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Lens particle glaucoma secondary to untreated congenital cataract and persistent fetal vasculature.
European Journal of Ophthalmology 2012 October 26
Purpose. To present a case of lens particle glaucoma in a child with an untreated unilateral congenital cataract and persistent fetal vasculature (PFV) and to discuss the implications for the management of unilateral congenital cataract.
Methods. A 4-year-old boy presented with a unilateral congenital cataract affecting the right eye. Examination revealed a cataract and PFV. Intraocular pressure (IOP) measured 18 mmHg right, 14 mmHg left, and he was managed conservatively. Nine months later, he attended clinic with a painful right eye. He had quiet anterior and posterior segments but free lens particles in the anterior vitreous and an IOP of 12 mmHg. Over 4 weeks, the IOP rose to 23 mmHg and the patient underwent vitreolensectomy.
Results. The affected eye has at no point become inflamed but macrophages laden with lens proteins were identified during histopathologic analysis of the vitreous. The proposed mechanism in this case is that the PFV weakened the posterior capsule leading to its rupture. The resultant macrophages then caused mechanical obstruction of aqueous outflow through the trabecular meshwork.
Conclusions. Lens particle glaucoma secondary to posterior capsular rupture is a rare form of lens-induced glaucoma. It is common practice to manage conservatively those patients who present late with unilateral congenital cataract. This case highlights the need for vigilant follow-up of these patients to enable lens-induced glaucoma to be detected at an early stage.
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