Abstract: The present application describes the addition of various feedback mechanisms including visual and audio feedback mechanisms to an ophthalmic diagnostic device to assist a subject to self-align to the device. The device may use the visual and non-visual feedback mechanisms independently or in combination with one another. The device may provide a means for a subject to provide feedback to the device to confirm that an alignment condition has been met. Alternatively, the device may have a means for sensing when acceptable alignment has been achieved. The device may capture diagnostic information during the alignment process or may capture after the alignment condition has been met.

Abstract: Among other items, an illumination device (110) is [provided] for an observation device (100) having one, two or more observation beam paths, each with at least one observation beam bundle, in particular for an operating microscope, having at least one light source (112) for producing at least one illumination beam path with at least one illumination beam bundle (121, 122, 123) for illuminating an object to be observed, in particular, an eye to be observed, in addition having at least one illumination optics unit (11)*, which is constructed according to the Köhler principle of illumination, as well as an objective element (119), wherein the at least one illumination beam path or the at least one illumination beam bundle (121, 122, 123) runs coaxially to an observation beam path or observation beam bundle.