Swollen optic disc
Acquired disc swelling is sometimes difficult to distinguish from pseudo-edema of the disc. An accompanying history of visual loss and presence of other ocular or systemic findings assist this distinction. In the absence of visual or other complaints, disc swelling may simply be a pseudo-edema or a congenital anomaly and initial evaluation may be directed to excluding this diagnosis. On the other hand, sudden visual loss and disc edema represents an acute optic neuropathy that is not likely to be congenital anomaly. It is also important to distinguish unilateral vs bilateral disc swelling as the diagnostic considerations differ
Aki Kawasaki is Associate Professor at University of Lausanne and clinical neuro-ophthalmologist at Hôpital Ophtalmique Jules Gonin in Lausanne, Switzerland. She directs the laboratory of pupillography and has an interest in disorders and dysfunction of retinal ganglion cells, particularly those expressing melanopsin.