Long-term observation of surface light scattering in a foldable acrylic intraocular lens
Kazunori Miyata1, Masato Honbo1, Ryohei Nejima1
1From the Miyata Eye Hospital, Miyakonojo, Japan.
Purpose:
To observe time-course changes in surface light scattering after Acrysof intraocular lens (IOL) implantation over 6 years postoperatively and its influence on visual function.
Setting:
Miyata Eye Hospital, Miyakonojo, Miyazaki, Japan.
Design:
Retrospective comparative case series.
Methods:
Clinical records of eyes that had implantation of an Acrysof IOL (Group 1) or another IOL model (AR40 or Clariflex) (Group 2) were evaluated. Postoperative examinations including light scattering on the anterior surface of the IOL, corrected distance visual acuity (CDVA), and contrast sensitivity were performed 1 month and 3 years postoperatively. The same examinations were performed over the extended postoperative period, allowing analysis of time-course changes in surface light scattering and visual function.
Results:
The study evaluated 24 eyes, 14 in Group 1 and 10 in Group 2. The mean time to the last postoperative examination was 8.4 years ± 1.0 (SD) (range 6.5 to 10 years). Surface light scattering in Group 1 increased, even after 3 years, at a rate of 12.02 computer-compatible tapes per year. Scattering did not increase in Group 2. The CDVA remained unchanged 3 to 6 or more years postoperatively in both groups. There was no difference in contrast sensitivity between the 2 groups 6 or more years postoperatively.
Conclusion:
Surface light scattering increased in Group 1, even after 3 years postoperatively; however, it did not affect visual function.
Financial Disclosure:
No author has a financial or proprietary interest in any material or method mentioned.
