A significant patient population requires the long-term use
of eye-drops multiple times a day. Maintaining the sterility of
eye-drops is important for patient health. Single-use doses
are expensive and preservatives can cause allergies and
irritation, but the intelligent design of multi-dose bottles
provides a viable means of delivering safe, preservativefree
eye-drops, say Lilia Petit Ben Saidane and Benjamin
Quaglia of Nemera.