Short-sightedness or myopia was an eye condition that caused distant objects to appear blurred. It was also used to describe lack of imagination or foresight in an individual.
A peripheral symptom of transporter psychosis was diminished eyesight leading to acute myopia. (TNG: "Realm of Fear")
In 2286, the Federation President told James T. Kirk he and the crew of the HMS Bounty had saved Earth from its own short-sightedness by bringing forward George and Gracie to deal with the Whale Probe. (Star Trek IV: The Voyage Home).
In 2366, Admiral Alidar Jarok characterized Humans as a short-sighted people. (TNG: "The Defector")
In 2369, Kira Nerys told Admiral Rollman she thought Benjamin Sisko was short-sighted in hesitating to allow Tahna Los political asylum. (DS9: "Past Prologue")
Later that year, Gul Ocett called Nu'Daq short-sighted for considering that he had surrendered his component of an alien computer program for nothing, when it emerged that the program was still incomplete. (TNG: "The Chase")
In 2371, Elim Garak goaded Gul Dukat by claiming that Dukat's short-sightedness had held him back, and that Dukat's father had had the same problem. He later cited Dukat's own counter-insurgency program turning against him as evidence of this short-sightedness. (DS9: "Civil Defense")
In 2372, Weyoun told Sisko he was being short-sighted in dismissing the projected takeover of the Dominion by a band of rogue Jem'Hadar as not being his, Sisko's, problem. (DS9: "the Defector")
In 2375, Kathryn Janeway rethought her decision to destroy the Caretaker's array four years earlier and thus stranding the USS Voyager in the Delta Quadrant as being short-sighted. (VOY: "Night")
In 2376, Tuvok opined that it would have been short-sighted to destroy a graviton ellipse instead of studying it.(VOY: "One Small Step")