In exploring the phrase "an eye for detail", I've realized that it essentially refers to the ability to spot small, yet significant details that others might overlook. In other words, it's about being meticulous or attentive to detail. So, some synonyms that capture the same essence could be "detail-oriented", "scrupulous", or "painstaking". I found that "precision", "exactness", and "accuracy" also convey the same meaning. Isn't it fascinating how language can express the same idea in so many different ways?