BLINKERED

Adjective

blinkered (comparative more blinkered, superlative most blinkered)

Wearing blinkers or blinders.

(figuratively) Having tunnel vision; unable to see what is happening around one.

Verb

blinkered

simple past tense and past participle of blinker

Source: Wiktionary

BLINKER

Blink"er, n.

1. One who, or that which, blinks.

2. A blinder for horses; a flap of leather on a horse's bridle to prevent him from seeing objects as his side hence, whatever obstructs sight or discernment. Nor bigots who but one way see, through blinkers of authority. M. Green.

3. pl.

Definition: A kind of goggles, used to protect the eyes form glare, etc.

Source: Webster’s Unabridged Dictionary 1913 Edition