He needs a subscription.
…and no, I haven't seen it before and didn't cheat. If I'm wrong, ignore this post.
Chicken or egg? Neither…it was an extended iterative process, not a binary either/or.
How far can average person see? Unknown. Incomplete question. What size target, to what resolvability, through what medium, under what conditions. It's a basket of unknowable assumptions as is.
Using this logic, then clearly eggs predate chickens, but your answer also presumes some assumptions…such as eggs are laid (external), etc…
Eggs can internal, germ line cells, lots of things fit the definition and most are correctly long, long before chickens.
Again the answer on sight has to be delivered with qualifiers…powerful enough , etc… that's why I said it's not answerable as it was.