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Table 1 Differential diagnosis of childhood narrow angles

From: Acute myopia and angle closure glaucoma from topiramate in a seven-year-old: a case report and review of the literature

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