The Childhood Glaucoma Research Network ( CGRN ), composed of clinicians and scientists who specialize in treating children with glaucoma, played a pivotal role in developing a new international classification system for childhood glaucoma. The following definitions of childhood glaucoma and glaucoma suspect, and a new childhood classification system represent the end result of an international collaboration on childhood glaucoma for the World Glaucoma Association (WGA) meeting in July 2013 in Vancouver, British Columbia. 7 The definition of childhood glaucoma is IOP-related damage to the eye, rather than being based solely on optic-nerve criteria. Occasionally, this definition can be met only after multiple evaluations when progressive changes are established. The classification covers glaucoma occurring at any point in childhood, which has various international definitions. For each patient, the disease classification can evolve with ongoing systemic evaluation as secondary causes are uncovered, and a child with bilateral glaucoma can carry a different diagnosis for each eye. An algorithm for classifying a patient with childhood glaucoma using the new system is presented in Figure 1 .
Toxic glaucoma is open angle glaucoma with an unexplained significant rise of intraocular pressure following unknown pathogenesis. Intraocular pressure can sometimes reach 80 mmHg (11 kPa). It characteristically manifests as ciliary body inflammation and massive trabecular o edema 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.
Read about other experiences, ask a question about Steroid induced glaucoma., or answer someone else's question, on our message boards: