Visual looming syndrome "fear of pointy objects hitting the eye", "weird sensation behind the eyes", "difficulty in focusing on objects nearby, which are moving and are not operated by the observer, such as windscreen wipers or a pencil someone else is holding". In these studies visual looming syndrome is often referred as sharp edges eye syndrome (SEES). "Looming" is a term used in the study of the perception, as it relates directly to psychology. Looming refers to the rapid expansion in the size of any given image. As the image becomes increasingly large on the perceiver's retina, i.e., when an object "looms", there
International Association for the Advancement of Space Safety mission objectives is also included in the definition of safety. For example, unwanted collision of a satellite with another satellite, or with a space debris. Fig.1 shows the various fields of space safety, their national, international or global scope of interest, and the principal means for achieving safety (by design, or operations), although a mixture would be generally used. Although safety refers to threats that are non-voluntary in nature (design errors, malfunctions, human errors, etc.), security refers to threats which are voluntary (i.e. of aggressive nature such as use of anti-satellite weapons). In some languages a single term is used