Eye drops are a form of the medicinal product for the treatment of eyes. Through the one drop of an oily or aqueous solution into the conjunctival SAC the drug comes quickly and easily in the eye, to work there. If a foreign body is trigger of the pain, this can be removed using special instruments and under local anesthesia by eye drops by an ophthalmologist. Eye drops be applied for a wide range of problems, as for example in treatment of dryness and irritation of the eye, with the Green star as well as conjunctivitis and keratitis. But among other things the use of eye drops in the eye reflection there are also some applications that are not so well known. An eye mirroring the eye background is examined and the Interior of the eyeball, which are usually not visible from the outside, are made visible. The eye reflection itself is actually not dangerous and brings only a very low risk. The application of pupil-widening eye drops is usually harmless, but can in Individual cases cause an increase in intraocular pressure. Participation in road traffic or use machines after the administration of pupil-widening eye drops during eye mirroring is up to the full decay not possible due to their effect. Pathological changes can be detected in an eye mirroring. Here the eye background is lit, so that the various structures such as the retina, Choroid, there, yellow spot and the supplying blood vessels to see. The investigation is only possible if there are no cloudiness of the cornea or the lens, as well as bleeding inside the eye. Another quite unknown application area is in the diagnosis of retinopathy of prematurity. This diagnosis can be made only by an ophthalmologist. First the examination room is darkened, and administered special eye drops, which expand the pupil. The eye doctor administered local anesthetic eye drops, then install a lid lock or a lid hook to keep the eye open. This is painless but very unpleasant for the child due to the numbing eye drops. The actual diagnosis of retinopathy of prematurity via a mirror of eye, the doctor on the retina of the eye of children can look through that. Here again are used eye drops. In children and adults, it comes again to minor injury of the cornea. You should of course always a doctor, when it comes to an eye injury, but usually grow smaller injuries usually after one or two days from alone too. Until then, eye ointment and cooling compresses help. The surface of the cornea to heal not alone, it may be necessary to plane off these mechanically or to pay off with a laser, so the top layer can heal.