What do lens do on a squid?

In squids, the lens is part of the complex eye structure that helps focus light onto the retina, allowing the animal to see clearly underwater. Unlike vertebrate eyes, squid lenses are more spherical, providing a wide field of vision. This adaptation is crucial for their predatory lifestyle, enabling them to detect movement and identify prey in their aquatic environment. Overall, the lens plays a vital role in enhancing their visual capabilities.