Blinders

[Sarah]

Absurdly large women's sunglasses that mask the face from proper evaluation. Most notably worn by women of substandard appearance. Unlike horse blinders, these do not block the vision of the wearer but that of the passerbyer. Synonyms: Slut Goggles.

[Zipporah Schumaker]

traffic; 6 stove pipes put over [metropolitan] stop lights to prevent/control light jumping. -taken from those seen over a horses eyes to [narrow] his/her [peripheral] vision.

[Sonia]

A pair of small screens attached to a horses bridle to prevent it seeing sideways and behind; blinkers.

[Rihanna]

Blinders in Horse Racing. Attached to the bridle or hood, they are stiffened shields used to block a horses sideways vision so that they will concentrate on the race at hand.

[PussyCat]

Leather patch-like objects that keep a horse looking [straight ahead] and not making side [glances].
Incorrectly referred to as [blinkers].

[Mary Mallozziberg]

an excellent performance at some activity, especially in sport: