Frank Bruni has eye problems that may be connected to the epidemic of a virus his newspaper has avoided covering for three decades.
"What happened to me is technically known as nonarteritic anterior ischemic optic neuropathy, or Naion, which could strike my left eye, too: There’s a roughly 20 percent chance of that."
https://www.nytimes.com/2019/07/06/opinion/sunday/blind-writers.html?action=click&module=Opinion&pgtype=Homepage
Bilateral optic neuropathy and unilateral tonic pupil associated with acute human herpesvirus 6 infection: a case report.
Abstract
BACKGROUND:
Human herpesvirus 6 (HHV-6), a widespread virus and causative agent of exanthema subitum in children, has been associated with a number of neurologic disorders including cranial nerve palsies, seizures, encephalitis, meningitis, and multiple sclerosis.
PATIENT:
A 31-year-old man presented with bilateral optic neuropathy, disc edema, and unilateral tonic pupil, which were found to be associated with acute HHV-6 infection. The patient had been suffering from juvenile diabetes for 5 years. One week after onset of intravenous antiviral therapy with foscarnet, disc edema subsided, and tonic pupil reaction was no longer detectable.
CONCLUSIONS:
HHV-6 infection may play a role as a causative agent in patients with optic neuropathy and tonic pupil.