Place of Birth
X-Men #1 (1963)
Uncanny X-Men #156 (1982), Classic X-Men #41-42 (1989), X-Men #39-42 (1967-1968)
Brown, glowing red when using powers
The width of Cyclops' optic blast is focused by his mind's psionic field with the same autonomic function that regulated his original eyes' ability to focus. As Cyclops focuses, the size of the apertures change and thus act as a valve to control the flow of particles and the beam's relative power. The height of Cyclops's eye-blast is controlled by his visor's adjustable slit. The beam's effective range is approximately 2,000 feet.Due to a head injury, Cyclops is unable to shut off his optic blasts at will and must therefore wear ruby quartz lenses to block the beams.