Glaucoma

Definition:

A disease of the eye characterized by high (or normal) intraocular pressure within the eyeball, damaged optic disk, atrophy of the optic nerve, hardening of the eyeball, and partial defect in the field of vision or complete loss of vision.

Classification:

4 basic types.

1. Primary glaucoma

1. Primary Open Angle Glaucoma
2. Normotensive glaucoma
3. Primary Angle Closure Glaucoma
4. Other variants (ex. Pigmentary glaucoma, pseudoexfoliation glaucoma)

2. Developmental glaucoma

1. Primary congenital glaucoma
2. Infantile glaucoma
3. Glaucoma associated with hereditary of familial diseases.

3. Secondary glaucoma

1. Inflammatory glaucoma
   
2. Phacogenic glaucoma
   
3. Glaucoma secondary to intraocular hemorrhage
   
4. Traumatic glaucoma
   
5. Neovascular glaucoma
   
6. Drug-induced glaucoma
   
7. Glaucoma of miscellaneous origin
   

4. Absolute glaucoma