Functional performance and positional stability of a rhexis-fixated IOL

Session Details

Session Title: Extended-Depth-Of-Focus IOLs I

Session Date/Time: Sunday 15/09/2019 | 14:00-16:00

Paper Time: 14:48

Venue: Free Paper Forum: Podium 1

First Author: : P.Versace AUSTRALIA

Co Author(s): :    E. Darian-Smith                             

Abstract Details

Purpose:

Demonstrate the visual performance and positional stability of a rhexis fixated IOL over time. The Femtis is an EDOF refractive segmental IOL based on the Oculentis design with additional elements that allow if to be fixated to the rim of the anterior capsulorhexis.

Setting:

Private practice, single surgeon, prospective data collection

Methods:

The Femtis Rhexis fixated EDOF IOLs was implanted in patients after cataract removal. Patients were followed for one year documenting visual function for distance, intermediate and near . A subjective questionnaire was applied to assess patient function, satisfaction and spectacle independence. A computer simulator was used to quantify the incidence and severity of unwanted visual phenomena such as glare and halo allowing comparison with other EDOF and multifocal IOLs. Positional stability of the rhexis fixated IOL was documented using a photographic method correlating the location of the IOL with the limbus at each post operative visit.

Results:

For 43 implants: Refractive predictability showed 96% of patients within 0.5D of intended outcome. Mean SE at 6 months was -0.2 D. 90% had N4 near VA @ 40CM binocularly, and 97% N4 for intermediate NV @ 60CM. 90% of patients saw 6/6 and N6 (40CM) binocularly. Defocus curves demonstrate EDOF behaviour similar to other diffractive EDOF IOLs Glare and halo testing showed minimal unwanted visual phenomena. The mean shift in IOL position over 6 months was 0.089mm. No cases of problems with IOL enclevation, negative dysphotopsia, decentration or capsular phimosis were seen.

Conclusions:

Rhexis fixation of the IOL offers benefits with better ELP predictability, better optic alignment with visual axis and control of the anterior capsulorhexis preventing negative dysphotopsia and capsular phimosis. This paper demonstrates the Femtis EDOF rhexis fixated IOL to offer excellent refractive predictability, functional range of vision and minimal unwanted visual phenomena. The attachment to the anterior rhexis is shown to be stable over time with no significant shift in lens position or capsular phimosis. The lens was easy to implant and patient satisfaction with spectacle independence high.

Financial Disclosure:

travel has been funded, fully or partially, by a company producing, developing or supplying the product or procedure presented