Responsorial Psalm (Psalm 1)
R. Those who follow you, Lord, will have the light of life.
Not so the wicked, not so; they are like chaff which the wind drives away.
For the LORD watches over the way of the just, but the way of the wicked vanishes.
R. Those who follow you, Lord, will have the light of life.
https://bible.usccb.org/bible/readings/121324.cfm
Saint Lucy (283-304), whose name means light, is one of the important saints of Advent. Before the calendar reform (1582), her feast day was the Winter Solstice and was celebrated as a festival of light with carols, candles, and candies. From the manner of her martyrdom, Saint Lucy is the patron saint of the blind and is invoked by those with vision problems.