Source : Webster's Revised Unabridged Dictionary (1913)

Dim-sighted \Dim"-sight`ed\, a.
   Having dim sight; lacking perception. --
   {Dim"-sight`ed*ness}, n.

Source : WordNet®

dim-sighted
     adj : having greatly reduced vision [syn: {near-blind}, {purblind},
            {sand-blind}, {visually impaired}, {visually
           challenged}]