Mmmmmm. Actually Nelson injured his eye, not lost it, when leading a landing party in Corsica as a junior officer. A musket ball grazed a rock spraying particles into his eye. He was temporarily blinded in that eye. He later applied for a pension as compensation for his injury which was refused. He had reduced vision but was not blinded. He later made much of his injuries to court publicity and enhance his public esteem. His likeness on the top of Nelson's Column in Trafalgar Square, London, does not include an eye patch.
Stunning engraving. Takes my breath away. I guess similar to he skills of printing plate engraving?