Final answer:
The lens of the eye functions to focus an image on the retina, with the cornea and lens working in tandem to form a clear visual image. The lens's flexibility in adjusting its power allows for sharp vision at various distances. The correct option is B.
Step-by-step explanation:
The function of the lens in the human eye is to focus an image on the retina. The cornea and lens work together to form a real image on the light-sensitive retina.
Resembling a camera, the human eye adjusts the power of the lens to produce a clear image on the retina for objects at differing distances.
The most acute visual detail is perceived by the fovea, due to it having the highest density of light receptors. The eye's ability to adjust the lens helps us see clearly both near and far.
Artificial lenses like contact lenses or glasses help in focusing light before it reaches the eye's lens, further refining the image projected onto the retina for better vision. The correct option is B.