Abstract: Unique eyewear is disclosed having electronically controlled lens structures in which the optical transmissivity thereof is automatically adjusted to a level correlated with the level of ambient light. The preferred eyewear includes a pair of lens having liquid crystal material therebetween, a control circuit having a sensitivity-adjustable, ambient light sensor, and a power supply. The preferred power supply includes a battery and a photocell array distributed about the periphery of the lens structures. In use, the control circuit senses ambient light level and adjusts the transmissivity of the lens structure to a level correlated with the ambient light level.