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Purpose To compare differences in high-order aberrations (HOAs) between 2 intraocular lens (IOL) optical designs. Setting Department of Ophthalmology, Nara Medical University, Nara, Japan. Method Sixty eyes that had uncomplicated phacoemulsification and IOL implantation were assigned to 1 of 2 groups based on the type of IOL optical design: more posteriorly curved biconvex shape (AcrySof MA30BA, Alcon) (n=30 eyes) or more anteriorly curved biconvex shape (AcrySof MA30AC) (n=30 eyes). All patients had best corrected visual acuity better than 20/25. High-order aberrations were measured using a Hartmann-Shack aberrometer at 4.0 mm and 6.0 mm wavefront aperture diameters. Results At 4.0 mm aperture diameters, there were no differences between the 2 groups in HOAs ( P >.05, Mann-Whitney U test) in the cornea and the whole eye. At 6.0 mm aperture diameters, MA30AC eyes had a smaller amount of spherical-like aberrations ( P =.043) than MA30BA eyes; however, there were no significant differences between the 2 groups in coma-like aberrations and total aberrations in the whole eye ( P >.05). At 6.0 mm aperture diameters, there were no differences between the 2 groups HOAs in the cornea. ( P >.05). Conclusion The optical design of the spherical IOL influenced the spherical-like aberrations in the whole eye. This may reduce retinal image quality.

Purpose: To compare differences in high-order aberrations between 2 intraocular lenses (IOLs), the Hydroview ® H60M (Bausch & Lomb) and AcrySof ® MA30BA (Alcon). Setting: Department of Ophthalmology, Nara Medical University, Nara, Japan. Method: Twenty-four eyes of 14 patients with a Hydroview IOL and 25 eyes of 20 patients with an AcrySof IOL who had uneventful phacoemulsification and a best corrected visual acuity better than 20/16 from 6 to 12 months after surgery were evaluated. High-order aberrations were measured using a Hartmann-Shack aberrometer at 4.0 mm and 6.0 mm wavefront aperture diameters, and IOL tilt and decentration were assessed by Scheimpflug videophotography. Results: There were no differences between the 2 groups in IOL tilt and decentration ( P >.05, Mann-Whitney U test). In the cornea, there were no differences between the 2 groups in high-order aberrations at 4.0 mm and 6.0 mm aperture diameters ( P >.05, Mann-Whitney U test). In the whole eye, there was a significant difference between Hydroview (mean 0.441 μm ± 0.147 [SD]) and AcrySof (0.696 ± 0.287 μm) IOLs in spherical-like aberrations at the 6.0 mm aperture diameter ( P = .00008, Mann-Whitney U test); there were no differences between the 2 groups in other aberrations. Conclusions: The type of IOLs influenced spherical-like aberrations. The IOL's shape was a particularly important factor in spherical-like aberrations. The aberrations may affect night driving in certain individuals.

Purpose To investigate the high-order aberrations (HoAs) in pseudophakia between 2 foldable acrylic intraocular lenses (IOL) with differences in the tilt of IOL. Setting Department of Ophthalmology, Nara Medical University, Nara, Japan. Method Sixty-four eyes that had uncomplicated phacoemulsification and IOL implantation were assigned to 1 of 2 groups: Acryfold 60BB (HOYA [n=30 eyes]) and AcrySof MA60AC (Alcon [n=34 eyes]). All patients had best corrected visual acuity better than 20/25. High-order aberrations were measured using the Hartmann-Shack aberrometer at 4.0 mm and 6.0 mm wavefront aperture diameters, and the IOL tilt and decentration were measured using Scheimpflug videophotography. Results There was a significant difference in the IOL tilt (60BB=2.22 degrees ± 1.44 (SD), 60AC=3.18 ± 1.84 degrees; P =.041, Mann-Whitney U test), but no difference in IOL decentration ( P >.05). In the cornea, there were no differences between the 2 groups in HoAs at 4.0 mm and 6.0 mm aperture diameters ( P >.05, Mann-Whitney U test). In the whole eye, there was no difference between the 2 groups in spherical-like aberrations, coma-like aberrations, and total aberrations at the 4.0 mm and 6.0 mm aperture diameters ( P >.05). The compensation of the internal optics with the 60BB group was better than with the 60AC group for coma-like ( P =.037) and total aberrations ( P =.010) at 6.0 mm aperture diameter. Conclusion The smaller tilt of the IOL induced more compensation for the coma-like and total aberrations at the 6.0 mm aperture diameter. The IOL tilt should be small, especially in a large pupil, with regard to HoAs.

Purpose: To investigate the influence of intraocular lens (IOL) tilt and decentration on higher-order aberrations (HOAs) using wavefront analysis. Setting: Department of Ophthalmology, Nara Medical University, Nara, Japan. Methods: Forty eyes of 40 patients with a 5.5 mm optic, foldable acrylic IOL were examined 4 to 48 months postoperatively. Ocular wavefront aberrations of the central 4.0 mm aperture diameter were measured using a Hartmann-Shack aberrometer. Higher-order aberrations from the 3rd to 4th order were calculated using Zernike polynomials. The relationship between IOL tilt and decentration, measured with a Scheimpflug camera, and ocular HOAs were investigated. Results: The correlation between IOL tilt and coma-like aberrations was significant ( r = 0.431, Spearman rank correlation coefficient; P = .007). However, the correlation between IOL tilt and the spherical-like and total aberrations was not significant ( P >.05), nor was the correlation between IOL decentration and coma-like, spherical-like, and total aberrations ( P >.05). Conclusions: Intraocular lens tilt influenced ocular coma-like aberrations. The quality of the retinal image may improve by reducing IOL tilt.