Abstract
Purpose
To compare the visual and refractive outcomes of bifocal toric and trifocal toric intraocular lenses (IOL) in patients with moderate to high myopia at 12 months after implantation.
Method
This is a prospective and comparative study. In 120 eyes with moderate to high myopia and astigmatism, bifocal toric IOLs (n = 60 eyes) or trifocal toric IOLs (n = 60 eyes) were implanted. Eyes with axial lengths from 24.0 to 26.5 mm were included. Postoperative examinations measured near, intermediate, and distance visual acuity (VA), along with refractive measurements, binocular defocus curves, and patient satisfaction with the National Eye Institute Visual Function Questionnaire.
Results
For uncorrected- and corrected distance intermediate VA, the trifocal group showed significantly better VA at 1, 3, 6, and 12 months than the bifocal group. Driving subscale scores from the questionnaire were significantly better in the trifocal than the bifocal group. Concerning the binocular defocus curve, uncorrected distance VA was significantly higher in the trifocal than bifocal group at test distances of -1.5 D.
Conclusions
Both trifocal and bifocal toric IOLs effectively corrected the near, intermediate, and distance vision in patients with moderate to high myopia and astigmatism. However, intermediate vision was significantly better in eyes with trifocal than bifocal toric IOLs.
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Code availability
Non-digital data supporting this study are stored by the corresponding author at the Lazer Eye Hospital.
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A.T. and M.G. contributed to the design and implementation of the research, to the analysis of the results and to the writing of the manuscript.
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Tekce, A., Gulmez, M. Comparison of visual and refractive outcomes of diffractive bifocal toric and trifocal toric intraocular lenses 12 months after implantation in patients with moderate to high myopia. Int Ophthalmol 41, 3029–3040 (2021). https://doi.org/10.1007/s10792-021-01865-3
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DOI: https://doi.org/10.1007/s10792-021-01865-3