Table 3: Revised classification of glaucoma subtypes.

Primary/secondary classificationAngle status: open/angle closureEtiologySite of most resistance

PrimaryOpenOcular hypertensiveTM
PrimaryOpenOcular normotensiveTM
SecondaryOpenInflammatoryTM/PostTM
SecondaryOpenNeovascularTM/PostTM
SecondaryOpenTM obstructive (PXF, PDG, hemolytic, melanomalytic, phacolytic)TM
SecondaryOpenSteroid-inducedTM
SecondaryOpenRaised PostTM outflow resistancePostTM
PrimaryAngle closurePhacomorphic, plateau, pupillary blockPreTM
SecondaryAngle closureAnterior pulling (ICE, PPMD, NVG, fibrous ingrowth, inflammatory)PreTM
SecondaryAngle closurePosterior 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.