97th DOG Annual Meeting 1999

K661

A 3-DIMENSIONAL CAPSULAR BAG MODEL FOR THE INVESTIGATION OF THE BIOMECHANICAL PROPERTIES OF NEW DESIGNED IOLS

R. Beck, K. Pfeiffer, J. Stave, R. Guthoff

The objective of this study was to describe and to quantify the geometrical change of the capsular bag following implantation of different intraocular lenses (IOL), using a 3-D capsular bag model made of silicone caoutchouc.

Methods: Post implantation of 13 different IOLs (PMMA, silicone acrygel) into the artificial bag, the induced capsular bag distorsion was measured and analysed. Performing UBM-ultrasound, the posterior space between IOL and capsule was determined.

Results: PMMA IOLs with C-haptic induced a greater distorsion of the capsular bag compared to silicone lenses; however, both types showed a larger gap posterior of the IOL in comparsion to acrygel lenses. Acrygel IOLs with different haptic design revealed only minimal distorsion with close contact posteriorly.

Conclusions: The presented 3-D-model is capable to simulate biomechanical and geometrical parameters of the vital capsular bag. Further investigations may determine a correlation of close posterior IOL contact and lens epithelial cell progression.

Univ.-Augenklinik, Doberaner Str. 140, D-18057 Rostock


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