Abstract: An ophthalmologic device includes: a visual target presenting unit configured to present a common visual target to be viewed with both subject's eyes; a presenting distance changing unit configured to change a presenting distance of the visual target presented by the visual target presenting unit from a predetermined far vision distance to a predetermined near vision distance; an ocular characteristic acquiring unit configured to objectively acquire an optical characteristic of the subject's eyes; an addition power adding unit configured to add the addition power to the both subject's eyes; and a control unit configured to cause the presenting distance changing unit to change the presenting distance and the ocular characteristic acquiring unit to continuously acquire the optical characteristic, in a state in which an addition power is added to the both subject's eyes by the addition power adding unit.

Abstract: An eye-fatigue examining device and an eye-fatigue examining method capable of examining eye fatigue of a subject's eye regardless of an age of a patient are provided. The eye-fatigue examining device includes: a light quantity difference adjusting unit that increases a light quantity difference between lights respectively incident on right and left subject's eyes; a gaze direction detecting unit that detects gaze directions of the respective subject's eyes while the light quantity difference adjusting unit increases the light quantity difference; and a light quantity difference deciding unit that decides a specific light quantity difference at which a change in the gaze directions due to the increase in the light quantity difference occurs, based on the detection result of the gaze direction detecting unit.

Abstract: An ophthalmologic device includes: a visual target presenting unit configured to present a common visual target to be viewed with both subject's eyes; a presenting distance changing unit configured to change a presenting distance of the visual target presented by the visual target presenting unit from a predetermined far vision distance to a predetermined near vision distance; an ocular characteristic acquiring unit configured to objectively acquire an optical characteristic of the subject's eyes; an addition power adding unit configured to add the addition power to the both subject's eyes; and a control unit configured to cause the presenting distance changing unit to change the presenting distance and the ocular characteristic acquiring unit to continuously acquire the optical characteristic, in a state in which an addition power is added to the both subject's eyes by the addition power adding unit.

Abstract: An eye-fatigue examining device and an eye-fatigue examining method capable of examining eye fatigue of a subject's eye regardless of an age of a patient are provided. The eye-fatigue examining device includes: a light quantity difference adjusting unit that increases a light quantity difference between lights respectively incident on right and left subject's eyes; a gaze direction detecting unit that detects gaze directions of the respective subject's eyes while the light quantity difference adjusting unit increases the light quantity difference; and a light quantity difference deciding unit that decides a specific light quantity difference at which a change in the gaze directions due to the increase in the light quantity difference occurs, based on the detection result of the gaze direction detecting unit.

Abstract: The present invention provides a contact lens having novel myopia progression suppression capability, while enabling a good QOV to be obtained and ensuring myopia is kept from progressing. A contact lens having a refractive correction power for correcting myopia and myopic astigmatism set in a central region of an optical part, wherein a positive addition power in comparison with a power in the central region is set in a peripheral region of the optical part so that progression of the myopia or myopic astigmatism is suppressed, a positioning member is provided that specifies a circumferential position of the lens under a worn condition, and a lens optical axis of the optical part is set offset from a lens geometric center to align with a line of sight of a human eye under the worn condition produced by the positioning member.

Abstract: A designing method of a contact lens for myopia progression suppression including: providing a tonic accommodation relaxation region in which an additional power whose maximum value is from +0.25 to +0.75 diopters is set with respect to a correction power that is required for realizing a proper correction, the additional power being capable of relaxing a tonic accommodation without improving an aberration off an optical axis and an accommodation lag on the optical axis; and providing a proper correction region in which the additional power is not set at least on an optical center.

Abstract: The present invention provides a contact lens having novel myopia progression suppression capability, while enabling a good QOV to be obtained and ensuring myopia is kept from progressing. A contact lens having a refractive correction power for correcting myopia and myopic astigmatism set in a central region of an optical part, wherein a positive addition power in comparison with a power in the central region is set in a peripheral region of the optical part so that progression of the myopia or myopic astigmatism is suppressed, a positioning member is provided that specifies a circumferential position of the lens under a worn condition, and a lens optical axis of the optical part is set offset from a lens geometric center to align with a line of sight of a human eye under the worn condition produced by the positioning member.

Abstract: An object is to provide an artificial vision system ensuring a wide field of view without damaging a retina. In the artificial vision system, a plurality of electrodes (23) are to be implanted so as to stick in an optic papilla of an eye of a patient. A signal for stimulation pulse is generated based on an image captured by an image pick up device (11) to be disposed outside a body of the patient. The electrical stimulation signals outputted from the electrodes (23) based on the signals for stimulation pulse stimulate an optic nerve of the eye, thereby enabling the patient to visually recognize the image from the image pickup device (11).

