The black zero of an eyeball embodies nothing, but through its small circumference admit the sun's infinities. A pupil belongs to a family of irrationals like hole, negative, and absence, words which generate epistemological problems because they seem to have no real substance in nature. However, nature is totally inclusive, and so these odd words come to inherit the same properties of weight and temporality which are indicated by more rational words like log or splinter. The tautological argument would say that because a nothing occurs as a word in language, then so also must it occur in nature. But although it is tool simple to section out the iris, cornea and other constituents of the eye, it will require retooling a scalpel for infinite sharpness before it can remove the fuzzy supples of a pupil.
