ISO 10110-7:2008 specifies the indication of the level of acceptability of surface imperfections within the effective aperture of individual optical elements and optical assemblies. These include localized surface imperfections, edge chips and long scratches.

ISO 10110-7:2008 applies to transmitting and reflecting surfaces of finished optical elements, whether or not they are coated, and to optical assemblies. It recognizes that permissible imperfections may be specified according to the area affected by imperfections on components or in optical assemblies.