"Sharp eyne" is an archaic term used to describe someone with keen or perceptive eyesight. However, in modern language, there are several synonyms that can be used to describe this trait. Words like "observant," "attentive," "acute," and "keen" can be used to describe a person with sharp eyesight. Additionally, words like "discerning," "perceptive," and "insightful" can be used to describe a person who is able to see beyond the surface and notice details that others might overlook. Whatever word is used, it is clear that someone with sharp eyesight is not only able to see well, but also able to understand what they see with great clarity.