Eye to Eye
A butterfly’s eyes are relatively enormous, spherical structures referred to as compound eyes. Consisting of thousands of hexagonal shaped omatidea, each omatidea, or mini-sensor, is directed at a slightly different angle from the others. Collectively they are directed forwards, backwards, left, right, up, and down. For this reason, butterflies are able to see in nearly every direction simultaneously.
Vision is well developed in butterflies and most species are sensitive to the ultraviolet spectrum. The ability to see colors may be widespread but has been demonstrated in only a few species.