The Collaborative International Dictionary of English v.0.48:

Purblind \Pur"blind`\, a. [For pure-blind, i. e., wholly blind.
   See Pure, and cf. Poreblind.]
   1. Wholly blind. "Purblind Argus, all eyes and no sight."
      --Shak.
      [1913 Webster]

   2. Nearsighted, or dim-sighted; seeing obscurely; as, a
      purblind eye; a purblind mole.
      [1913 Webster]

            The saints have not so sharp eyes to see down from
            heaven; they be purblindand sand-blind. --Latimer.
      [1913 Webster]

            O purblind race of miserable men.     --Tennyson.
      [1913 Webster] -- Pur"blind`ly, adv. --
      Pur"blind`ness, n.
      [1913 Webster]

WordNet (r) 3.0 (2006):

purblind
    adj 1: having greatly reduced vision [syn: dim-sighted, near-
           blind, purblind, sand-blind, visually impaired,
           visually challenged]
    2: lacking in insight or discernment; "too obtuse to grasp the
       implications of his behavior"; "a purblind oligarchy that
       flatly refused to see that history was condemning it to the
       dustbin"- Jasper Griffin [syn: obtuse, purblind]

Moby Thesaurus II by Grady Ward, 1.0:

65 Moby Thesaurus words for "purblind":
   authoritarian, bigot, bigoted, blear-eyed, bleary-eyed, blind,
   blindfold, blindfolded, borne, closed, constricted, cramped,
   creedbound, dark, deaf, deaf to reason, dim, dim-eyed, dim-sighted,
   dull-sighted, fanatical, feeble-eyed, filmy-eyed, gravel-blind,
   half-blind, hidebound, illiberal, imperceptive, impercipient,
   insensible, insular, little, little-minded, mean, mean-minded,
   mean-spirited, mind-blind, mole-eyed, myopic, narrow,
   narrow-hearted, narrow-minded, narrow-souled, narrow-spirited,
   nearsighted, nonunderstanding, parochial, petty, provincial,
   sand-blind, shortsighted, sightless, small, small-minded,
   straitlaced, stuffy, unapprehending, uncatholic, uncharitable,
   uncomprehending, undiscerning, ungenerous, unliberal, unperceptive,
   weak-eyed