The IOL we currently use is the Morcher type 67B (Morcher GmBH). There is a 10.0 mm opaque black PMMA diaphragm with a 3.0 mm central transparent optical area in the IOL. Before January 2008, we used the 67G IOL,1'2 which has a 5.0 mm transparent optical area; however, most patients had obvious photophobia under strong sunlight after IOL implantation. Moreover, because the PMMA is not foldable, a 10.0 mm to 11.0 mm scleral tunnel is required for implantation of the IOL, so the incision is liable to bleed or induce astigmatism. In previous clinical observations,2 we found that the long-term complications after black diaphragm IOL implantation in traumatic aniridia were related to the preoperative degrees of damage to the anterior chamber angle and iris defects, as well as to the position of the implanted IOL.
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