myopic; short-sighted
Used both literally for nearsightedness and figuratively for a narrow, short-term perspective. Often carries a critical tone when used figuratively.
See also: 近視眼
With his short-sighted way of thinking, long-term success is difficult.
近視眼的な政策は将来に大きな問題を残す。
Short-sighted policies leave big problems for the future.