To block part of the vision of the horses
so as to enable them to concentrate in racing and not
to be sidetracked by other factors;
(2)
To enable the horses to run properly;
(3)
To enable the horses to develop specific
skills they need.
For
instance, some horses may be curious and wanting to look
around. Some may be nervous and will become scared or restless
even if only something subtle is happening. Some horses
may not run properly and keep shifting in and out, or tend
to lean against horses by their side. Others may need to
increase early speed when running short distance. Trainers
require horses to wear blinkers whenever they think it's
necessary. Besides, they may also require horses that have
never achieved good results and always lose in races to
wear blinkers so as to give them stimulation and arouse
their interest in racing.