Posters

Enhancing plate-haptic toric IOLs' rotational stability in high myopia using a Cionni ring

Poster Details

First Author: C.Tataru ROMANIA

Co Author(s):    A. Dogaroiu   C. Tataru   C. Dogaroiu              

Abstract Details

Purpose:

In our daily practice we frequently encounter patients with high myopia associated with a higher or a lower degree of astigmatism. Under these conditions, lens replacement can be a challenge because not all artificial lens manufacturers produce toric IOLs for extreme diopter values. ZEISS provides such artificial lenses for customized diopters, employing a plate-haptic design. As cited by specialized literature, eyes with a high axial length are associated with large capsular bags. The implantation of a standard-sized plate-haptic toric IOL in a large capsular bag predisposes to microrotations and macrorotations. Our technique may help prevent such accidents

Setting:

Alcor Ophthalmology Clinic, Bucharest, Romania

Methods:

After performing the initial steps in the lens replacement surgery, a plate-haptic toric IOL (AT LISA, ZEISS) is implanted. The anterior chamber is then filled with OVD. Atraumatic forceps are used to remove a two-eyelet Cionni ring from its support. The ring is reversed so that its two eyelets, which are slightly anteriorly displaced, should be posteriorly oriented. The ring is then implanted and placed so that it would press the IOL to the posterior capsule. The whole complex is then centered on the corresponding axis and the viscoelastic substances are thoroughly washed. At the end the incisions are hydrated.

Results:

We decided to use this technique after a plate-haptic toric IOL of a patient with high myopia underwent three rotations. We used this technique in the same patient, for the second eye, as well as in four other patients (seven eyes) with extreme diopter values. In all these cases, we achieved both short-term and long-term rotational stability.

Conclusions:

This might be a solution for maintaining rotational stability in high myopia associated with plate-haptic toric IOLs. Another solution might be that artificial lens manufacturers customize not only the diopters, but also the size of artificial lenses.

Financial Disclosure:

None