Comparative Assessment of Clinical Results in Various Acrylate IOLs

PURPOSE: To assess the clinical results of various acrylic intraocular lenses (IOLs) after cataract surgery with respect to the tilting and decentration of IOLs, postoperative high-order (HO) aberration, and duration to gain of refractive stability. METHODS: This prospective study comprised 60 eyes of 53 patients after uneventful cataract surgery with IOLs implantation. Patients were randomized into four groups of 15 eyes each based on IOLs type: MA60BM, SA60AT, AR40e, or Akreos. We analyzed the extent of IOL decentration, tilting and the difference between preoperative predictive refraction and postoperative actual refraction at 1 day, 1 week, 1 month and 2 months after surgery. The postoperative HO aberration was determined at 2 months after surgery. RESULTS The extent of IOL decentration and tilting was not statistically significant among any of the groups (p>0.05). The spherical aberrations, the triangular coma aberrations and HO RMS values were, however, statistically significantly different among the groups (p<0.05). Refractive stability was gained by 2 months in all four groups, but the four IOLs differed in the time to refractive stability: 2 months in the MA60BM group, 1 month in the SA60AT group, 1 day in the AR40e group, and 1 week in the Akreos Adapt group. CONCLUSIONS: All four acrylic IOLs provided satisfactory postoperative results, but there were differences in the time to gain of refractive stability and HO aberration between the four IOLs. These results suggest that a surgeon could achieve a better clinical outcome after cataract surgery by selecting the most suitable IOL for his intention.

Comparative Assessment of Clinical Results in Various Acrylate IOLs

PURPOSE: To assess the clinical results of various acrylic intraocular lenses (IOLs) after cataract surgery with respect to the tilting and decentration of IOLs, postoperative high-order (HO) aberration, and duration to gain of refractive stability. METHODS: This prospective study comprised 60 eyes of 53 patients after uneventful cataract surgery with IOLs implantation. Patients were randomized into four groups of 15 eyes each based on IOLs type: MA60BM, SA60AT, AR40e, or Akreos. We analyzed the extent of IOL decentration, tilting and the difference between preoperative predictive refraction and postoperative actual refraction at 1 day, 1 week, 1 month and 2 months after surgery. The postoperative HO aberration was determined at 2 months after surgery. RESULTS The extent of IOL decentration and tilting was not statistically significant among any of the groups (p>0.05). The spherical aberrations, the triangular coma aberrations and HO RMS values were, however, statistically significantly different among the groups (p<0.05). Refractive stability was gained by 2 months in all four groups, but the four IOLs differed in the time to refractive stability: 2 months in the MA60BM group, 1 month in the SA60AT group, 1 day in the AR40e group, and 1 week in the Akreos Adapt group. CONCLUSIONS: All four acrylic IOLs provided satisfactory postoperative results, but there were differences in the time to gain of refractive stability and HO aberration between the four IOLs. These results suggest that a surgeon could achieve a better clinical outcome after cataract surgery by selecting the most suitable IOL for his intention.

The Clinical Results of Hydrophobic Single-Piece Acrylic Intraocular Lenses after Cataract Surgery

PURPOSE: To report the results of the clinical use of single-piece acrylic intraocular lenses (IOLs; AcrySof(R), SA60AT, Alcon) compared with three-piece acrylic IOLs (AcrySof(R), MA60BM, Alcon) after cataract surgery. METHODS: We retrospectively analyzed data of the extent of IOL decentration and tilting measured with Scheimpflug camera (EAS-1000 anterior eye segment analysis system, Nidek) at 1 week, 1 month and 2 months after surgery, the difference in the preoperative predictive refraction and the postoperative actual refraction, and the higher order RMS (root mean square) value with WASCA wavefront analyzer (Carl Zeiss Meditec, Germany) between the two groups (SA60AT group: N=30 , MA60BM group: N=30). RESULTS: The extent of IOL decentration was statistically insignificant in both groups (p>0.05), but the amount of IOL tilting in the SA60AT group was significantly less than that in the MA60BM group at 1 week, 1 month and 2 months postoperatively (p<0.05). There was no statistically significant difference in the preoperative predictive refraction and the postoperative actual refraction between the two groups. The triangular coma aberrations and the higher order (HO) RMS values were, however, significantly less in the SA60AT group (p<0.05). CONCLUSIONS: The SA60AT IOLs provided a better postoperative centration and a smaller HO RMS value than the MA60BM IOLs. Based on these results, we expect that SA60AT IOLs will provide a better clinical outcome in the aspect of quality of vision.