This paper describes an exhibit, "Layered Worlds: The Look of Alzheimer's," which uses photography as the medium to interpret Alzheimer's disease visually. The goal was not to photograph the victims of the disease, but to interpret the experience of Alzheimer's for the patient, family members, and caregivers. The metaphor of layers was used to convey the experience of a world of time--of layers of past, present, and future, out of touch with one another, and whose sequence is out of kilter. Images with shallow depth of field expressed the world of both patient and caregiver, a world where a momentary glimpse of recognition is surrounded by fogginess and the blur of forgetting. Carousel images conveyed the confusion as well as the dignity of the patient. Images reflected in windows were used to show the experience of family members who move in and out of varied worlds, the day-to-day world with its cares and responsibilities and that of the patient, a world of its own. A series of "cranberry" photographs, with rich colors and sharp images, spoke of a life to be affirmed. The work of other artists who have interpreted this disease are mentioned as well. (DGM)