title: Comparison of iris-fixated foldable lens and scleral-fixated foldable lens implantation in eyes with insufficient capsular support.
abstract: OBJECTIVE
  To compare the outcomes of vision using two different intraocular lens (IOL) replacement techniques, iris-fixated foldable intraocular lens (IF-IOL) and scleral-fixated foldable intraocular lens (SF-IOL) in patients with insufficient capsular support.
  
  
  METHODS
  Total 63 eyes (62 patients) with insufficient posterior capsule support underwent replacement of IF-IOL or SF-IOL between January 2008 and August 2011. Outcome measures included changes in visual acuity, slit lamp examination, refractive indices and corneal curvatures.
  
  
  RESULTS
  The mean improvement of uncorrected visual acuity (UCVA) was greater in IF-IOL group compared to the SF-IOL group (0.43 D±0.19 Dvs0.35 D±0.18 D,P<0.05). Moreover, 12 (38.71%) eyes in IF-IOL group and 4 (12.50%) in SF-IOL group had a higher postoperative UCVA than preoperative best corrected visual acuity (BCVA) while 9 (29.03%) eyes in IF-IOL group and 18 (56.25%) in SF-IOL group had a lower postoperative UCVA than preoperative BCVA. The myopic mean manifest sphere and mean cylinder magnitude were lower in the IF-IOL group than that in the SF-IOL group (-0.47 D±0.58 Dvs0.50 D±0.43 D,P<0.01; 0.84 D±0.53 Dvs1.23 D±0.70 D,P<0.05). No difference of corneal astigmatism and surgically induced astigmatism was found between the two groups. In addition, fewer complications were observed in IF-IOL eyes.
  
  
  CONCLUSIONS
  IF-IOL implantation can give a significant improvement in vision with fewer complications than SF-IOL in patients with insufficient capsular support.
authors.affiliation: Department of Ophthalmology, the Second Hospital of Shandong University, Jinan 250033, Shandong Province, China.
authors.forename: Han
authors.initials: H
authors.lastname: Zhang
authors.affiliation: Department of Ophthalmology, General Hospital of Liaohe Oil Field, Panjin 124010, Liaoning Province, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Zhao
authors.affiliation: Refractive Center, Third Hospital Affiliated of Dalian Medical University, Dalian 116033, Liaoning Province, China.
authors.forename: Li-Jun
authors.initials: LJ
authors.lastname: Zhang
authors.affiliation: Department of Ophthalmology, the Second Hospital of Shandong University, Jinan 250033, Shandong Province, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Liu
authors.affiliation: Department of Ophthalmology, Zibo Kangming Ophthalmology Hospital, Zibo 255025, Shandong Province, China.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Department of Ophthalmology, the Second Hospital of Shandong University, Jinan 250033, Shandong Province, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Song
authors.affiliation: Department of Ophthalmology, the Second Hospital of Shandong University, Jinan 250033, Shandong Province, China.
authors.forename: Qing-Fen
authors.initials: QF
authors.lastname: Tian
authors.affiliation: Department of Ophthalmology, General Hospital of Liaohe Oil Field, Panjin 124010, Liaoning Province, China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Wang
authors.affiliation: UCLA Laser Refractive Center, Los Angeles, CA 90095, USA.
authors.forename: David-Rex
authors.initials: DR
authors.lastname: Hamilton
keywords: iris-fixated foldable intraocular lens; refraction; scleral-fixated foldable intraocular lens; visual acuity