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Light distortion analysis, ocular aberrometry with pyramidal wavefront sensor and visual outcomes in patients implanted with diffractive trifocal intraocular lens: long-term follow-up

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Session Details

Session Title: Presented Poster Session: Multifocal IOLs

Venue: Poster Village: Pod 1

First Author: : R.Ferreira-Oliveira SPAIN

Co Author(s): :    A. Plaza-Puche   J. Alio           

Abstract Details


To objectively evaluate light distortion and ocular aberrometry profiles of eyes implanted with a trifocal intraocular lens (IOL) and to correlate these results with visual outcomes and patient satisfaction after long-term follow-up.


VISSUM Alicante, Spain.


Prospective observational study enrolling 20 eyes of 10 patients who underwent uneventful microincisional cataract surgery (MICS) with bilateral implantation of diffractive trifocal IOL (Finevision Micro F, PhysIOL, Belgium). After a mean follow-up period of 59.3 ± 2.0 months, patients answered a vision satisfaction questionnaire (NAVQ-10) and were assessed for uncorrected and corrected distance and near visual acuity (UDVA, CDVA, UNVA, CNVA), distance-corrected near and intermediate VA (DCNVA, DCIVA), defocus curve, light-distortion analysis (LDA, CEORLab, Portugal), Pelli-Robson contrast sensitivity function (CSF) test, corneal topography and aberrometry (Sirius, CSO) and total ocular aberrometry with a pyramidal wavefront sensor (Osiris, CSO).


Mean age was 71.9 ± 3.6 years (range 65-78). There was significant improvement of UDVA, CDVA, DCNVA and DCIVA in all eyes (P<0.01). When compared to a control group of 24 phakic eyes virgin of surgical treatment, LDA showed significantly higher values of light-distortion index and best-fit circle (BFC) radius in the study group (P<0.01). LDA parameters were significantly correlated with ocular wavefront aberrometry values in terms of higher-order aberrations (P<0.01), trefoil (P<0.01) and coma (P=0.03). Patients reported to be completely, very and moderately satisfied with their uncorrected near vision in 50%, 40% and 10% of cases, respectively.


The studied diffractive trifocal IOL provides good visual results for distance, intermediate and near vision, with high levels of patient satisfaction at long-term follow-up, although it produces significantly higher light distortion when compared to unoperated phakic eyes.

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