Pseudopapilledema

The characteristics of pseudopapilledema are

USUALLY BILATERAL MARGINS RELATIVELY SHARP CUP OBLITERATED DISC ELEVATED NO EDEMA NO HEMORRHAGES USUALLY SPONTANEOUS VENOUS PULSES VISION NORMAL

34.	SLIDE 34 shows pseudopapilledema caused by buried optic nerve head drusen. These are calcified colloid bodies in the substance of the nerve head which are not visible ophthalmoscopically until after the age of seven or eight. They are characteristically bilateral and can be identified on ultrasound or on CT scan. Note that the disc margins are sharp, there is no congestion of the nerve head and no obscuration of vessels as they proceed off the surface of the nerve head.
35-36.	SLIDE 35 and 36 show a similar appearance with sharp disc margins without obscuration of vessels, no congestion of the nerve head, and no dilation or tortuosity of the vessels.
37.	This is contrasted with SLIDE 37 which at first glance appears not dissimilar, but here the classic characteristics of papilledema are noted.
38.	Optic nerve head drusen become visible in early adolescence as noted in SLIDE 38 at the 11:00 and 12:00 position of the disc and appear as glistening white bodies...
39.	...even more apparent in SLIDE 39 at 12:00 and 2:00...
40.	... and throughout the substance of the disc in SLIDE 40. Optic nerve head drusen, aside from their frequent confusion with papilledema, are generally without visual significance although occasionally hemorrhages or areas of neovascularization may occur adjacent to the disc.