gms | German Medical Science

To report the visual outcomes and higher order aberration analysis of modified monovision after cataract surgery using the Rayner EMV IOL.

This was a retrospective analysis of the outcomes of consecutive patients undergoing cataract surgery using the Rayner EMV lens. All patients had visually significant cataract prior to surgery. EMV lenses were used to target plano in the dominant eye and -1.50 in the reading eye. Outcomes measured were pre and post op UDVA and CDVA, pre and post op UNVA and CNVA, pre and post op refractions, and pre and post op whole eye, internal and corneal spherical aberration levels (using Osiris aberrometer CSO).

20 eyes from 11 patients were included in the analysis. 75% of patients were 20/20 N5 or better unaided after surgery. The other patients (15%) were 20/25 N5 unaided. All patients were within +/- 0.25D of the intended Spherical Equivalent. 75% of eyes intended for reading had 20/63 or better unaided distance vision and 75% of eyes intended for distance had N8 or better unaided reading vision. All patients had negative corneal spherical aberration prior to surgery. The average post operative internal spherical aberration was -0.03 microns. The average whole eye spherical aberration post operatively was -0.07 microns. The average change in whole eye spherical aberration was -0.01 microns.

The visual outcomes were excellent and suggest that the EMV lens increases depth of focus through spherical aberration induction. However, the analysis did not show a consistent level of spherical aberration induction. This analysis was based on a very limited sample size and further analysis of more cases is required to draw firm conclusions.