Comparison of clinical outcomes of toric intraocular lens, Precizon vs Tecnis: a single center randomized controlled trial

Na Yeon Jung, Dong Hui Lim, Sung Soon Hwang, Joo Hyun, Tae-Young Chung, Na Yeon Jung, Dong Hui Lim, Sung Soon Hwang, Joo Hyun, Tae-Young Chung

Abstract

Background: To compare the clinical outcome of Precizon toric intraocular lens (IOL) (Ophtec Inc.) to that of Tecnis toric IOL (Abbott Medical Optics Inc.).

Methods: This randomized comparative study included 40 eyes (Precizon, 20 eyes; Tecnis, 20 eyes) of 40 patients with visually significant cataract and corneal astigmatism who underwent cataract surgery. Changes in uncorrected distant visual acuity (UCDVA), best corrected distant visual acuity (BCDVA), uncorrected intermediate visual acuity (UCIVA), refraction, residual astigmatism, rotation of the IOL axis, and higher order aberrations at 3 months postoperatively were evaluated. Vector analysis was performed using the Alpins method.

Results: Both groups showed significant reduction in refractive astigmatism after the surgery (Precizon: - 1.06 ± 0.94 Diopter (D) to - 0.31 ± 0.29 D, p = 0.042; Tecnis: - 1.83 ± 1.29 D to - 0.41 ± 0.33 D, p = 0.015). There was no significant (p > 0.05) difference in postoperative UCDVA, BCDVA, or residual astigmatism between the two groups, although a tendency of better UCIVA was observed in the Precizon group. Vector analysis parameters showed no statistically significant difference beween groups(P > 0.05). Significant difference in rotation of toric IOL axis was found between the two groups (Precizon: 1.50° ± 0.84, Tecnis: 2.56° ± 0.68, p = 0.010). Spherical aberration in the Precizon group was significantly (p = 0.005) lower than that in the Tecnis group.

Conclusions: The Precizon toric IOL group had better rotational stability at 3-month postoperatively. Both Precizon toric IOL and Tecnis toric IOL could be effectively used by cataract surgeons to correct preexisting corneal astigmatism through cataract surgery.

Trial registration: https://ichgcp.net/clinical-trials-registry/NCT03085901" title="See in ClinicalTrials.gov">NCT03085901 , retrospectively registered on 21 March 2017.

Keywords: Astigmatism; Intraocular Lens; Precizon; Tecnis; Toric.

Conflict of interest statement

Ethics approval and consent to participate

The study was approved by the Internal Review Board of Samsung Medical Center, and written informed consent was obtained from all of the participants.

Consent for publication

Not applicable.

Competing interests

The authors declare that they have no competing interests.

Publisher’s Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Figures

Fig. 1
Fig. 1
Schematic images of the toric intraocualr lens. a: Precizon toric intraocular lens. b: Tecnis toric intraocular lens (b)
Fig. 2
Fig. 2
Slit lamp images of the toric intraocular lens at 3 months postoperatively. a: Precizon toric intraocular lens. b: Tecnis toric intraocular lens. The axis markings can be clearly seen

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