Final answer:
The human eye's capability to process information varies significantly and is not constant, depending on multiple factors.
Step-by-step explanation:
The human eye can process varying amounts of information per second, which does not correspond to a fixed rate like 24, 60 or 100 items per second. The capacity of the eye to process visual information depends on a variety of factors, including the type of information, levels of light, and individual differences in perception and cognition. Therefore, the most accurate answer to how many items per second the human eye can process is that it varies widely and is not constant.