In the management of these diseases of the eye, the Roman practitioners used, as we shall afterwards see, bleeding, antiphlogistics, scarification, and other appropriate constitutional and local treatment. But the practical part of their treatises, referring to ophthalmic affections, is specially loaded with collyria—professedly of use in almost every stage of every disease of the eye.[438] Galen speaks of Asclepiades describing in his works a plentiful forest of collyria (_collyriorum silva_).[439] In his book, _De Compositione Medicamentorum secundum Locos_, Galen has himself left us formulæ for upwards of two hundred of the ancient collyria. Ætius gives as great, if not a greater number. The “Opus de Compositione Medicamentorum” of Myrepsus contains recipes for eighty-seven ophthalmic collyria; and the works of Scribonius Largus, Celsus, Actuarius, Oribasius, Alexander Trallianus, Marcellus, Paulus Ægineta, etc., present us with abundance of formulæ for the same class of preparations. These collyria were composed of very various,[440] and in some instances of very numerous, ingredients. But most of them which had attained any great degree of reputation, seem (like the compound formulæ, or prescriptions in our modern pharmacopœias), to have each passed under a short specific name, by which they were no doubt readily and generally recognised by the profession, and perhaps also by the public, in those ancient times. The specific appellations of the individual collyria were derived from different sources.