A woodworking jig is a device used to control the blade of a saw or the motion of another tool that will cut or otherwise alter wood. Simple jigs can be made from wood, and they can be custom-built for specific woodworking functions; a person can also buy a prefabricated woodworking jig made from wood, plastic, or even metal.
Normally the size of the pupil is the same in each eye, with both eyes dilating or constricting together. The term anisocoria refers to pupils that are different sizes at the same time. The presence of anisocoria can be normal (physiologic), or it can be a sign of an underlying medical condition.
Complete heterochromia is a fairly rare condition (in humans) whereby each iris is a distinctly different color, such as having one blue iris and the other brown. But this isnât why Bowieâs eyes looked different. Instead, the unusual appearance of Bowieâs eyes were due to a condition called anisocoria. Anisocoria is a condition characterized by an unequal size in a personâs pupils. In Bowieâs case, his left pupil was permanently dilated.