Abstract: A portable ocular screening device for tracking macular degeneration having a portable body including a graduated focusing mechanism including an inner chamber. The apparatus also includes a monocular eyepiece disposed on the graduated focusing mechanism and a display screen and a processor disposed within the inner chamber. Additionally, a method of monitoring macular degeneration includes providing a monocular screening device having a display screen disposed within a body of the screening device. The method further includes displaying an image and also providing a prompt in response to the display of the image. Subsequently, the method includes receiving a response via an input device, the response indicative of a user's perception of the image and evaluating the response to determine if the response indicates a user accurately perceived the first image.

Abstract: Embodiments include insulating glazing units with a photovoltaic cell structure disposed within and related methods. In some embodiments, the insulating glazing unit can include a first transparent pane and a second transparent pane. The insulating glazing unit can further include an internal space disposed between the first and second transparent panes and a spacer unit disposed between the first and second transparent panes. The spacer unit can be disposed adjacent to the perimeter of the first transparent pane and the second transparent pane. The spacer unit can have an inward surface facing the internal space. A photovoltaic cell structure can be disposed between the first and second transparent panes. The photovoltaic cell structure can be disposed over at least a portion of the inward surface of the spacer unit. The photovoltaic cell structure can include a photovoltaically active surface facing the internal space. Other embodiments are also included herein.