Posters

Evaluation of refractive and visual outcomes, as well as astigmatism-correcting efficiency and rotational stability of a double-loop haptic toric intraocular lens: a one year follow-up

Poster Details

First Author: L.Novacek CZECH REPUBLIC

Co Author(s):                        

Abstract Details

Purpose:

The aim of our present study was to assess the manifest refraction and visual outcomes, predictability of the results, the efficiency in astigmatism-correction, and rotational stability after 12 months following the implantation of the Bi-Flex 677TAY (Medicontur) monofocal toric intraocular lens (IOL) designed for cataract patients with preoperative astigmatism.

Setting:

Department of Ophthalmology, Institute of Aviation Medicine Prague, Prague, Czech Republic

Methods:

The intraocular lenses were implanted either mono- or binocularly into 35 eyes of 22 cataract patients with mild corneal astigmia (preoperative cylindric refraction range on the spectacle plane was -0.5 dioptres [D] to -3.75 D), following a routine cataract surgery. Uncorrected and corrected distance visual acuities, corrected near visual acuity, as well as off-axis rotation were assessed throughout a 1-year follow-up period. Apart from the comparison of pre- and postoperative spherical and cylindrical refractions and visual acuities, a vector analysis based on the Alpin’s method was performed to assess the efficiency of astigmatism-correction, and the predictability of the results.

Results:

IOL-implantation has brought 88% of eyes into the ±0.50 D, and 100% into the ±1.00 D range compared to the target refraction, emmetropia, and the results remained stable during the first postoperative year. Astigmatism-correction has brought similar results: 94% of eyes had a cylindric error of not more, than ±0.50 D, and 100% were within ±1.00 D, and it did not change significantly during the follow-up period. Refractive and visual outcomes were close to the preoperative estimations. No eyes have shown a rotation of more than 5°. The absolute rotation after 12 months was 1.42 ± 1.89° (Median=0.00°).

Conclusions:

Our results suggest that the Bi-Flex 677TAY monofocal IOL by Medicontur represents an efficient and safe solution for cataract patients with preoperative astigmatism. Clinical outcomes are predictable, and the double-loop haptic design which is responsible for the high degree of rotational stability helps to preserve refractive and visual outcomes even in the long-term.

Financial Disclosure:

None