Veronica is the woman with the issue of blood whom the Lord healed. "And, behold, a woman, which was diseased with an issue of blood twelve years, came behind Him, and touched the hem of His garment" (St. Matthew 9:20).
Out of gratitude to the Lord her Healer, Veronica ordered a statue of the Lord Jesus be made for her before which she prayed to God. According to tradition, this statue was preserved until the reign of Emperor Julian the Apostate who altered the statue into an idol of Zeus. This is one of the rarest instances that statues of saints were used in the Eastern Church. As is known, the latter became a common practice in the Western Church. Saint Veronica remained faithful to the Faith of Christ until death and died peacefully.
from the Prologue.