In addition , the use of clear corneal incisions ( CCIs ) compared to scleral tunnels was associated with a 5.88-fold increase ( 95 % CI , 1.34-25 .9 ) in risk and the use of silicone intraocular lens ( IOL ) optic material compared to acrylic with a 3.13-fold increase ( 95 % CI , 1.47-6 .67 ) .
