A groundbreaking study published in the *New York Times* reveals a single genetic mutation was pivotal in the evolution of the vertebrate eye. Researchers analyzed ancient gene sequences, pinpointing a specific change in a regulatory gene that dramatically enhanced light sensitivity in early fish.

This mutation, occurring over 500 million years ago, allowed for the development of complex camera-like eyes, fundamentally altering vision capabilities across the vertebrate lineage. The discovery, highlighted in a Hacker News discussion, challenges previous theories that emphasized gradual structural changes, instead highlighting the power of a single genetic tweak. Single gene mutation emerges as the critical factor enabling the vertebrate eye's sophisticated design.