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One plus power up procedure of toric IOL selection

Poster Details

First Author: F.Hideki JAPAN

Co Author(s):    Y. Yukito   K. Shigeru           

Abstract Details


Cataract surgery with implantation of a monofocal toric IOL to correct for cataract and astigmatism simultaneously have recently been performed worldwide. However, this surgery is associated with the risk of IOL rotation error caused by a variety of reasons. Therefore, we produced a unique selection of toric IOL powers in consideration of postoperative rotation error.


This study involved 16 eyes of 9 patients who underwent phacoemulsification cataract surgery and implantation of a monofocal toric IOL (AcrySof IQ Toric IOL, Alcon, Texas) at the Division of Ophthalmology, National Center for Geriatrics and Gerontology Department of Advanced Medicine from June to October 2011. For patients with against-the-rule astigmatism, toric IOLs with a ‘one plus’ calculated power (e.g., from T3 to T4) were applied. For patients with with-the-rule astigmatism, toric IOLs with calculated power were applied.


Pre- and postoperative uncorrected distance visual acuity (UDVA) and subjective cylindrical errors were compared. The mean rotation errors of the IOLs were measured and evaluated using an optical path difference (OPD) wavefront aberrometer (OPD Scan II; Nidek Inc., Fremont, CA) to scan for internal astigmatism.


Pre- and postoperative logMAR UDVA were 0.4±0.34 and 0.02±0.06, respectively. Pre- and postoperative subjective cylindrical errors were -1.44±0.73D and -0.28±0.43D, respectively. The mean rotation error was 4±3.2 degrees at 3 months after surgery.


Our results show that our selection of the monofocal toric IOL is effective for treating patients with corneal astigmatism. FINANCIAL DISCLOSURE?: No

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