Intracranial pressure may be just as critical of a factor in the progression of glaucoma as IOP, according to a speaker here ...

Right fundus photograph showing a hyperemic swollen optic disc that obscures the major blood vessels. Note the splinter hemorrhages at the level of the nerve fiber layer, more than 1 disc area ...

[2] Without looking for other less obvious "clues" in the retina and choroid, the striking appearance of a bilateral swelling of the optic nerve heads ... spots at the level of the retinal pigment ...