An optical device includes a lens holding member that holds a lens and that is movable in a direction along a plane that is orthogonal to an optical axis of the lens, and an actuator that moves the lens holding member in the direction along the plane. In the optical device, the actuator includes an actuator element, formed of electroactive polymer, and a connecting member that connects the lens holding member to the actuator element.

 
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< Devices to facilitate alignment and focusing of a fundus camera

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