Abstract: A microscope apparatus includes: a microscope unit; a chamber, arranged next to the microscope unit, that houses a specimen to be observed by the microscope unit; a humidifier, connected to the chamber, that humidifies the interior of the chamber; a chamber temperature sensor that measures a temperature within the chamber; a microscope temperature sensor that measures a temperature of the microscope unit; and a determination device that determines whether or not observation by microscope is possible based on outputs of the chamber temperature sensor and the microscope temperature sensor.

Abstract: A microscope apparatus includes: a microscope unit; a chamber, arranged next to the microscope unit, that houses a specimen to be observed by the microscope unit; a humidifier, connected to the chamber, that humidifies the interior of the chamber; a chamber temperature sensor that measures a temperature within the chamber; a microscope temperature sensor that measures a temperature of the microscope unit; and a determination device that determines whether or not observation by microscope is possible based on outputs of the chamber temperature sensor and the microscope temperature sensor.

Abstract: An eye examination apparatus comprises an ultrasonic transmitter for transmitting ultrasonic wave radiation to an area around an eye to be examined, an ultrasonic receiver for receiving the reflected wave radiation of the ultrasonic wave radiation, and a judging device for judging whether the eye to be examined is the right eye or the left eye based on the result of the reception by the ultrasonic receiver.

Abstract: An eye-refractometer device has a beam splitter, a projection optical system provided in one light path of the beam splitter for projecting a light beam into the pupil of an eye to be examined and scanning the light beam, a condenser optical system provided in the other light path of the beam splitter for receiving the reflected light from the retina of the eye, the condenser optical system comprising a condenser lens, a diaphragm member and a light-receiving member, and a signal processing system for processing the signal from the light-receiving member. Light beam rotating means for rotating the light beam about the optic axis is provided between the beam splitter and the eye. The light-receiving member is fixedly disposed at a position substantially conjugate with the cornea of the eye with respect to the condenser lens and a plurality of light-receiving elements are provided on the light-receiving surface of the light-receiving member off the optic axis.

Abstract: An eye-refractometer device includes a light receiving member having a pair of photoelectric elements for detection of astigmatic axis and a pair of photoelectric elements for detection of diopter of an eye provided on the light receiving surface of said member off the optical axis of a condenser lens. Said pair of astigmatic axis detection photoelectric elements are positioned on a straight line normal to the scanning direction of the beam projected through said projection optical system. Said pair of diopter detection photoelectric elements are positioned on a line extending in said scanning direction. The eye-refractometer device has a highly improved accuracy of measurement of diopter.