Lyness R W, Collin J R, Alexander R A, Garner A
Department of Pathology, Queen's University of Belfast, Royal Victoria Hospital.
Br J Ophthalmol. 1988 Feb;72(2):104-9. doi: 10.1136/bjo.72.2.104.
The levator palpebrae superioris muscles from 12 cases of Marcus Gunn phenomenon were examined histologically by means of histochemistry and morphometry. The appearances were of a neurogenic atrophy with pathological changes occurring in both the affected side and the clinically normal side, suggesting that the causative lesion was located in the central nervous system.