Abstract: A visual restoration aiding device for restoring vision of a patient, comprises: a signal generation unit including a substrate to be placed on an outer side of a choroid of a patient's eye and a plurality of electrodes arranged on the substrate for applying electrical stimulation pulse signals to cells constituting a retina; a photographing unit which photographs an object to be recognized by the patient; and a processing unit which converts image data obtained by the photographing unit to data for electrical stimulation pulse signal and transmits the converted data to the signal generation unit: wherein, based on the data for electrical stimulation pulse signal transmitted from the processing unit, the signal generation unit forms a waveform of an electrical stimulation pulse signal to be outputted from each electrode into a biphasic rectangular wave including rectangular waves of opposite polarities, and sets a pulse width of the electrical stimulation pulse signal to 0.2 msec. or more and 2 msec. or less.

Abstract: An ophthalmic treatment method for inhibiting death of retinal constitutive cells of an eye by stimulating the cells includes a first step of placing a positive electrode and a negative electrode in such positions outside the eye that the electrodes provide electrical stimulation to the cells, at least one of the electrodes being placed on one of a cornea and sclera of the eye; and a second step of generating an electrical stimulation pulse having an electric current set at 20 ?A or more but not exceeding 300 ?A from each placed electrode.

Abstract: Scattering can be measured by using an optical system having a Hartman-Shack wave-surface sensor.

Abstract: A visual restoration aiding device for restoring vision of a patient, comprises: a substrate which will be placed on or under a retina, a choroid or a sclera of a patient's eye; a plurality of electrodes arranged on the substrate for applying electrical stimulation pulse signals to cells constituting the retina; a photographing unit which photographs an object to be recognized by the patient; and a control unit which controls output of the electrical stimulation pulse signals from each electrode based image data captured by the photographing unit. The number of the electrodes placed on the substrate is less than the number of electrodes that can simultaneously output the electrical stimulation pulse signals based on the image data corresponding to one frame.

Abstract: A visual restoration aiding device includes an electrode array (21) having a plurality of electrodes (21a) placed on an outside of a choroid (E2) of a patient's eye (E) to electrically stimulate cells constituting a retina (E3).

Abstract: Scattering can be measured by using an optical system having a Hartman-Shack wave-surface sensor.

Abstract: Scattering can be measured by using an optical system having a Hartman-Shack wave-surface sensor.

Abstract: There is provided an ophthalmologic apparatus which can be effectively used for the clinic of a dry eye by using, as a basic principle, that when a tear film dries up, a corneal shape is changed and/or a wavefront aberration becomes large. When a measurement is started, the ophthalmologic apparatus is aligned. An arithmetic part performs an initial setting of a measurement interval of the apparatus, a measurement time and the like by a wavefront measurement part. An input part or the arithmetic part triggers a measurement start, and the arithmetic part repeats a measurement of the corneal shape and corneal wavefront aberrations by a measurement part until time reaches a measurement end time. When the time reaches the measurement end time, a judgment part analyzes a breakup state as one index for judgment of a state of a dry eye. The judgment part obtains values relating to the breakup to output them, and performs an automatic diagnosis about dry eye on the basis of the values.

Abstract: A visual restoration aiding device for restoring vision of a patient, comprises: a signal generation unit including a substrate to be placed on an outer side of a choroid of a patient's eye and a plurality of electrodes arranged on the substrate for applying electrical stimulation pulse signals to cells constituting a retina; a photographing unit which photographs an object to be recognized by the patient; and a processing unit which converts image data obtained by the photographing unit to data for electrical stimulation pulse signal and transmits the converted data to the signal generation unit: wherein, based on the data for electrical stimulation pulse signal transmitted from the processing unit, the signal generation unit forms a waveform of an electrical stimulation pulse signal to be outputted from each electrode into a biphasic rectangular wave including rectangular waves of opposite polarities, and sets a pulse width of the electrical stimulation pulse signal to 0.2 msec. or more and 2 msec. or less.

Abstract: An ophthalmic treatment method for inhibiting death of retinal constitutive cells of an eye by stimulating the cells includes a first step of placing a positive electrode and a negative electrode in such positions outside the eye that the electrodes provide electrical stimulation to the cells, at least one of the electrodes being placed on one of a cornea and sclera of the eye; and a second step of generating an electrical stimulation pulse having an electric current set at 20 ?A or more but not exceeding 300 ?A from each placed electrode.

Abstract: A visual restoration aiding device for restoring vision of a patient, comprises: a substrate which will be placed on or under a retina, a choroid or a sclera of a patient's eye; a plurality of electrodes arranged on the substrate for applying electrical stimulation pulse signals to cells constituting the retina; a photographing unit which photographs an object to be recognized by the patient; and a control unit which controls output of the electrical stimulation pulse signals from each electrode based image data captured by the photographing unit. The number of the electrodes placed on the substrate is less than the number of electrodes that can simultaneously output the electrical stimulation pulse signals based on the image data corresponding to one frame.

Abstract: An ophthalmic treatment apparatus includes an electrode which is set on a place to apply electrical stimulation to cells constituting a retina; and an electrical stimulation pulse generator which is connected to the electrode, for generating, from the electrode, a predetermined electrical stimulation pulse whose electric current is set at 20 ?A or more but not exceeding 300 ?A.