Note y — BOOK IV.
Reading edition
It is easy to be observed, that the Pupil openeth in dark Places; as also when we look at far distant Objects, but contracts by an Increase of Light, and when the Objects are nigh. This Motion of the Pupil some say, is effected by the circular and strait Fibres of the Uvea, and some attribute it to the Ligamentum Ciliare. Yet I have no great doubt but that they both concur in that Action, and that the Ligamentum Ciliare doth, at the same time the Pupil opens or shuts, dilate or compress the Crystalline, and bring it nigher unto, or carry it farther off the Retina. For the Structure of the Ligamentum Ciliare, and its two Sorts of Fibres, drawn with the Help of a Microscope, I shall refer to Mr. Cowper’s Anat. T. 11.