A patient complaining - malak

[ArchivalUser]

A patient complaining of unilateral decreased vision is noted to have equal pupils in dim light. When you shine a bright penlight into the unaffected eye both pupils constrict briskly, but when you swing the light into the affected eye both pupils dilate.

This is a sensitive diagnostic indicator of which one of the following?

Cataract formation
Malingering
Early glaucoma
Anisometropia
Optic nerve lesion

[ArchivalUser]

optic nerve lesion

[ArchivalUser]

optic nerve lesion-marcus gunn pupil-afferent pupillary defect