Abstract: Method for preparing corneal donor tissue preferably from animal sources, or other living species, such as pigs, for refractive eye surgery resulting in lenticules of predictable lens power and which prevent immunologic rejection. The method inludes the chemical treatment of the corneal donor tissue by a fixative agent, such as gluteraldhyde, which neutralizes immune response and which cross-links the tissue to prevent swelling. The tissue is stabilized for long periods by the chemical treatment and does not necessarily require freezing for lathing. The method allows for the preparation and storage of large numbers of corneal lenticules in a variety of predictable powers and sizes, preferably with preplaced sutures, for subsequent eye surgery, particularly for epikeratophakia grafts and penetrating keratoplasty (corneal transplants).

Abstract: There is disclosed a method and apparatus for sorting and classifying cans involving a first step of magnetically separating ferrous and bimetallic cans from aluminum cans. The aluminum cans are then carried to a collecting point. The next step is to separate the ferrous cans from bimetallic cans by immersing both in a liquid bath. The bimetallic cans and some punctured ferrous cans (such as large juice cans) are collected from the top of the bath and carried to a size separating device. The ferrous cans, which are normally fully opened, sink in a bath and are collected by a conveyor from the bottom of the bath. The bimetallic cans and the punctured cans are separated by sizing conveyors and are collected in separate collection devices. The result is to achieve a separation of the three basic classes of cans, reliably and inexpensively.