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Makoto Inoue, Daisuke Kunita, Yuji Itoh, Akito Hirakata; Effect of optical diameter of intraocular lenses with intrascleral fixation in higher-order aberrations. Invest. Ophthalmol. Vis. Sci. 2016;57(12):1308.
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© ARVO (1962-2015); The Authors (2016-present)
Intraocular lenses (IOLs) extended when IOLs were used for intrascleral fixation. The higher-order aberrations (HOAs) of IOLs were evaluated when the haptics were fixed intrasclerally.
An acrylic three-piece IOLs of 6.0 mm optics (X-60; VA-60BBR) and 7.0 mm optics (X-70; VA-70AD) were fixed at a length of 13, 14, 15, 16, and 17 mm. A wavefront analyzer was used to measure the HOAs within the central 3.0 and 5.2 mm optic diameters.
The astigmatic aberrations of all the three-piece IOLs within the central 5.2 mm increased significantly with an extension of the IOLs (all P<0.001) but not within central 3.0 mm. The coma aberrations of all the IOLs did not increase within the central 5.2 mm and 3.0 mm. The astigmatic aberration of X-70 was significantly higher than that of X-60 only at the length of 17mm but not at other lengths. The astigmatic aberrations of VA-70AD were not significant with those of VA-60BBR.
When three-piece IOLs are extensively extended for intrascleral fixation, the astigmatic aberrations increase significantly. However, the IOL with 7 mm optics does not have advantages to reduce astigmatic and coma aberrations for intrasclearl fixation comparing to that with 6 mm optics.
This is an abstract that was submitted for the 2016 ARVO Annual Meeting, held in Seattle, Wash., May 1-5, 2016.
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