blinders

Blinders, also known as blinkers, are pieces of horse tack attached to a bridle that limit a horse's field of vision. They are placed on the sides of the horse's head to restrict peripheral vision, helping the horse focus on what is ahead. Horses have both monocular and binocular vision, allowing them to see a wide range of stimuli, but this can also lead to disorientation.1

Blinders are used to prevent horses from being startled by sudden movements or sights from the sides, which is particularly important for safety in busy environments or crowded events. They can also improve performance in competitive settings, such as horse racing, by helping the horse concentrate and avoid distractions. The term "blinders" can also be used figuratively to describe someone who is refusing to see or acknowledge certain realities.12