Sayyiduna Ali (may Allah be pleased with him) said: If the eye of a one-eyed man is put out, then if he wishes he may take the full blood money, and if he wishes he may take half the blood money and put out one eye (of the offender) in return for the other.
The report of Ata bin Abi Rabah from Ali (may Allah be pleased with him) is mursal (with a broken chain).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الديات / 16294