ONE of the many stressful aspects of chronic illness is the need for regular pills or injections. But if a project now under way succeeds, a wristwatch-like laser device could activate release of precise doses of a drug whenever the patient needs them.
Polymer implants that release a steady stream of a drug as they degrade are already available, and work well for treating certain forms of brain tumour. But for conditions that require large drug doses at specific intervals patients need a way of turning the flow of drug from the polymer implant on and off. The question is…
