Eye safety (and general biological safety) is of paramount importance when designing any laser-based system. But, as with many other aspects of design, ensuring eye safety isn’t a simple or linear process. To the contrary, there are a number of factors to be considered, many of them appearing to be contradictory. And that’s why it’s best to consider this response before designing a LiDAR sensor, and then work back from there, determining the parameters which may have the greatest effect.