Methods for treating and preventing ocular conditions by administering an compound to the vitreous chamber of a patient at risk of, or suffering from, the ocular condition. One ore more self-similar streams of data units may be generated according to values of selected parameters for the streams, such as the Hurst parameter. These state machines also process larger commands and responses that may be divided into multiple frame segments. The post adsorption ultrafiltrate stream is selectively combined with the filtered blood stream and together with the filtered blood stream is returned to the mammal.