Table 1 Differential diagnosis of childhood narrow angles
Anterior segment dysgenesis | Posterior ‘Pushing’ mechanism |
|---|---|
 Corneal anomalies: microcornea, cornea plana/sclerocornea | Anterior rotation of ciliary body |
 Axenfeld-Rieger syndrome, Peters anomaly, Aniridia |  Nanophthalmos, Inflammation (scleritis, uveitis, juvenile idiopathic arthritis) |
 Ectopia lentis (trauma, homocystinuria, Marfan syndrome, Ehlers’-Danlos, syndrome, Weill-Marchesani syndrome |  Drug-induced |
Pupillary block | Pressure from posterior segment |
 Aphakia |  Tumor (retinoblastoma, medulloepithelioma) |
 Microspherophakia |  Exudative retinal detachment |
Anterior “Pulling’ mechanism without pupillary block | Contraction of retrolental tissue |
 Neovascular (tuberous sclerosis) |  Persistent fetal vasculature |
 Peripheral anterior synechiae |  Retinopathy of prematurity |