Being sharp-eyed means having keen vision and being able to perceive details that others may miss. Some synonyms for the phrase most sharpeyed include observant, vigilant, astute, perceptive, acute, discriminating, and keen. All of these words convey the ability to notice and appreciate minute details, to identify important patterns or discrepancies, and to maintain a heightened level of awareness. A sharp-eyed person may be a detective, a scientist, an artist, or simply someone who pays careful attention to the world around them. Whatever the context, being sharp-eyed is a valuable trait that can lead to greater success, understanding, and appreciation of the world.