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Published on: June 6, 2017
[Comparison of optical performance and stability of five different kinds of aspheric IOLs]
Xiao-jie Xing1, Xin Tang, Hui Song
1Clinical College of Ophthalmology of Tianjin Medical University, Tianjin 300020, China.
Objective:
To compare the optical performance and stability of different kinds of aspheric IOLs.
Methods:
It was a retrospective case series study. Five different kinds of aspheric IOLs were implanted into 130 eyes after cataract operation, including hydrophilic acrylic IOLs (AO, Bausch&Lomb), 25 eyes; hydrophilic acrylic IOLs (20H, Rayner), 20 eyes; 3-piece hydrophilic acrylic IOLs (PY60AD, HOYA), 30 eyes; acrylic IOLs (ZC, B00, AMO), 25 eyes; and 3-piece hydrophobic acrylic IOLs (Tecnis 9003, ZA9003, 30 eyes). Straylight on the retina was measured with C-quant. IOLs tilt and decentration were measured using Scheimpflug system (Pentacam, Oculus) and image-analysis was performed by Image-pro plus 6.0 software. Difference among groups was evaluated by analysis of variance (ANOVA). The relationship between straylight parameters and age, best corrected visual acuity (BCVA), inner HOA and MTF (HOA, high order aberration; MTF, Modulation Transfer Function) at different spatial frequencies was evaluated by Pearson correlation analysis.
Results:
The mean C-quant measurements for AO, 920H, PY60AD, ZCB00 and ZA9003 groups were 1.33 ± 0.69, 1.43 ± 0.57, 1.56 ± 0.43, 1.61 ± 0.56 and 1.71 ± 0.72, respectively, which showed no statistically significant differences (F = 0.593;P = 0.669). The straylight values in AO and 920H groups were significantly lower than that of ZCB00 and ZA9003 groups (t = 2.159, 3.271 and 2.286; P = 0.045, 0.013, and 0.046). The mean IOL decentration and tilt measurements in the 5 different groups showed no statistically significant differences (F = 4.016, 3.985; P = 0.056, 0.064).
Conclusions:
There are no significant difference in straylight between 5 different types of aspheric IOL implanted within the lens capsules. All of them show satisfy stability. One-piece design and hydrophilic material IOLs provide better optical performance than that of 3-piece 2-point haptic design.
