The goals of this study were to identify the constructs of visual literacy, to determine the amount of agreement or disagreement which exists concerning the identified constructs, and to provide a measure of relative importance among the identified constructs. The Delphi technique was employed to elicit information and opinions from a panel of visual literacy experts. A set of statements based upon the initial input of that group was further refined by the group through successive Delphi iterations. While the Delphi process was central to this research, basic Delphi techniques were expanded to include an extensive instrumentation phase and a validation of the results of the Delphi study through a readministration of the instrument with a different group of subjects. Among the conclusions are that: (1) the Delphi technique proved to be an appropriate methodology for identifying visual literacy constructs; (2) the Delphi technique was appropriate for bringing visual literacy experts to consensus regarding the elements, concepts, and constructs of visual literacy; (3) the very strong correlation between the level of agreement and the level of consensus indicates that there is the most agreement on those constructs which are the most highly accepted; (4) the set of agreed-upon statements emanating from this study can be the basis for restructuring a coherent theoretical base for visual literacy; and (5) notwithstanding statements to the contrary in the literature, there is a high level of agreement on most factors associated with visual literacy. (21 references) (GL)