Abstract: An ophthalmic instrument including a light emitter, an optical system, and a control section. The light emitter includes a light source including at least one out of a first light source unit or a second light source unit that emits light for examining a subject eye. The light emitter is configured to emit light from the light source. The optical system guides light emitted from the light emitter onto a right-eye retina and/or onto a left-eye retina. The control section is configured to control the light emitter and the optical system such that the light is shone onto the right-eye retina and/or onto the left-eye retina.

Abstract: An ophthalmic device including a vision field testing section including a target presentation section and a vision field test optical system and configured to perform a vision field test on an examination eye, a measuring section including a measurement optical system to perform optical coherence tomography measurements on the examination eye, and a measurement unit configured to generate a tomographic image of the examination eye, an optical path combining section provided between the examination eye and the target presentation section and configured to combine a first optical path of the vision field test optical system and a second optical path of the measurement optical system, a first lens provided between the optical path combining section and the target presentation section and configured to perform diopter adjustment, a second lens provided between the optical path combining section and a position of the examination eye or the measurement unit, and employed in focus adjustment, a first driving section

Abstract: An ophthalmic instrument including a light source, an optical system to guide light from the light source onto a right eye retina of a subject and/or onto a left eye retina of the subject, and a control section to control the optical system so as to perform a visual field test on the right eye retina and/or the left eye retina by the light being shone onto the right-eye retina and/or the left-eye retina.

Abstract: An ophthalmic instrument including a light emitter, an optical system, and a control section. The light emitter includes a light source including at least one out of a first light source unit or a second light source unit that emits light for examining a subject eye. The light emitter is configured to emit light from the light source. The optical system guides light emitted from the light emitter onto a right-eye retina and/or onto a left-eye retina. The control section is configured to control the light emitter and the optical system such that the light is shone onto the right-eye retina and/or onto the left-eye retina.

Abstract: Provided are an ophthalmic instrument, an image generation device, a program, and an ophthalmic system capable of allowing a patient to directly experience and confirm how vision will actually appear following surgery. The ophthalmic instrument includes a light source, an optical system that guides light emitted from the light source onto a retina of a subject eye, a communication section that receives a simulation image generated based on optometry information for the subject eye and intraocular lens information relating to an intraocular lens prescribable for the subject eye, the simulation image corresponding to how vision would appear in a case in which the intraocular lens is prescribed for the subject eye, and a control section that controls the light source and the optical system such that the simulation image received by the communication section is projected onto the retina.

Abstract: The subjective eye refractive power measuring apparatus according to the present invention objectively measures the refractive power of an optical system to be tested. The subjective eye refractive power measuring apparatus comprises a measuring element that output a detection signal corresponding to the refractive power of the optical system to be tested, an arithmetic device that calculates a measured value related to the refractive power based upon an output signal from the measuring element, a determination device that determines whether or not specific conditions related to termination of a measuring operation are satisfied based upon, at least, either a measured value obtained by the arithmetic device or the length of measurement time required for measurement and a termination device that implements specific control for terminating a measuring operation when the judgement device has determined that specific conditions are satisfied.

Abstract: This invention provides a microscope for operation which can form a black point for protecting a patient's retina even when the retina part is not at the center of the field of view of the microscope. The microscope for operation has an X-Y stage for moving the microscope body, a CCD camera for obtaining an image in the field of view of the microscope, a liquid crystal device provided with a light transmitting surface transmitting illuminating light therethrough and comprised of display dots disposed in the form of a matrix, and a control device for controlling and driving the liquid crystal device.

Abstract: A microscope includes an objective lens and 1st, 2nd, 3rd and 4th magnification-varying optical systems of a same power, having optical axes parallel to the optical axis of the objective lens and positioned behind the objective lens and around the optical axis thereof. An objective unit houses the objective lens and the 1st, 2nd, 3rd and 4th magnification-varying optical systems. A deflection optical system directs two specified light beams, among the light beams transmitted by the 1st, 2nd, 3rd and 4th magnification-varying optical systems, to a first direction and also directs the remaining two light beams to a second direction. A first observation optical system respectively forms images, for observation, by the two light beams directed to the first direction. A second observation optical system respectively forms images, for observation, by the two light beams directed to the second direction. First and second observation units are detachably mountable alternatively to the objective unit.

Abstract: An optical instrument having an eyepiece unit through which a viewer is able to view an object, a switch provided on the eyepiece unit and a control device controlling an optical system in the eyepiece unit based on an output signal from the switch.

Abstract: A slit lamp microscope is of the type having an illumination optical system for illuminating the eye to be examined, an observation optical system for observing the illuminated eye to be examined and a photographing unit. The slit lamp microscope comprises exposure control unit for controlling exposure at the time of photographing, a photographing conditions designation arrangement for designating at the time of photographing at least the designation of a part to the eye to be photographed and conditions regarding system of photographing, and an optimal exposure calculation unit for calculating an optimal exposure in accordance with the designated photographing conditions. The exposure control apparatus controls the exposure in accordance with the value of exposure calculated by the optimal exposure calculation unit when the photographing conditions are designated by the photographing conditions designation means.

Abstract: An ophthalmic photographing apparatus comprises an illumination optical system for illuminating an eye to be tested, a viewing optical system having a variable magnification optical system for viewing the illuminated eye to be tested, and a photographing device detachably mounted on the viewing optical system. A position change of a predetermined part due to the change of magnification of the variable magnification optical system is measured to produce a signal representing the displacement. The signal representing the magnification of the variable magnification optical system is used to control an intensity of a flash light.