Picking on a vertex level

Suppose I have one big mesh that have around half a million vertices (of points), is there any feasible way to pick on the vertex level rather than on the mesh level ?

I would like to hover over any specific point and be able to access information related to the same vertex.

Thank you.

Are you looking for something like this? https://threejs.org/examples/webgl_interactive_points

It seems to me that you want to perform raycasting against a bunch of points.

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