Ants have rather poor vision compared to humans, but mostly a completely different vision:
Like most insects, ants have compound eyes made from numerous tiny lenses attached together. Ant eyes are good for acute movement detection, but do not offer a high resolution image. They also have three small ocelli (simple eyes) on the top of the head that detect light levels and polarization.[39] Compared to vertebrates, ants tend to have blurrier eyesight, particularly in smaller species,[40] and a few subterranean taxa are completely blind.[2] However, some ants, such as Australia’s bulldog ant, have excellent vision and are capable of discriminating the distance and size of objects moving nearly a meter away.[41]
Generally, larger eyes (in absolute terms, not relative to the individual’s body size) are likely advantageous for high-resolution vision. A larger eye can have more photoreceptors, and a larger pupil can take in more photons. Both factors increase the amount of information available for the brain to construct a detailed image.
Optical vision encounters physical limits when the detail size of observed objects becomes smaller than the wavelength of light being used (see “diffraction limit” or “Rayleigh criterion”).
Ants have rather poor vision compared to humans, but mostly a completely different vision:
https://en.wikipedia.org/wiki/Ant#Head
Generally, larger eyes (in absolute terms, not relative to the individual’s body size) are likely advantageous for high-resolution vision. A larger eye can have more photoreceptors, and a larger pupil can take in more photons. Both factors increase the amount of information available for the brain to construct a detailed image.
Optical vision encounters physical limits when the detail size of observed objects becomes smaller than the wavelength of light being used (see “diffraction limit” or “Rayleigh criterion”).