[Why is the gray cataract called "star"?].

The adjective "starblind" has its origin in the 8th century. It describes the disease of eyes which are blind from cataract. This definition can be derived from the ancient Greek medicine and is the definition for a "starre" (which means inert) effusion behind the pupil. Martin Luther introduces the subject "Star" as a synonym for blindness. In the 18th century some linguists supposed this subject could be deducted from "starr blicken" (which means "to look motionless"). Even until today this misleading meaning is widespread although standard literature of linguistics as well as standard literature of the history of ophthalmology refer to the original meaning of this word.