Abstract: An apparatus and method for preventing, controlling and/or treating vision disorders, such as eye fatigue and myopia, comprises a panel or a plurality of panels with a contrast stimulus or contrast stimuli presented to a peripheral vision or peripheral visions. A contrast stimulus may be a spatial frequency contrast, a luminance contrast, a translucency/transparency contrast, a depth contrast or a spectral contrast. The panel is configured to fit on screens, monitors, televisions, displays and the like. The panel may be adapted to fit on hats, glasses, the head, and the like. The panel may be constructed to be portable and stand alone, to be used while viewing a primary object, such as a visual display monitor, a book, or the like.

Abstract: Damped structures with isolators such as, for example, total vehicles, are analyzed and automatically optimized using a model representing the structure, the model possibly consisting of both rigid and flexible components, together with initial values for isolator design variables, a set of design constraints, and an optimization criterion. Each isolator may have frequency dependent or frequency independent parameters. Excitations may come from a combination of internal and external sources that may be expressed as deterministic or random functions. Finite element modeling is used to determine eigenvectors of flexible finite element components. A total system model is obtained using the rigid component parameters, eigenvectors of flexible components, and spring-damping parameters of isolators. Vibration analysis using the total system model yields system frequency responses and an optimization function.