DROP-it eye drops DROP-it is a practical and hygienically packaged saline solution for eyes and contact lenses. The solution is sterile and free from preservatives and other substances that are harmful to the eye. When can you use Drop-It? Dry eyes To moisten occasionally dry eyes. Cleansing To wash dust, dirt and other particles out of eyes. Allergies The saline solution can be used to wash away pollen and other allergy-inducing particles and thus bring relief to the eyes. Contact lenses Drop-it can be used to wash and moisten all types of contact lenses and to moisten the eyes when removing contact lenses.