The Collaborative International Dictionary of English v.0.48:

Long-sighted \Long"-sight`ed\, a.
   1. Able to see objects at a great distance; hence, having
      great foresight; sagacious; farseeing.
      [1913 Webster]

   2. Able to see objects distinctly at a distance, but not
      close at hand; hypermetropic.
      [1913 Webster]

WordNet (r) 3.0 (2006):

longsighted
    adj 1: capable of seeing to a great distance [syn: eagle-eyed,
           keen-sighted, farseeing, longsighted]
    2: planning prudently for the future; "large goals that required
       farsighted policies"; "took a long view of the geopolitical
       issues" [syn: farseeing, farsighted, foresighted,
       foresightful, prospicient, long, longsighted]

Moby Thesaurus II by Grady Ward, 1.0:

57 Moby Thesaurus words for "longsighted":
   acute, anticipant, anticipatory, apperceptive, appercipient,
   argute, asquint, astigmatic, astute, blink-eyed, blinking, blinky,
   clairvoyant, cogent, discerning, divinatory, farseeing, farsighted,
   forehanded, foreknowing, foreseeing, foresighted, forethoughted,
   forethoughtful, incisive, intuitive, longheaded, mope-eyed, myopic,
   nearsighted, penetrating, perceptive, percipient, perspicacious,
   perspicuous, piercing, poor-sighted, precognitive, precognizant,
   prepared, presbyopic, prescient, provident, providential, prudent,
   ready, sagacious, shortsighted, squinch-eyed, squint-eyed,
   squinting, squinty, strabismal, strabismic, trenchant,
   understanding, winking