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Developmental glaucoma (Q15.0)
  • Developmental glaucoma
    • Primary congenital glaucoma
    • Infantile glaucoma
    • Glaucoma associated with hereditary of familial diseases
Secondary glaucoma (H40.3-H40.6)
  1. Inflammatory glaucoma
    • Uveitis of all types
    • Fuchs heterochromic iridocyclitis
  2. Phacogenic glaucoma
    • Angle-closure glaucoma with mature cataract
    • Phacoanaphylactic glaucoma secondary to rupture of lens capsule
    • Phacolytic glaucoma due to phacotoxic meshwork blockage
    • Subluxation of lens
  3. Glaucoma secondary to intraocular hemorrhage
    • Hyphema
    • Hemolytic glaucoma, also known as erythroclastic glaucoma
  4. Traumatic glaucoma
    • Angle recession glaucoma: Traumatic recession on anterior chamber angle
    • Postsurgical glaucoma
      • Aphakic pupillary block
      • Ciliary block glaucoma
  5. Neovascular glaucoma (see below for more details)
  6. Drug-induced glaucoma
    • Corticosteroid induced glaucoma
    • Alpha-chymotrypsin glaucoma. Postoperative ocular hypertension from use of alpha chymotrypsin.
  7. Glaucoma of miscellaneous origin
    • Associated with intraocular tumors
    • Associated with retinal detachments
    • Secondary to severe chemical burns of the eye
    • Associated with essential iris atrophy
    • Toxic Glaucoma
Neovascular glaucoma is an uncommon type of glaucoma that is difficult or nearly impossible to treat. This condition is often caused by proliferative diabetic retinopathy (PDR) or central retinal vein occlusion (CRVO). It may also be triggered by other conditions that result in ischemia of the retina or ciliary body. Individuals with poor blood flow to the eye are highly at risk for this condition. Neovascular glaucoma results when new, abnormal vessels begin developing in the angle of the eye that begin blocking the drainage.

Patients with such condition begin to rapidly lose their eyesight. Sometimes, the disease appears very rapidly, specially after cataract surgery procedure. A new treatment for this disease, as first reported by Kahook and colleagues, involves use of a novel group of medications known as Anti-VEGF agents. These injectable medications can lead to a dramatic decrease in new vessel formation and, if injected early enough in the disease process, may lead to normalization of intraocular pressure.

Toxic glaucoma is open angle glaucoma with an unexplained significant rise of intraocular pressure following unknown pathogenesis. Intraocular pressure can sometimes reach 80 mmHg. It characteristically manifests as ciliary body inflammation and massive trabecular oedema that sometimes extends to Schlemm's Canal.

This condition is differentiated from malignant glaucoma by the presence of a deep and clear anterior chamber and a lack of aqueous misdirection. Also, the corneal appearance is not as hazy. A reduction in visual acuity can occur followed neuroretinal breakdown. Associated factors include inflammation, drugs, trauma and intraocular surgery, including cataract surgery and vitrectomy procedures.

Gede Pardianto (2005) reports on four patients who had toxic glaucoma. One of them underwent phaecoemulsification with small particle nucleus drops. Some cases can be resolved with some medication, vitrectomy procedures or trabeculectomy. Valving procedures can give some relief but further research is required.
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