>>90638182christians used blinding, too. at the time, it was actually considered progressive, less lenient, compared to death punishment, so they aimed to replace death with blinding.
https://en.wikipedia.org/wiki/Blinding_(punishment)#In_history In the Middle Ages, blinding was used as a penalty for treason or as a means of rendering a political opponent unable to rule and lead an army in war.[7] The blinding of Byzantine general Belisarius (c.500 – 565) at the order of the Emperor Justinian is probably apocryphal. Vazul (before 997 – 1031/1032) of the Hungarian royal House of Árpád was blinded at the order either of his cousin King Stephen I or of his queen, Gisela.
After the disinheritance and subsequent rebellion of Bernard of Italy, Louis the Pious attempted to have him blinded, but the procedure was botched, killing him instead.[8]
After the Battle of Kleidion of 1014, the Byzantine Emperor Basil II had captured several thousand soldiers from the Bulgarian Empire. He put them into groups of 100 and blinded 99 in every group. The last soldiers had only one eye gouged out, and these one-eyed men were ordered to lead their blind friends back to their commander. This earned Emperor Basil II the nickname of 'the Bulgar Slayer'.[1] According to some accounts of the story, Tsar Samuel of Bulgaria died from a heart attack upon seeing the returning blind soldiers.
In the 11th century, William the Conqueror used blinding as a punishment for rebellion to replace the death penalty in his laws for England. He was also accused of making the killing of a hart or hind in a royal forest into a crime punishable by blinding, but the Anglo-Saxon Chronicle claims that this was made up to tarnish king William's reputation.
Henry I of England blinded William, Count of Mortain, who had fought against him at Tinchebray in 1106. He also ordered blinding and castration as a punishment for thieves.[7] Prince Álmos and his four-year-old son Béla II of Hungary were blinded in 1113 by Álmos' brother Coloman.
Mahmud Shah Durrani, the Afghan Emperor of the Durrani Empire, blinded his brother and former ruler, Zaman Shah Durrani to disqualify him from succession or disputing his power ever again.[9]