Skip to Content


Pronunciation: gun

Definition: Robert Marcus, British ophthalmologist, 1850–1909.

See: Gunn phenomenon, Gunn dots, under dot, Gunn sign, Gunn syndrome, Marcus Gunn pupil, Gunn crossing sign, Gunn pupil

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.