experimental gismu x1 is an eyewear used/worn by x2 serving purpose x3. It is a frame worn in front of the eyes and bears or does not bear transparent/semi-transparent/non-transparent shields for visual correction, eye protection, fashion, or entertainment. The shields are not necessarily lenses. Cf. le'otci or le'orlacni for a corrective type, which may include tidlacni for reading glasses and xrelacni for bifocal and trifocal glasses; badlacni for a protective type, which may include srulacni for goggles and solylacni for sunglasses; jadlacni for fashion glasses, which may include rekmeclacni for rimless glasses and solylacni; mincimdylacni for 3D glasses.