Color-changing contact lens could enhance monitoring of eye disease treatments
(PHYSorg.com Chemistry)

For all the good they do, eye drops and ointments have one major drawback: It`s hard to tell how much of the medication is actually getting to the eye. Now in a study appearing in ACS Applied Materials & Interfaces, scientists report that they have developed a contact lens that changes color as drugs are released. This visual indicator could help eye doctors and patients readily determine whether these medications are where they should be.