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Results of Hydrophobic Acrylic IOL Insertion through Corneal Microincisions Smaller than 2.0 mm. Tomoichiro Ogawa, Takuya Shiba Hiroshi Tsuneoka Jikei University School of Medicine, Tokyo, Japan. Authors have no financial interests. iMics1. 6mm. Y-60H. AF-1 iMics1 ( HOYA ).
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Results of Hydrophobic Acrylic IOL Insertion through Corneal Microincisions Smaller than 2.0 mm Tomoichiro Ogawa, Takuya Shiba Hiroshi Tsuneoka Jikei University School of Medicine, Tokyo, Japan Authors have no financial interests
iMics1 6mm Y-60H AF-1 iMics1(HOYA) • Hydrophobic acrylic intraocular lens (IOL) • Implanted through corneal microincisions
AF-1 iMics1(HOYA) • Injector : ISH004(HOYA) • Cartridge : Type-N18 (HOYA) • Preferred incision size: Cornea, 2.0 mm; Sclera cornea, 1.8 mm Purpose • To evaluate the safety and efficacy of cataract surgery with implantation of the AF-1 iMics1 IOL through a corneal microincision
Subjects and Method • May - August 2009 • Jikei University Hospital • Procedures: 69 eyes • 1.7-mm (inner scale) corneal incision: 47 eyes • 2.0-mm (inner scale) corneal incision: 22 eyes • Operative method • 1.4-mm temporal corneal incision • Bimanual phacoemulsification • Incisions enlarged to 1.7 or 2.0 mm • Implant AF-1 iMics1
Variables examined • Incision size(before and after IOL implantation) • Tsuneoka microincision gauge (ASICO) • Increased width of corneal incision after IOL implantation • Surgery-induced corneal astigmatism(Cravy method) • 1 month postoperatively • Operative complications • Postoperative complications
* 1.7 mm 2.0 mm ** Results Wound width * P=0.0025 Increased wound width Mann-Whitney U-test **2008. Ogawa. ESCRS.
(D) *NS ** ** ** Results *Mann-Whitney U-test Surgery- induced corneal astigmatism 2.0mm 1.7mm **2008. Ogawa. ESCRS.
Results Operative complications Post- operative complications
Posterior capsule rupture Tip of cartridge is too deep in anterior chamber and too close to posterior capsule Insertion of cartridge Tip of cartridge Discussions
AF-1 iMics1 SN60WF • Tacking tips of both forward and back haptics • Full length of IOL is greater than that of other foldable 1-piece IOLs • AF-1 iMics1 is stiffer Full length is greater
IOL is released near posterior capsule IOL implantation Posterior capsule rupture • IOL goes through posterior capsule • Posterior capsule ruptures
Conclusion • AF-1 iMics1(HOYA) • Implanted through corneal incision < 2.0 mm • Little surgery-induced astigmatism • Wound self-healing • Carefully position tip of cartridge