BS EN ISO 18527-2. Eye and face protection for sports use. Part 2. Requirements for eye protectors for squash and eye protectors for racquetball and squash 57— 27 стр.
Ophthalmic optics - Uncut finished spectacle lenses - Part 5: Minimum requirements for spectacle lens surfaces claimed to be abrasion-resistant (ISO 8980-5:2005)