment and also operates the light stimuli. The computer/software saves and analyzes the signals sent by the electronic interface, controls the alignment motors, and provides an operator interface, so that the operator can select tests and examine the results.

Abstract: A mechanical device for positioning the head of a patient in electromedical apparatuses, which device comprises a chin-rest and a headrest element held by two vertical rods, in which device mechanical means for bringing the same to a position displace of about 15.degree. to the right or to the left with respect to the center of the hemispherical dome of the electromedical apparatus, means for fastening the position of the patient's head, means that allow said fastening means to be adjusted and fastened by acting on one or on the other indifferently of said rods and mechanical means for adjusting the vertical position of the chin-rest are provided.

Abstract: The apparatus of this invention is intended for observation and treatment of a patient, in particular for ophthalmological cases. Such apparatus includes an arrangement (10) for ophthalmological observation and treatment, means (12) for effecting positioning and adjustment of said arrangement (10), an underframe (14) for supporting the means (12) and said arrangement (10) as well as a head rest system (16). In this apparatus the means (12) comprises jointed means permitting rotation of the arrangement (10) around a horizontal axis. The apparatus is applied for observing and treating the eyes of a patient who may be seated or recumbent.

Abstract: A color-corrected vision testing apparatus and method are provided, such having a blue filtered incandescent illuminating source in a light-occluding housing for high contrast translumination of test patterns also in said housing to obtain improved testing of acuity levels.

Abstract: The invention provides a binocular indirect ophthalmoscope in which light reflected from an eye under test is split and guided to left and right oculars (7, 8). Left and right mirrors (10, 11) for directing the split light to the left and right oculars being laterally movable about the optical axes (01, 02) of the oculars and toward and away from each other. The mirrors are arranged to follow the mutual approaching and receding of the oculars but the oculars will not follow the mutual approaching and receding of the mirrors, whereby the distance between these mirrors can be adjusted separately from the distance between the optical axes of the oculars.Such arrangement allows the operator to shift the light beams for observation (OFL, OFR) to appropriate positions where they are not interrupted by the iris, and thus allows sufficient and widely ranging stereoscopic observation, irrespective of the size of the pupil diameter of the eye under test or OF the direction of observation.

Abstract: An improved slit lamp assembly including a tonometer head adjustable height-wise with respect to a table included in the assembly and wherein a container is provided on the table with a supply of isopropyl alcohol impregnated swabs for use in disinfecting the tonometer head after use by each patient. The container includes an attachment structure for removably attaching it to the table so that when the supply of swabs is exhausted, a new supply may be placed in the container.

Abstract: An ophthalmologic examination unit comprises a chin rest (31) and a plurality of examination instruments (30, 59, 60) whose position can be laterally adjusted relative to the patient's eyes to be examined and which can be adjusted in elevation. The chin rest (31) and the instruments (30, 59, 60) are attached to a common supporting element (13) which can be vertically adjusted by means of a drive unit (18), such that the examination procedure be rendered as simple and convenient as possible and that the instrument setting be facilitated.

Abstract: The motion contrast visual sensitivity of an individual is tested by means of a target having thereon patches each composed of alternating light and dark bars, with individual patches varying in contrast and spatial frequency, and also in orientation. The target is viewed by way of a slot through a housing positioned in front of the individual under test, and a shutter rotating within the housing at a controlled speed periodically blocks the slot at a rate sufficiently slow, e.g. 30 cycles per second, for the observer to detect the resulting conditions of flicker.

Abstract: A visual acuity testing apparatus is herein disclosed which comprises a test chart displayer having a display surface pointing to an upward direction; a first reflector, for downwardly reflecting a light beam from the test chart displayer, disposed above the displayer; and a second reflector for reflecting the light beam, reflected by the first reflector, towards eyes to be tested.Said test chart displayer and the first reflector for reflecting and propagating the light beam from the displayer are contained in a leg of a table and the second reflector for reflecting the light beam from the first reflector towards the eyes to be tested is supported by a supporting arm of the table.