Association of giant retinal tear with iridofundal coloboma in a case of paediatric retinal detachment

Description 

A 6-year-old boy presented with history of sudden-onset painless diminution of vision oculus dexter (OD) since the last six hours. The vision loss was preceded by a sudden shower of floaters. There was no history of recent or remote trauma, and no positive family history of ocular illness could be elicited from the parents. Visual acuity was perception of light with accurate projection of rays OD and 20/20 oculus sinister (OS). A typical and complete iris coloboma with keyhole pupil was noted OD. There was no sign of trauma in either eye. Intraocular pressures measured to 6 mm Hg OD and 13 mm Hg OS. Dilated fundus examination showed type II choroidal coloboma involving the macula (Ida Mann classification) with total rhegmatogenous retinal detachment OD. Peripheral examination revealed a giant retinal tear (GRT), extending almost five clock hours, with a posterior flap falling over the posterior pole (figure 1). OS was...

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