This International Standard defines basic terms relating to ophthalmic optics, specifically to semifinished spectacle lens blanks, finished spectacle lenses and fitting pur-poses.
Terms relating to processes and material for fabrication and surface treatment (other than some specific coatings defined in clause 15) and terms relating to defects in ma-terials and after optical processing are given in ISO 9802.
NOTE — In addition to terms and definitions used in two of the three of-ficial ISO languages (English, French and Russian), this International Stand-ard gives the equivalent terms and definitions in the German language; these are published under the respon-sibility of the member body for Ger-many (DIN). However, only the terms and definitions given in the official lan-guages can be considered as ISO terms and definitions.