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 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 object of the present invention is to provide therapeutic agents for retinochoroidal disorders comprising a steroid as an active ingredient and having improved effects and dosage forms for treating the retinochoroidal disorders whereby the steroid can be easily administered. The present invention relates to therapeutic agents for the retinochoroidal disorders comprising betamethasone or hydrocortisone as an active ingredient and to subconjunctival injections comprising the steroid as an active ingredient.

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.

Abstract: In surgery of the vitreous body in an eyeball of a human body, a burden on and time of a surgeon is suppressed from being spent, a burden on the eyeball of a patient is greatly reduced, and further, the possibility of a complication after the surgery is also lessened. A holding apparatus 1, which is characterized in that it comprises eyelid opener portions 10a and 10b for pulling and opening upper and lower eyelids, a lens ring 30 for holding a surgical contact lens on the eyeball, and connecting portions 40a and 40b for connecting the eyelid opener portions 10a and 10b with the lens ring 30 of the surgical contact lens so that the surgical contact lens is held on the eyeball, is set on the eyeball of the patient, which makes it unnecessary to stitch of the lens ring 30 on the eyeball.

Abstract: In a treatment laser apparatus, when the data on a laser spot magnification of a contact lens CL to be used for treatment of a patient's eye E is input by means of a controller 7 and the data on a spot size of treatment laser beams in air is input by means of a change knob 4, a real spot size of the laser beams which is irradiated to an affected part of the patient's eye E is calculated in a control section 30 based on the both inputted data, and the calculated result is displayed on a display section 20.

Abstract: An instrument for removing proliferative membranes in a treatment for proliferative vitreoretinal disorders includes an ophthalmic treatment tool for using in an ophthalmic surgery, the tool including: a grip portion; a rod-shaped body attached to one end of the grip portion; an elastic body fitted along a direction toward a front end of the rod-shaped body to the front end side of the rod-shaped body; and hard inorganic fine-grains or particles fixed on a tapered tip of the elastic body.

Abstract: An ophthalmic surgical apparatus for vitreous surgery in the eyeball comprises a probe provided with a guide knife, having an end portion formed in a predetermined curve, and a dissecting knife movable along the curve of the guide knife to dissect proliferated membrane, moving device that moves the dissecting knife so as to reciprocate between an initial position and the end portion of the guide knife.

Abstract: An ophthalmic laser apparatus has a proper exit angle from a probe to prevent a sclera from being damaged when the probe is used to treat an eye of a patient. A laser beam emitted from a laser oscillator is directed to a light cable receptacle connector by an optical system. The laser beam is directed to a delivery optical system or a probe by a light cable having a connecting part at one end thereof to be connected to the light cable receptacle connector. The probe is bent near an end thereof and the end of the probe is generally spherically shaped.

Abstract: An intraocular lens comprises an artificial crystalline lens and a diamond-like carbon film coated on the surface of the artificial crystalline lens.