If you've ever watched a horse race, you've probably noticed that some racehorses wear distinctive eye cups attached to their headgear. These are known as blinkers, and they're one of the most common types of horse racing headgear used by trainers. But why do racehorses wear blinkers, and do they actually improve performance? Here's everything you need to know about blinkers, why trainers use them, and how they differ from other types of racing equipment. What Are Blinkers? B