An adjustable focus lens apparatus includes a transparent lens body having a periphery, an attachment device adjacent to the periphery of the lens body for mounting the lens apparatus in an eye, and a plurality of micromotor devices spaced equally about and connected between the periphery of the lens...http://www.google.fr/patents/US5108429?utm_source=gb-gplus-shareBrevet US5108429 - Micromotor actuated adjustable focus lens
