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Hidemasa Torii, Kazuno Negishi, Kazuhiro Watanabe, Megumi Saiki, Murat Dogru, Takefumi Yamaguchi, Naoko Kato, Kazuo Tsubota; Pre- and Post-operative Corneal, Internal, and Total Higher-order Aberrations in Patients with Iris-fixated Phakic Intraocular Lens Implantation. Invest. Ophthalmol. Vis. Sci. 2012;53(14):1383.
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© ARVO (1962-2015); The Authors (2016-present)
To study the changes in higher-order aberrations (HOAs) after phakic intraocular lens (IOL) implantation.
This retrospective study comprised 30 eyes of 17 patients (mean 39.2 years) who had Artisan® implantation (Artisan® group) and 23 eyes of 13 patients (mean 37.6 years) who had Artiflex® implantation (Artiflex® group). Corneal, internal, and total HOAs and refractive data were recorded preoperatively and at 6 months postoperatively. The coefficients of Zernike polynomials were determined up to sixth order for 6 mm pupil diameter from the wavefront data. The root-mean-square (RMS) of the total HOAs from the third- to sixth-order Zernike coefficients (total HOA-RMS) was calculated. The RMS of the third- and forth- order coefficients were used to represent coma-like aberrations (S3) and spherical-like aberrations (S4) respectively.
The mean spherical equivalent (SE) changed from -9.78 ± 3.20 diopters (D) to -0.09 ± 0.26 D, from -11.84 ± 4.90 D to -0.16 ± 0.40 D in Artiflex® and Artisan® group, respectively. HOAs are shown in Table 1 and 2. The internal and total spherical aberrations in both groups significantly increased postoperatively (P<0.0001) with no significant changes in corneal spherical aberrations. S3, S4 and total HOA-RMS in both groups also significantly increased postoperatively.
The reduction of spherical aberrations in Artisan® and Artiflex® phakic IOLs might be useful to obtain better quality of vision after surgery. Our results suggested that the increase of spherical aberrations in Artisan® and Artiflex® implantation mainly resulted from the positive spherical aberrations of both IOLs.
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