Letter to the editor

Abstract

[Excerpt] Recently, Alió and co-works published a study [1] comparing the clinical optical image quality of patients following implantation with different intraocular lenses (IOLs), based on the analysis of the wavefront measured with a pyramidal wavefront sensor-based aberrometer. A set of nine groups of patients was evaluated, including patients implanted with two diffractive trifocals.

Surprisingly, accordingly to the results reported by the authors, the group implanted with the trifocal diffractive AT Lisa stands out in terms of distance image quality calculated from the captured wavefront, with a monochromatic Strehl ratio above other groups implanted with monofocal designs. Another example of these intriguing result is the similarity in Strehl ratio between the spherical monofocal control group and the group implanted with the PanOptix trifocal. Considering that any residual refraction was accounted in the analysis and that other contributions apart from the IOL design such as patient high-order aberrations, lens decentration or tilt were equally distributed between groups, the results presented in Fig. 1 are likely caused by an erroneous interpretation of the wavefront data. [...]