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Precizon toric IOL for astigmatism correction in cataract surgery

Poster Details

First Author: T.Queirós PORTUGAL

Co Author(s):    T. Monteiro   F. Faria Correia   N. Franqueira   F. Vaz           

Abstract Details


To evaluate the refractive outcomes and rotational stability of the PRECIZON Toric IOL (Ophtec) for the correction of preexisting corneal astigmatism in patients undergoing routine cataract surgery.


Department of Ophthalmology, Hospital de Braga, Portugal.


Patients with cataract and corneal astigmatism above 1 diopters(D) measured by ALLEGRO Biograph (Wavelight) were included in this prospective study. Pentacam HR (Oculus) was performed in all patients pre-operatively and the cornea was marked in the sitting position with a pendulum marker. The minimun follow-up was 3 months. Uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), residual refractive sphere, residual keratometric and refractive cylinders, and toric IOL axis were measured before and 1 day, 1 week, 1 month and 3 months after surgery. IOL misalignment and rotational stability were assessed by retroillumination photographs and by OPD-SCAN III (Nidek).


Twenty-four eyes of twelve patients were included in this study. The mean pre-operative corneal astigmatism was 2,92D and the mean post-operative refractive cylinder was 0,77D. The mean post-operative UDVA was 0,68. A post-operative spherical equivalent of ±0,5D was observed in 88% of the eyes. Mean IOL rotation was 3,6 degrees with 96% of the eyes with an IOL rotation inferior to 10 degrees. The IOL was repositioned in one eye. A positive statistical correlation was found between the size of the capsular bag and the rotation of the IOL (R=0,55; p=0,03). No complications were observed.


Implantation of the PRECIZON Toric is a safe and effective method to correct corneal astigmatism in patients undergoing routine cataract surgery. The IOL showed a good rotational stability.

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