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Session Title: Intraoperative Biometry and Correction of Astigmatism
Session Date/Time: Monday 07/10/2013 | 08:00-10:00
Paper Time: 09:22
Venue: Main Lecture Hall (Ground Floor)
First Author: : H.Bissen-Miyajima JAPAN
Co Author(s): : S. Oki Y. Inoue H. Takehara T. Nishimura K. Nishikawa
To evaluate postoperative outcomes of toric intraocular lenses (IOLs) and compare the cylinder correction in eyes with against-the rule (ATR) and with-the rule (WTR) astigmatisms.
Multicenter retrospective study
This study included 97 eyes which received AcrySof Toric IOL (SN6AT3-5: Alcon) and were followed up for more than 1 year at 3 sites. The eyes were divided into 2 groups according to the keratometric cylinder; ATR (76 eyes) and WTR (21 eyes). Postoperative spherical equivalent refraction and refractive cylinder, visual acuity (UDVA, CDVA), contrast sensitivity, and IOL misalignment from the intended axis were evaluated.
Spherical equivalent (ATR/WTR) was -0.21±0.47 D/-0.33±0.61 D and there were no statistical differences between the 2 groups. J0 and J45 refractive cylinder vectors showed reduction in both groups, however, ATR group showed under correction (-0.72±0.43 D/-0.46±0.41 D) (P=0.015). Both UCDV (0.04/0.06 logMAR) and CDVA (-0.10/-0.10 logMAR), and contrast sensitivity did not show any statistical differences. IOL misalignment was 4.33/6.71 degrees.
Toric IOL provided good visual function in eyes with ATR and WTR astigmatisms by reducing the preexisting corneal astigmatisms for more than 1 year after its implantation. However, both groups showed under correction, which was more significant in the ATR group.
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