to blear the eye of

from The Collaborative International Dictionary of English v.0.48

Blear \Blear\, v. t. [imp. & p. p. {Bleared}; p. pr. & vb. n.
   {Blearing}.] [OE. bleren; cf. Dan. plire to blink, Sw. plira
   to twinkle, wink, LG. plieren; perh. from the same root as E.
   blink. See {Blink}, and cf. {Blur}.]
   To make somewhat sore or watery, as the eyes; to dim, or
   blur, as the sight. Figuratively: To obscure (mental or moral
   perception); to blind; to hoodwink.
   [1913 Webster]

         That tickling rheums
         Should ever tease the lungs and blear the sight.
                                                  --Cowper.
   [1913 Webster]

   {To blear the eye of}, to deceive; to impose upon. [Obs.]
      --Chaucer.
      [1913 Webster]