PMC5301095_01
Colour anterior segment photograph of the left eye. a There is a multi-cystic, avascular thin-walled bleb anterior to the non-functioning superior temporal M3 Molteno implant. b Arrow indicating stoma at the base of the inadvertent bleb.
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F1
Slit-lamp examination of the anterior segment of the left eye revealed a multi-cystic bleb located in the region anterior to the implant plate (Fig. 1a). The bleb wall was thin and transparent with a visible stoma in the base at the posterior edge of the bleb (Fig. 1b).
Anterior segment DRI Triton swept source optical coherence tomography of the left eye. a The fistulous tract extends from the corneal tunnel to the subconjunctival space anterior to the implant (yellow arrows). The anterior ridge of the Molteno implant M3 plate is seen just behind a multi-cystic thin-walled bleb (blue arrow). Inset showing the orientation of the radial scan coinciding with the original tube pathway. b Fish-mouthing of the internal wound measuring 57 mum in separation (yellow arrow).
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F2
The subconjunctival region appeared diaphanous, and the multi-cystic nature of the bleb was noted (Fig. 2).
Theoretical normal radial tension forces in the cornea as a function of corneal thickness and intraocular pressure (IOP).
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F3