Back to Journals » Clinical Ophthalmology » Volume 10

Astigmatism management in cataract surgery with Precizon® toric intraocular lens: a prospective study

Authors Vale C, Menezes C, Firmino-Machado J, Rodrigues P, Lume M, Tenedório P, Menéres P, Brochado MDC

Received 27 June 2015

Accepted for publication 21 October 2015

Published 19 January 2016 Volume 2016:10 Pages 151—159

DOI https://doi.org/10.2147/OPTH.S91298

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Yang Liu

Peer reviewer comments 3

Editor who approved publication: Dr Scott Fraser


Carolina Vale,1 Carlos Menezes,2 J Firmino-Machado,3 Pedro Rodrigues,2 Miguel Lume,1 Paula Tenedório,2 Pedro Menéres,Maria do Céu Brochado1

1Department of Ophthalmology, Hospital Geral de Santo António – Centro Hospitalar do Porto, EPE, Porto, 2Department of Ophthalmology, Hospital de Pedro Hispano, Matosinhos, 3Public Health Unit, ACES – Porto Ocidental, Porto, Portugal


Purpose: The purpose of this study was to evaluate the visual and refractive outcomes and rotational stability of the new aspheric Precizon® toric intraocular lens (IOL) for the correction of corneal astigmatism in cataract surgery.
Setting: Department of Ophthalmology, Hospital Geral de Santo António – Centro Hospitalar do Porto, EPE and Hospital de Pedro Hispano, Matosinhos, Portugal.
Design: This was a prospective clinical study.
Patients and methods: A total of 40 eyes of 27 patients with corneal astigmatism greater than 1.0 diopter (D) underwent cataract surgery with implantation of Precizon® toric IOL. IOL power calculation was performed using optical coherence biometry (IOLMaster®). Outcomes of uncorrected (UDVA) and best-spectacle corrected distance visual acuities (BCDVA), refraction, and IOL rotation were analyzed at the 1st week, 1st, 3rd, and 6th month’s evaluations.
Results: The median postoperative UDVA was better than preoperative best-spectacle corrected distance visual acuity (0.02 [0.06] logMAR vs 0.19 [0.20] logMAR, P<0.001). At 6 months, postoperative UDVA was 0.1 logMAR or better in 95% of the eyes. At last follow-up, the mean spherical equivalent was reduced from -3.35±3.10 D to -0.02±0.30 D (P<0.001) with 97.5% of the eyes within ±0.50 D of emmetropia. The mean preoperative keratometric cylinder was 2.34±0.95 D and the mean postoperative refractive cylinder was 0.24±0.27 D (P<0.001). The mean IOL rotation was 2.43°±1.55°. None of the IOLs required realignment.
Conclusion: Precizon® toric IOL revealed very good rotational stability and performance regarding predictability, efficacy, and safety in the correction of preexisting regular corneal astigmatism associated with cataract surgery.

Keywords: astigmatism, cataract surgery, toric intraocular lens, stability, implantation outcomes

Creative Commons License This work is published and licensed by Dove Medical Press Limited. The full terms of this license are available at https://www.dovepress.com/terms.php and incorporate the Creative Commons Attribution - Non Commercial (unported, v3.0) License. By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. For permission for commercial use of this work, please see paragraphs 4.2 and 5 of our Terms.

Download Article [PDF]  View Full Text [HTML][Machine readable]