What is a descriptor that means "quick at visually locating or identifying"?

If someone could quickly find a word in a large block of text, or were really quick at Where's Waldo? books, what is a concise descriptor you could use to express that quality?

I used to think this was visual acuity, but that doesn't seem to be the case:

NOUN

Sharpness of vision, measured by the ability to discern letters or numbers at a given distance according to a fixed standard.

A person who is sharp-eyed

is very good at noticing things

-Cambridge Dictionary online

Synonyms include:

observant, perceptive, eagle-eyed, hawk-eyed,

A word which goes even further is

percipient

good at noticing and understanding things