In this study, the views of the Prospective Science Teacher (PST)s about the human eye were examined. The following data collection tools were used: the Word Association Test (WAT), open ended questions, drawing technique, two tiered question item and an interview about concepts. The data of the study whose sample consisted of 34 PSTs were analyzed qualitatively and calculated repetition frequencies of their statements. Although most of the PSTs had taken an undergraduate course which included the subject of the human eye, it was determined that they possessed insufficient knowledge-background and alternative concepts about the structure of the human eye, the eye defects, its' treatment and vision. Having discussed these reasons for the lack of sufficient knowledge background, suggestions were presented to promote effective teaching.