Kowa Company Limited

Takashi Hirano

Tadashi Ichihashi

Atsushi Kojima

Kennosuke Cyujou

Keijiro Jinmon

An ophthalmological measurement apparatus wherein the interior of a patient's eye is irradiated with a laser beam and the scattering of the laser beam is measured to determine protein concentration in the oculi anterior. The apparatus is provided with scanning means for scanning the measurement zone during alignment of the eye as well as during measurement. During alignment the measurement zone is scanned at high speed by the laser beam and at the same scanning width as the scanning width used during measurement, and the signal obtained from the photosensor at this time is processed to provide information on and an indication of the appropriateness of the state of alignment. This makes it possible to observe any harmful light rays that will actually appear during measurement.

Ophthalmological alignment and measurement apparatus

Automatic perimeter for eyesight examination

An eye fixation monitor for ophthalmological examination is provided which is capable of automatically monitoring the eye fixation without the ophthalmologist being required to initialize the eye fixation value. The eye fixation is monitored using deviation signals derived on the basis of the eye image formed on photoelectric transducers. The eye fixation monitor is provided with means for inducing the patient to assume the eye fixation state, and to resume the monitoring automatically after the examination has been interrupted by excessive deviation of the line of sight from the eye fixation target.

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Shiki, Japan

Takashi Hirano