The WCSM withdrew from accredited qualifications as of 31 July 2021 and no longer offers optical technician and optical assistant qualifications.
ABDO College offers similar qualifications. Please see the ABDO College website:
WCSM Level 4 Diploma for Optical Technicians Past Papers
WCSM Level 3 Optical Support Past Papers
WCSM Level 4 Diploma for Optical Assistants Past Papers