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About 50 cases with a double C-loop toric IOL: cornea anatomical spotting versus corneal marking

Session Details

Session Title: Toric IOL Outcomes

Session Date/Time: Monday 07/10/2013 | 16:30-18:30

Paper Time: 17:39

Venue: Auditorium (First Floor)

First Author: : C.Chassain FRANCE

Co Author(s): :                   Nuijts

Abstract Details


Evaluation of the stability and the visual and refractive outcomes of cataract surgery after implantation of the double C-loop aspheric toric intraocular lens (IOL) in eyes with moderate to high corneal astigmatism using 2 alignment methods.


Ophthalomology, Clinique Beausoleil, Montpellier, France


This prospective study includes 50 consecutive eyes with age related cataract and corneal astigmatism (higher than 1.5 D) undergoing cataract surgery. No comorbidity was excluded. All were implanted with the Ankoris toric intraocular lens (Physiol, Belgium) through standard cataract surgery. The alignment of the IOL for the first group was done with marking of the cornea while sitting. In the second group, the IOL alignment axis was done using corneal particularity as a mark on the preoperative photo of the eye. The IOL rotation was assessed retrospectively using the slitlamp photos Visual and refractive changes were evaluated for 3-month. Refractive and stability outcomes were evaluated with vectorial method.


The IOL cylinder ranged from 1.5 to 6D in both group. 97% of postoperative spherical equivalent were within ± 1D and visual acuity was 0.8 or better in 91% of cases in both group. In group one, one repositioning was required. The average alignement error was significantly lower in group 2 than in group 1 (p<0.05). One IOL rotated of more than 30° in a patient with zonular laxity. Otherwise the IOL remained stable with no rotation greater than 5°.


Correcting the astigmatism at the time of cataract surgery is safe, efficient and a real improvement for the patient especially for high astigmatism who will not experiment anymore. Double C-loop design provides an easy peroperative positioning and stability postoperatively. The improvement of the IOL alignment using anatomic mark was demonstrated in this comparative case series.

Financial Interest:

... gains financially from product or procedure presented

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