Abstract: A method for improving visual ability of even a patient's non-operative eye is provided. The electrical stimulation method for improving vision of patient's eyes comprises placing an electrode in one of patient's right and left eyes, and outputting an electrical stimulation pulse signal from the electrode placed in the patient's eye under a predetermined stimulation condition to stimulate cells constituting a retina or optic nerve, thereby improving vision of the other patient's eye with no electrode being placed.

Abstract: Methods, devices and systems for draining fluid from the eye and/or for reducing intraocular pressure. A passageway (e.g., an opening, puncture or incision) is formed in the lamina cribosa or elsewhere to facilitate flow of fluid from the posterior chamber of the eye to either a) a subdural location within the optic nerve or b) a location within the subarachnoid space adjacent to the optic nerve. Fluid from the posterior chamber then drains into the optic nerve or directly into the subarachnoid space, where it becomes mixed with cerebrospinal fluid. In some cases, a tubular member (e.g., a shunt or stent) may be implanted in the passageway. A particular shunt device and shunt-introducer system is provided for such purpose.

Abstract: Methods, devices and systems for draining fluid from the eye and/or for reducing intraocular pressure. A passageway (e.g., an opening, puncture or incision) is formed in the lamina cribosa or elsewhere to facilitate flow of fluid from the posterior chamber of the eye to either a) a subdural location within the optic nerve or b) a location within the subarachnoid space adjacent to the optic nerve. Fluid from the posterior chamber then drains into the optic nerve or directly into the subarachnoid space, where it becomes mixed with cerebrospinal fluid. In some cases, a tubular member (e.g., a shunt or stent) may be implanted in the passageway. A particular shunt device and shunt-introducer system is provided for such purpose.

Abstract: A method and system for continuous infusion of a dense fluid (e.g., a perfluorocarbon) during performance of a vitrectomy procedure. A vitrectomy cutter device is used to remove vitreous humor from the posterior chamber of the eye and a continuous flow of the dense fluid is infused in the posterior chamber concurrently with the removal of the vitreous through the vitrectomy cutter device. In a recirculating embodiment, a re-circulation loop is formed whereby particles of vitreous removed from the eye are filtered out and the dense fluid is then re-circulated back into the posterior chamber of the eye. The dense fluid may be oxygenated before entering the eye.