This paper demonstrates fatigue assessment based on eye blinks that are detected by dye-sensitized photovoltaic cells. In particular. the sensors were attached to the temple of eyeglasses and positioned at the lateral side of the eye. They are wearable. https://www.spidertattooz.com/Orly-Nail-Lacquer-Combo-Here-Comes-The-Sun-Happy-Camper-p32246/