Answer:

optical

Answer	Crossword Clue
OPTICAL	Like some scanners
OPTICAL	Kind of scanner
OPTICAL	Kind of effects

OPTICAL	Sort of illusion
OPTICAL	Kind of illusion
OPTICAL	Like some film effects
OPTICAL	Of the peepers
OPTICAL	Pertaining to sight
OPTICAL	Kind of computer or disk
OPTICAL	Visual
OPTICAL	.. illusion

OPTICAL	Film's special effect
OPTICAL	Frame-shop descriptor
OPTICAL	Of vision
OPTICAL	Like some illusions
OPTICAL	Type of lens.
OPTICAL	A kind of illusion.
OPTICAL	Visual.
OPTICAL	... illusion.

OPTICAL	... illusion
OPTICAL	Re sight
OPTICAL	Kind of glass
OPTICAL	Kind of mouse
OPTICAL	Like some thin fibers
OPTICAL	Like spectroscopes and microscopes
OPTICAL	Type of illusion
OPTICAL	Like CD storage