Estimated Visual Acuity And Clinical Validation For Presbyopia And Astigmatism Correction Iols Based On Wavefront Engineering Technology
Published 2026 - 44th Congress of the ESCRS
Reference: POCAT410 | Type: Poster | DOI: 10.82333/37cp-ym51
Authors: Ms Martina Vacalebre* 1 , Dr Sachiko Fukuoka 2 , Mrs Elena Anastasi 1 , Mr Simon Federico Spanò 1 , Ms Benedetta Castroflorio 1 , Mrs Maria Cristina Curatolo 1
1Innovation and Medical Science,SIFI SpA,Aci Sant’Antonio (CT),Italy, 2Fukuoka Eye Clinic Nakano,Tokyo,Japan
Purpose
The objective of this study is to evaluate the monocular estimated visual acuity (VA) for two simultaneous vision toric intraocular lenses (IOLs) based on wavefront engineering technology.
Setting
Innovation and Medical Science, SIFI SpA, Catania, Italy.
Methods
The monocular estimated visual acuity (VA) is a useful method to preclinically evaluate the potential benefit for the patient in terms of uninterrupted image quality from far to near distance. The Modulation Transfer Function (MTF) spatial frequency curves were measured for several distances with 0.5 D steps at 3mm pupil aperture for three different samples: two simultaneous vision toric IOLs, Mini Well Toric and Mini Well Proxa Toric, and their monofocal parent, Mini Toric Ready. For each lens, the MTF Area (MTFa) from 1 to 50 lp/mm was evaluated for several target positions and the expected visual acuity was calculated with an exponential equation. The aspheric toric monofocal Mini Toric Ready was used as control reference.
Results
Mini Well Toric and Mini Well Proxa Toric registered an estimated VA value close to 0 logMAR at far position (0 D). Subsequently, both simultaneous vision toric IOLs registered a progressive constant VA value ranged between 0 logMAR and the clinical threshold equal to 0.2 logMAR up to near targets. The Mini Toric Ready IOL registered a peak for far vision at 0 D and a subsequent monotonically decreasing estimated visual acuity, as expected for an aspheric monofocal IOL. The estimated VA results demonstrated the uninterrupted extension of the depth of focus of the two toric IOLs based on wavefront engineering technology.
Conclusions
The validation of the results was carried out through comparison either with the clinical data reported in literature or provided by private clinical practice. The expected visual acuity of the three samples seems to slightly overestimate the clinical visual acuity. However, the trend obtained with the optical assessment is consistent with the clinical outcome. The extension of the depth of focus is confirmed for the two toric IOLs based on wavefront engineering technology.