Most of the images show open (blinker-less) bridles, but there is some evidence for blinker/winker use. 

The Egyptians had projections near the browband that may have served as blinkers (red circle above). The projections are subtle in extant works and more prominent in 19th century redrawings. 

A painted box from Tutankhamun's tomb depicts the Pharaoh on a chariot chasing NubiansKENNETH GARRETT NATIONAL GEOGRAPHIC GETTY IMAGES
Royal 16 G VIII Caesar, translated by Jean Duchesne (or Du Quesne), Bellum Gallicum (Les commentaires de Cesar) France, N. (Lille) and Netherlands, S. (Bruges?); 1473-1476 

The 15th century yields clearer examples. Redrawing can create flawed evidence. However, Castello de la Manta confirmed that the frescos are unaltered.

La Manta Castle Fonte della giovinezza (Maestro della Manta - 1420-1430)Museum states "these frescoes were dated around 1420/1430. They have been restored and left with the original colors and designs.

In the mid sixteenth century, we have written evidence of winkers use to focus ridden horses.

Tratado de la cavalleria de la gineta Hernan Chacon 1551 (Fallows translation)


 ...on his horse, on which he put some velvet winkers so the horse could not see anything in front except where to place himself at the spot where the bull had to enter and his horse would wait very still without seeing the bull