Final answer:
The depth cue related to the curvature of the lens in the eye is accommodation. The ciliary muscles adjust the shape of the eye lens to focus on near or far objects, allowing us to perceive depth accurately.
Step-by-step explanation:
The depth cue related to the curvature of the lens in the eye is accommodation. Accommodation is the process in which the ciliary muscles adjust the shape of the eye lens to focus on near or far objects. When an object is close, the lens becomes thicker to converge light rays and produce a clear image on the retina. This allows us to perceive depth accurately.