Abstract
Purpose
To investigate the 5-year clinic outcomes of rigid iris-fixated pIOL on the visual performance, complications and intraocular light scattering in northern Chinese.
Methods
Thirty eyes implanted with iris-fixated phakic IOLs (pIOLs group) and 34 eyes with high myopia (myopia group) were involved in this study. At preoperatively, 6 months, 1, 3, and 5 years postoperatively, the uncorrected visual acuity (UCVA), best-spectacle corrected visual acuity (BSCVA), endothelial cell density (ECD), and intraocular pressure (IOP) were measured in pIOLs group. The objective scatter index (OSI), modulation transfer function cut off (MTF cut off), and Strehl ratio were measured by Optical Quality Analysis System and a pseudophakic dysphotopsia questionnaire (PDQ) was used to evaluate the subjects’ satisfaction in pIOLs and myopia groups.
Results
At 5 years postoperatively, an UCVA of 20/20 or better was found in 43.33% of eyes in pIOLs group. At 6 months, 1, 3, and 5 years postoperatively, the mean ECD decrease were 1.29% ± 0.45%, 2.59% ± 1.30%, 6.67% ± 2.26%, and 10.80% ± 3.48%. The value of OSI in pIOLs group was significantly higher than that in myopia group (P < 0.001). The PDQ results showed that the subjects in myopia group complained less with intolerance of bright lights than those in pIOLs group. The values of Strehl ratio and MTF cut off in pIOLs group were significantly lower than that in myopia group (P < 0.001).
Conclusions
Iris-fixated pIOL induce more intraocular light scattering. A significant decrease in ECD was observed at 5 years postoperatively. An annual evaluation of ECD is necessary for patients undergoing pIOL implantation.
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Data availability
All data and materials during the present study are available from the corresponding author.
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Acknowledgements
The authors thank Dr. Olson R.J. for the permission to use pseudophakic dysphotopsia questionnaire in this study.
Funding
The study was supported by Tianjin health science and technology Project (ZC20189), Tianjin eye hospital science and technology foundation (YKYB2002), and Tianjin Key Medical Discipline (Specialty) Construction Project.
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JL and HS contributed to the study design, data analysis and data interpretation. JL and LLS contributed to collecting the data, data interpretation and preparing the manuscript. Jun Li and Lin-lin Song should be considered co-first authors. All authors read and approved the final version of the manuscript.
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All procedure was in accordance with the Declaration of Helsinki and approved by Tianjin eye hospital ethics committee.
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Li, J., Song, LL. & Song, H. Five-year clinical outcomes of rigid iris-fixated phakic intraocular lens in northern Chinese. Int Ophthalmol 42, 2551–2561 (2022). https://doi.org/10.1007/s10792-022-02303-8
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DOI: https://doi.org/10.1007/s10792-022-02303-8