1.4 Additional Information CMS is committed to maintaining the integrity and security of health care data in accordance with applicable laws and regulations. Disclosure of Medicare Beneficiary eligibility data is restricted under the provisions of the Privacy Act of 1974 and HIPAA.
horizon-the line at which the sky and Earth appear to meet. apparent horizon, sensible horizon, visible horizon, skyline. linear perspective, perspective-the appearance of things relative to one another as determined by their distance from the viewer.
Perspective is also seen in the way the parallel lines of railway tracks appear to meet at a distant point, the vanishing point. This point lies on a line, called the geometrical horizon, at the level of the viewer's eye.