<unk>  <unk>  is an eye disease, a neuropathy of the optic nerve, that shows all the characteristics of primary open angle glaucoma except one: the elevated intraocular pressure (IOP) - the classic hallmark of glaucoma - is missing.<unk>  is in many cases closely associated with general issues of blood circulation and of organ perfusion like arterial hypotension, metabolic syndrome, and Flammer syndrome.
Normal tension glaucoma
Primary juvenile glaucoma
Ghost cell glaucoma
Phacolytic glaucoma
Graves' ophthalmopathy
Cat eye syndrome
Fuchs heterochromic iridocyclitis
Toxic amblyopia