Firstly, it is not harmful to your contact lenses if you use your eye drops to clean your contact lenses temporarily instead of contact lenses solution. However, as far as i am concerned, it better for you not use eye drops, which might not have marked influence on your contact lenses. Because contact solution are designed to keep the contact lenses moist, help clean the contact lenses and kill the bacteria on the lenses. While eye drops can only help keep the lenses moist, but they won't help clean the lenses or have no function to kill the bacteria. Therefore, you'd better clean your contact lenses with professional cleanout fluid aimed at contact lenses as soon as possible in consideration for your eyes. Thanks for consulting.