Abstract: The present invention refers to the light ring target mire (8) used for accurate measuring of the radii of curvature of spherical and non spherical reflective surfaces, with a fixation target for the patient, holes that allow the observation by the slit lamp (7), holes to be illuminated (4), using an illumination system composed by a header which has an exit lens from the illumination system, focused filament, an intermediary circle and a light stop with an useful area for the target mire, being alternatively projected with arc shaped rings, or passing through rings in a precise circumlinear shape, allowing to be used with different types of illumination systems, providing measurements of any reflective surface, not being limited to ocular exams.

Abstract: A luminous projecting device for the topography of spherical and non-spherical reflecting surfaces, adapted to a slit lamp, and/or any other focused and projected light source illumination system, which uses the illumination system of this equipment as its own lighting source, and evaluates the reflected images of the continuous, concentric and illuminated target circles projected on the surfaces intended to be measured, with several dimensions in accordance with the specific image size, and its distance to the eye.