The tamper evident ring is important because it tells the user that the product hasn’t been opened since filling. This guarantees that the bottle contains the original pharmaceutical and that nobody else has previously opened or used it. Although that’s important with all medications, it’s particularly important with eye drops, which shouldn’t be administered if they are contaminated. “Sometimes it’s the little ideas that make a big improvement to a product,” said Marek Misczcak, Head of Research & Development at Gerresheimer and primary packaging expert for ophthalmic applications.

“Before the modification, the tamper evident rings were loose on the bottle neck after opening. Unless the user removed the ring, it constituted a potential hazard. That’s why fixing the tamper evident ring in place is a good idea that improves safety.” None of the other eye drop bottle specifications have changed.