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Five Year- Results of Iris-Fixated Toric Phakic IOLs in Japanese Keratoconus Eyes

Five Year- Results of Iris-Fixated Toric Phakic IOLs in Japanese Keratoconus Eyes. Yutaro Nishi, Kyoko Sogo, Kayo Nishi, Miki Tachimichi, Okihiro Nishi Contact: y.nishi@nishi-ganka.or.jp Nishi Eye Hospital, Osaka, Japan.

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Five Year- Results of Iris-Fixated Toric Phakic IOLs in Japanese Keratoconus Eyes

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  1. Five Year-Results of Iris-Fixated Toric Phakic IOLs in Japanese Keratoconus Eyes Yutaro Nishi, Kyoko Sogo, Kayo Nishi, Miki Tachimichi, Okihiro Nishi Contact: y.nishi@nishi-ganka.or.jp Nishi Eye Hospital, Osaka, Japan None of the authors have financial interest

  2. Purpose • To assess the long term safety, efficacy and complications of the Artisan Toric phakic intraocular lens for the correction of Japanese keratoconus eyes.

  3. Previous reports Keratoconus Astigmatism • Budo C et al. J Refract Surg. 2005 May-Jun;21(3):218-22“SE was significantly reduced in all six keratoconus eyes. “ • Kamburoğlu G et al. Cataract Refract Surg. 2007 Mar;33(3):528-30“Corrected refractive error of a keratoconus patient.” • Venter J. J Refract Surg. 2009 Sep;25(9):759-64 “Good functional in keratoconus eyes during 1 year follow-up.” • Dick HB et al. Ophthalmology. 2003 Jan;110(1):150-62 • “European multicenter study; correction of astigmatism during 6month follow-up.” • Guell JL et al. Am J Ophthalmol. 2003 Sep;136(3):442-7 • “Correction of high astigmatism.” • Alio JL et al. J Refract Surg. 2005 Jul-Aug;21(4):324-31 • “Correction of astigmatism.”

  4. Material and methods • 18 myopic Japanese eyes with astigmatism ( 21 to 61 y.) • 10 eyes diagnosed as keratoconus ( 21 to 58 y.) • Implantation of Artisan Toric phakic IOLs • Implantation period ranged from 3 mo. to 5 y. • Examination: UCVA, BCVA, SE (diopters), IOP (mmHg), Endothelial cell count (cells/mm2), ACD (mm), slit-lamp finding

  5. Results: Keratoconus eyes IOL extraction in one case

  6. Case: IOL extraction • 58 years old, male: the oldest in the keratoconus group • Preoperative endothelial cell count = 2531cells/mm2: the lowest in the group Postoperative endothelial cell count = 756 cells/mm2 • Preoperative ACD= 3.1mm, Postoperative ACD= 3.3mm • the smallest values among the group • Distance between endothelium and IOL (center) was more than 1.5mm by Scheimpflug photography, which met the standard criteria

  7. Conclusion • Long-term results shows the implantation of the Artisan Toric IOL in Japanese eyes is a reasonable and moderately safe method for the correction of keratoconus. • It showed good functional results. • Longer-term follow ups are important. • The criteria regarding distance between corneal endothelium and phakic IOL (center) may better be reconsidered.

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