Material declaration

Acetate type, and whether the frame is cut or moulded

Plating certificate

Thickness in microns on plated frames, because that is the wear life

Measurement record

Lens width, bridge and temple length, across the batch

Symmetry record

That the frames were checked for twist, not only for size

Lens conformity

Which standard the lens meets, and who dispensed it

Coating specification

Which layers, and in what order, on a coated lens

Revision statement

Which revision the batch was made to, and which lens it takes

Case specification

Shell and lining, because the lining touches the coating

An illustrative list for a fictional range. A real programme agrees which documents are required, in what form, and how long they are retained.

The one that is most often missing.

The symmetry record. A batch can measure correctly and still contain twisted frames, because the measurements are taken on one side. Twist is what the wearer notices and what a measurement sheet will not show.

Why the case belongs on the list.

Because it is the only thing standing between a coated lens and a bag. A frame supplied with an unsuitable case returns as a scratched lens, and the lens is the expensive part.