When I did work experience at Specsavers, it was 50% dispensing and 50% optometry.
So, in the mornings I would work at the reception dealing with customers inquiries, handing out their ordered glasses and generally observing the dispensing floor.
For the rest, I would sit with an optometrist when they would perform eye test, asked questions about the course itself and the different equipment they use.
I also conducted a contact lens teach once since I wear contact lens so it was easy for me to help the customer.
So, overall, you ll be dealing with a lot of customers! If lucky they might even let you book appointment.