1. A system for direct imaging, diagnosing and removing of abnormal cells in a target tissue, comprising: a disposable optical speculum which integrates a light collimation element guide for dark field illumination with an optical window; an image acquisition system having the speculum assembled on and mechanically secured thereto, the image acquisition system arranged to capture at least one of a single image or multiple images or video of cells within the target tissue using at least one of bright field or dark field ring illumination divided into independently operated segments to obtain a plurality of data sets; and an image analysis and control unit in communication with the image acquisition system, the image analysis and control unit analyzing the data sets and applying algorithms to the data sets for diagnosing abnormal cells.