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Stability of Refraktion und Accommodation during One-Year Follow-up after Implantation of the Accommodative 1 CU Posterior Chamber Lens

1Küchle M., 1Nguyen N. X., 1Langenbucher A., 1Gusek-Schneider G. C., 2Huber S., 1Seitz B.,
1Friedrich-Alexander-Universität, Augenklinik (Erlangen)
2HumanOptics AG (Erlangen)

Purpose: Initial results with the accommodative 1 CU posterior chamber lens (PCIOL) have been encouraging. However, so far data of longer follow-up are not available. Therefore it was the aim of this study to investigate refraction and accommodation during one-year follow-up.
Method: We performed a prospective follow-up study to analyze refraction and accommodation in 11 eyes of 11 patients that underwent implantation of the 1CU PCIOL by one surgeon. Mean patient age was 66±13 (46 - 86) years. We compared the results of measurements obtained 3 months and 12 months after surgery. Measurements included: Distance refraction, near visual acuity (Birkhäuser charts in 35 cm) obtained with best distance correction, subjective near point obtained with distance correction, accommodative range measured by streak retinoscopy, and anterior chamber depth determined with the IOL Master without pupil dilation or constriction.
Results: We obtained the following results after 3 months/12 months: Mean distance refraction -0.61 ± 0.90/-0.60 ± 0.84 D, median distance corrected near visual acuity (Birkhäuser charts in 35 cm) 0.3 (0.1-0.7)/0.3(0.1-0.6), median distance corrected near point 57 (40-150)/57 (42-158) cm, mean retinoscopically determined accommodative range 1.13 ± 0.42/1.11 ± 1.42 D, mean anterior chamber depth 4.39 ± 0.60/ 4.26 ± 0.73 mm. None of the measurements showed any statistical difference between the 3 month- and the 12 month results (p>0.5).
Conclusions: Our results with the 1 CU PCIOL indicate stability of refraction and accommodation during the first 12 months following implantation. So far there were no signs of change of refraction or reduction of pseudophakic accommodation induced by fibrosis or contraction of the capsular bag.