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Toric IOL maintains uncorrected distance visual acuity, reduces corneal astigmatism
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A toric iteration of an established IOL design reduced corneal astigmatism and improved uncorrected distance vision, according to a study.
The prospective, multicenter clinical trial included 102 patients who underwent bilateral implantation of a Tecnis ZCT150 toric IOL (Abbott Medical Optics) and 95 patients who received a Tecnis ZCB00 non-toric IOL.
An open-label arm comprised 17 patients implanted with a Tecnis ZCT225 toric IOL, 25 patients implanted with a ZCT300 toric IOL and 30 patients implanted with a ZCT400 toric IOL.
Outcomes were assessed at 1 day, 1 week, and 1, 3 and 6 months after surgery.
Cylinder was reduced by a mean 74.53% in eyes implanted with the ZCT150 toric IOL and 31.61% in eyes implanted with the ZCB00 non-toric IOL; the difference was statistically significant (
Cylinder was reduced by a mean 76.27% in the open-label arm.
Uncorrected distance visual acuity of 20/20 or better was attained in 43.6% of eyes implanted with the ZCT150 toric IOL and 23.7% of eyes implanted with the ZCB00 non-toric IOL; the difference was statistically significant (
Uncorrected distance visual acuity of 20/20 or better was attained in 38% of eyes in the open-label arm.
All eyes had best corrected distance visual acuity of 20/40 or better at 6 months.
Lens rotation was 5° or less in 92.9% of toric IOL eyes from 1 to 3 months and in 94.1% from 3 to 6 months. Both rotation findings surpassed the American National Standards Institute standard of at least 90% of eyes with less than 5° of rotation between visits.
Disclosure: See the study for a full list of all authors’ relevant financial disclosures.
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