IntroductionrnThe success of the therapy with ophthalmic drugs strongly depends on achieving enough drug concentration on the cornea for a sufficient period of time,but the typical delivery of drugs by eye-drops which currently account for more than 90% of all ophthalmic formulations is very inefficient and in some instances leads to serious side effects[1-3].Soft contact lenses have been proposed as a new vehicle for ophthalmic drug delivery[4].