C 2.1.1 Optometrists and Dispensing Opticians are reminded that Tropicamide and other pupil dilating drugs are prescription only medicines (POMs). As such the supply of these drugs is controlled by law and optometrists (and OMPs), are the only members of the practice team who legally are responsible for the instillation of these POMs. The use of pupil dilating eye drops should always, therefore, be done under the direction and supervision of an optometrist (or doctor/OMP).