MAR 03, 2014
This retrospective study found that diffractive multifocal IOLs provide comparable long-term visual results to monofocal IOLs despite significantly increased surface light scatter.
It’s a relief to see that acuity and contrast weren't hindered despite glistening.
The authors reviewed the charts of 18 patients who underwent phacoemulsification and implantation of a diffractive multifocal IOL (Acrysof Restor SA60D3) or a monofocal IOL (Acrysof SA60AT).
At six years postop, anterior surface light scattering was more than 100 computer compatible tape units in both groups, with no significant difference between groups (P = 0.417).
The mean CDVA and CNVA in the multifocal IOL group was ‑0.06 logMAR and ‑0.04 logMAR, respectively. However, CNVA decreased significantly in both groups, and CDVA decreased in the monofocal group.
Contrast sensitivity was within normal range at all spatial frequencies in both groups. There were no significant correlations between surface light scattering and the changes in corrected visual acuities (distance or near) between one year and six years postoperatively in either group.
The authors say the reason for the decrease in the CNVA in both groups over six years was unclear. They hypothesize that aging and mild posterior capsule opacification may have been the cause.
They conclude that while good visual acuity was retained in those with monofocal and multifocal hydrophobic acrylic IOLs over six years despite increased surface light scattering, further studies with more patients and a longer follow-up are needed to confirm these results.