This International Standard defines basic terms relating to ophthalmic optics, specifically to semifinished spectacle lens blanks, finished spectacle lenses and fitting purposes.

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 materials and after optical processing are given in ISO 9802.

NOTE — In addition to terms and definitions used in two of the three official ISO languages (English, French and Russian), this International Standard gives the equivalent terms and definitions in the German language; these are published under the responsibility of the member body for Germany (DIN). However, only the terms and definitions given in the official languages can be considered as ISO terms and definitions.