This human eye video close-up, via io9’s Incredible Photographs of Fractals Found in the Natural World, was filmed by AJ Korkidakis. Though it’s short, it provides a clear up-close view of an eye.
The one below, which isn’t as crisp but goes into more detail about the eye’s different parts, is from a series by Paul Price on Extreme Detail:
YouTuber Lifeoftheunknown has another closeup:
There are more eye videos on this site, including: How do eyes work and how do glasses help us see?
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