VISUAL FIELD LOSS Gottlieb Visual Field Awareness System Help for the Hemianoptic Field Loss Patient The application of a prism to enhance visual field has existed for many decades. However, the development of the Gottlieb Visual Field Awareness System (Dr. Daniel Gottlieb, O.D., FCOVD, FAAO) has greatly improved the success in aiding patients after hemianoptic visual field loss. The novel approach places a small wafer of base out prism in a round shape on the side of the visual field loss. In this manner, as the patient looks to the side of their visual field loss the image is shifted into their still functional field as they make natural scanning movements. The Visual Field Awareness System has been helpful for patients with hemianoptic field loss. The lens is mounted in one lens on the side of the loss. It shifts the image about twenty degrees nasally allowing it to be detected within the remaining functional field as the patients makes mild scanning movements. Along with the prism system therapy is prescribed to assist adaptation and improve scanning.