A wireless communication device may execute a response process and a search process with a first operation being performed as a trigger in a first period after the first operation. In one application the retina photoreceptor mosaic or Bruch’s membrane is disrupted in such pattern that minimizes loss of visual functioning but reduces metabolic load of the outer retina. A connecting hose releasably couples the collection bag to the fan outlet of the blowervac to fill the collection bag with debris picked up by the blowervac when the blowervac operates in the vacuum mode.