Your pupil distance or (PD) is the measurement of the distance between the centre of each pupil in mm.
In most cases your Optician will be happy to give you this measurement, although some have started charging for this service,
Your pupil distance or (PD) is the measurement of the distance between the centre of each pupil in mm.
In most cases your Optician will be happy to give you this measurement, although some have started charging for this service,