Crossword Clue:

BLEAR to dim to reduce the light of

AnswerCrossword Clue
NIGHTVISIONAbility to see in dim light
HELIUMLight element, and a hint to how the answers to starred clues have been inflated
ELICITORYConducive to bringing to light.
SPECTROSCOPICALPertaining to an instrument used to disperse light beams.