Abstract: A variable focus optical apparatus including a rigid, curved, transparent optical component; two transparent, distensible membranes attached to a periphery of the rigid optical component to define two cavities, a first cavity between the rigid optical component and a first membrane and a second cavity between the first membrane and a second membrane; and a variable amount of fluid each of the cavities, and a reservoir containing additional fluid and in fluid communication with the cavity, wherein the reservoir is configured to provide injection of fluid into the cavity or withdrawal of fluid out of the cavity in response to a force or an impulse.

Abstract: A fluid-filled adjustable contact lens is provided. An exemplary contact lens includes a lens chamber configured to be positioned on a pupil of a user wearing the contact lens; a reservoir fluidly connected to the lens chamber; an actuator configured to transfer fluid back and forth between the lens chamber and the reservoir; a sensor configured to sense movement from the user and transmit a control signal when a predetermined movement is performed by the user; and a processor configured to actuate the actuator upon receipt of the control signal from the sensor.