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: 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 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: 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 &mgr;A or more but not exceeding 300 &mgr;A.