Eagle-eye is an idiomatic expression that refers to someone with exceptionally sharp vision and attention to detail. There are several synonyms that can be used in its place, such as keen observation, sharp-eyed, watchful, and vigilant. These words describe someone who is diligent and attentive to their surroundings and able to identify even the smallest details. Other appropriate synonyms for eagle-eye include perceptive, alert, eagle-sighted, and hawk-eyed. When you want to describe someone's exceptional vision or detail-oriented nature, these synonyms can be helpful in building a strong vocabulary and descriptive language. So, choose the best suitable synonym to convey your message effectively.