The disclosure relates to an ocular treatment apparatus (10) for applying medicament into an eye has a vial (14) defining a vial cavity for holding medicament. A nozzle (12) is attached over an opening (18) in the vial and is in fluid communication with the vial cavity for releasing drops of medicament. A piston member (44) is suspended within the vial cavity for displacing a substantially predetermined volume of medicament through the nozzle for release into the eye.
