Abstract:
Described here are devices, systems, and methods for treating meibomian gland disease and/or blepharitis by providing intranasal stimulation. Generally, the devices may deliver electrical stimulation to the nasal mucosa. Intranasal stimulation may unblock obstructed meibomian glands and increase the lipid content of tears, both acutely during stimulation and subsequent to intranasal stimulation. The methods may include an initial round of stimulation to unblock obstructed meibomian glands, and subsequent shorter rounds of stimulation to cause meibum secretion and maintain the open glands.
Abstract:
Described herein are devices and methods of use thereof for treating dry eye, tired eye, or other forms of ocular discomfort such as from contact lenses. The methods generally include applying spatially and/or temporally patterned stimulation to one or more anatomical structures located in an ocular or nasal region. The electrical stimulation may elicit a reflex that activates the lacrimal gland or may directly activate the lacrimal gland or nerves innervating the lacrimal gland to produce tears. The devices may be implantable or handheld, and may be configured to deliver the spatially and/or temporally patterned stimulation patterns described.
Abstract:
A stimulation system for treating a condition (e.g., dry eye, Meibomian gland disease) of a subject includes a stimulator configured to deliver a stimulus to external facial tissue of the subject, at least one sensor configured to detect a characteristic of the subject, and a control system in communication with the sensor and configured to adjust the stimulus at least partially based on the detected subject characteristic. In some variations, the control system may be configured to adjust the stimulus at least partially based on a detected environmental condition. The stimulator may be configured to activate a nerve of the subject, thereby increasing tear production. The stimulation system may, for example, include a device configured to be worn by a subject such as eyeglasses or a mask, or held by a subject such as handheld stimulator device.
Abstract:
Generally, a machine may include a processor and a memory connected to the processor, where the memory stores instructions executed by the processor to determine first and second properties related to dry eye symptoms of a patient. The properties may be used to form a dry eye forecast. A treatment recommendation may be selected based at least in part upon the dry eye forecast. The treatment recommendation may be supplied to a device.
Abstract:
Described here are systems, devices, and methods for implanting a nasal stimulator into nasal tissue and electrically stimulating nasal tissue. In some variations, a nasal microstimulator implantation system may comprise an implantation tool and an implantable microstimulator. An implantation tool may comprise a shaft and features to releasably attach a microstimulator. A microstimulator may comprise a passive stimulation circuit and one or more electrodes. In other variations, a nasal implantation system may additionally comprise one or more additional devices, such as a controller, an electrical probe, and/or a dissection tool.
Abstract:
Described here are devices, systems, and methods for increasing tear production by stimulating the cornea, conjunctiva, and/or subconjunctiva. In some variations, the devices may be in the form of a contact lens. The contact lens may comprise a lens body and a stimulator chip, where the stimulator chip is embedded in the lens body. An external power source wirelessly transmits energy to the stimulator chip, where the stimulator chip may convert the energy to an electric waveform to stimulate the cornea, conjunctiva, and/or subconjunctiva. Stimulation may activate the lacrimal reflex to increase tear production. The devices and systems for increasing tear production may be used in methods of treating dry eye, reducing the symptoms of tired eye, increasing comfort for contact lens wearers, and extending the number of years a contact lens user can wear contacts. Also described are methods of manufacturing a contact lens.
Abstract:
Described herein are electrical stimulation patterns and methods of use thereof for treating dry eye disease, tired eye, or other forms of ocular discomfort. The methods generally include applying patterned stimulation to an anatomical structure located in an ocular region or a nasal region to increase tear production.