Table 3.

Revised classification of glaucoma subtypes.

Primary/secondary classification	Angle status: open/angle closure	Etiology	Site of most resistance
Primary	Open	Ocular hypertensive	TM
Primary	Open	Ocular normotensive	TM
Secondary	Open	Inflammatory	TM/PostTM
Secondary	Open	Neovascular	TM/PostTM
Secondary	Open	TM obstructive (PXF, PDG, hemolytic, melanomalytic, phacolytic)	TM
Secondary	Open	Steroid-induced	TM
Secondary	Open	Raised PostTM outflow resistance	PostTM
Primary	Angle closure	Phacomorphic, plateau, pupillary block	PreTM
Secondary	Angle closure	Anterior pulling (ICE, PPMD, NVG, fibrous ingrowth, inflammatory)	PreTM
Secondary	Angle closure	Posterior pushing (tumor, choroidal effusion, ciliary body block)	PreTM

TM, trabecular meshwork; IES, iridocorneal endothelial syndrome; NVG, neovascular glaucoma; PPMD, posterior polymorphous dystrophy; PXF, pseudoexfoliation; PDG, pigment dispersion glaucoma.