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Postsurgical results of regular and one-step higher toric intraocular lens model selection using preoperative AS-OCT data in eyes with ATR astigmatism

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Session Details

Session Title: Presented Poster Session: IOL Power Calculation/Paediatric

Venue: Poster Village: Pod 1

First Author: : S.Nakano JAPAN

Co Author(s): :    T. Hiraoka   T. Oshika           

Abstract Details


To compare postsurgical results of toric intraocular lens (T-IOL) implantation in different approaches of the cylindrical power selection in eyes with against-the-rule (ATR) astigmatism.


Ryugasaki Saiseikai Hp, Ibaraki, Japan


On the basis of informed consent and agreement, sixty eyes of 42 subjects with ATR corneal astigmatism scheduled to undergo cataract surgery with T-IOL implantation were divided into two groups. In one group (conventional group), T-IOL model was selected according to manufacture’s T-IOL calculator, and the one-step higher model was chosen in the other (higher power group). Visual acuity (distance and near), residual astigmatism, and contrast sensitivity were measured preoperatively and at 1 day, 1 week, 1month, and 3 month postoperatively. IOL misalignments were evaluated at 3 month postoperatively. All obtained results were compared between the two groups.


Uncorrected distance visual acuity (UDVA) at 3 month postoperatively was -0.01± 0.10 (mean ± SD) logMAR in the conventional group and 0.02 ± 0.16 logMAR in the higher power group. Uncorrected near visual acuity (UNVA) was 0.70 ± 0.14 and 0.70 ± 0.17, respectively. Subjective astigmatism was 0.28 ± 0.44 and 0.23 ± 0.36 D, respectively. Contrast sensitivity (AULCSF) was 1.84 ± 0.22 and 1.91 ± 0.24, respectively. IOL misalignments were 3.7 ± 3.9 and 2.4 ± 2.0 degrees, respectively. There were no significant differences in UDVA, CDVA, subjective astigmatism, contrast sensitivity, and IOL misalignments between two groups.


In eyes with ATR astigmatism, postsurgical results of one-step higher T-IOL model were equivalent to those of regular T-IOL model based on the results of manufacture’s calculator, when cylindrical power and axis were evaluated with AS-OCT preoperatively.

Financial Disclosure:

receives consulting fees, retainer, or contract payments from a company producing, developing or supplying the product or procedure presented, research is funded, fully or partially, by a company producing, developing or supplying the product or procedure presented, receives non-monetary benefits from a company producing, developing or supplying the product or procedure presented.

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