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A cataract eye cross section showing a cloudy, thickened lens behind the cornea and iris. The cut face reveals the full eyeball wall in layers, with branching retinal blood vessels spreading across the back and the optic nerve leaving at the bottom. A central canal runs through the vitreous chamber, and the ciliary body frames the lens. It is a clear teaching aid for an anatomy, biology or optometry classroom, or a display piece in an eye care office.

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