The distance between the centres of the pupils of the eyes is 1/3 of
the face. The space between the outer corners of the eyes, that is
where the eye ends in the eye socket which contains it, thus the
outer corners, is half the face.

The greatest width of the face at the line of the eyes is equal to
the distance from the roots of the hair in front to the parting of
the lips.

[Footnote: There are, with this section, two sketches of eyes, not
reproduced here.]