"....consistent with Donder" (or "as per Donder perhaps). I think this relates to strabismus or squint.

Donder was a young doctor in the military in Utrecht, earned 800 guilders a year and, hence, did translation work to earn extra money. Ruete (1845) had developed in Scharmbeck the first mechanical model of the eye and its muscles. He called it an 'ophthalmotrope'. Ruete also studied the rotation of his own eye about the visual axis. He was able to observe the rotation of his own eye about the visual axis by using an afterimage with the form of a + cross. A green afterimage was produced by looking at a red cross for a long time. He then looked at a screen in front of him to see whether the afterimage remained vertical when he looked right, left, up or down. Donders repeated these experiments and found that the afterimage cross tilted, when he looked in tertiary positions of gaze (i.e. right-up, right-down, left-up or left-down): He found that the amount of torsion depended upon the amount of elevation or depression and right or left gaze (Donders' Law).
...consistent with/in the style of (less likely) Donder. See explanation of Donder's law below:

In 1848 a German edition of Donders' work appeared which drew von Helmholtz' attention. He was very enthusiastic about Donders' discovery and proposed to call the definition of pseudotorsion 'Donders' law'. The reason for the tilt had not been recognized by Donders, however, it was von Helmholtz that explained the reason for pseudotorsion. (AB. I think it relates to strabismus. Donder was also responsible for "Donder's ring" describing the circle appearing in the visual field in glaucoma)
HTH
Andy