WHAT DOES PION786 MEAN?

The existence of acute eyesight reduction, optic nerve-linked visual field defects in the eye with eyesight reduction, a RAPD, and an at first typical optic disc and fundus on ophthalmoscopy Along with the later on improvement of optic disc pallor at six-eight months, and no other abnormalities to elucidate the eyesight decline are suggestive of PI