This book was a children’s illustrated book I never was able to finish as a child because I was pulled away from the store as I was finishing. It seemed to have realistic (rather than cartoony) full page painted illustrations and was a wide, landscape book. The story was about two brothers who grew up and got married. One brother was successful and rich and the other was poor. The poor brother would go to his brother to beg for things they needed, and the rich brother would ask him for increasingly difficult payments in return for meager returns. At one point, the brother asks for food for him and his starving wife and the rich brother demands one of his eyes as payment and gives him a moldy piece of bread in return. I think in another exchange, he begs for fire or light, and receives a pithy little candle stub. I wasn’t able to finish the story, but from what I recall, I think the poor brother eventually gives up both of his eyes, but at some point, an angel appears before both brothers and its glory is so bright that the rich brother is blinded, but the poor brother is spared because he cannot see (perhaps he regains his sight?). If I remember correctly, the scene in which the rich brother is blinded showed him covering his eyes from the bright light. It gave me a feeling of being a holiday or Christmas book, much like The Little Match Girl, but that could have been because of the angel, or a time when the poor brother and his wife were freezing in cold weather.
I don’t know the title, but I only recall as a child thinking that the business with taking eyes was a bit mature/dark for a children’s picture book.