caa a22 4500 465777783 CHVBK 20180323111947.0 cr unu---uuuuu 170327e19900701xx s 000 0 eng 10.1007/BF00920063 doi (NATIONALLICENCE)springer-10.1007/BF00920063 Forces on intraocular lens haptics induced by capsular fibrosis [Elektronische Daten] An experimental study [R. Guthoff, F. Abramo, J. Draeger, L. Chumbley, G. Lang, W. Neumann] Electronic dynamometry measurements, performed upon intraocular lens (IOL) haptics of prototype one-piece three-loop silicone lenses, accurately defined the relationships between elastic force and haptic displacement. Lens implantations in the capsular bag of dogs (loop span equal to capsular bag diameter, loops undeformed immediately after the operation) were evaluated macrophotographically 5-8 months postoperatively. The highly constant elastic property of silicon rubber permitted quantitative correlation of subsequent in vivo haptic displacement with the resultant force vectors responsible for tissue contraction. The lens optics were well centered in 17 (85%) and slightly offcenter in 3 (15%) of 20 implanted eyes. Of the 60 supporting loops, 28 could be visualized sufficiently well to permit reliable haptic measurement. Of these 28, 20 (71 %) were clearly displaced, ranging from 0.45 mm away from to 1.4 mm towards the lens' optic center. These extremes represented resultant vector forces of 0.20 and 1.23 mN respectively. Quantitative vector analysis permits better understanding of IOL-capsular interactions. Springer-Verlag, 1990 Guthoff R. Universitäts-Augenklinik, Martinistrasse 52, D-2000, Hamburg, Germany aut Abramo F. Universitäts-Augenklinik, Martinistrasse 52, D-2000, Hamburg, Germany aut Draeger J. Universitäts-Augenklinik, Martinistrasse 52, D-2000, Hamburg, Germany aut Chumbley L. Universitäts-Augenklinik, Martinistrasse 52, D-2000, Hamburg, Germany aut Lang G. Universitäts-Augenklinik Erlangen-Nürnberg, D-8520, Erlangen, Germany aut Neumann W. Schule für Tiermedizin, D-6300, Giessen, Germany aut Graefe's Archive for Clinical and Experimental Ophthalmology Springer-Verlag 228/4(1990-07-01), 363-368 0721-832X 228:4<363 1990 228 417 https://doi.org/10.1007/BF00920063 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00920063 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Guthoff R. Universitäts-Augenklinik, Martinistrasse 52, D-2000, Hamburg, Germany aut NATIONALLICENCE 700 1- Abramo F. Universitäts-Augenklinik, Martinistrasse 52, D-2000, Hamburg, Germany aut NATIONALLICENCE 700 1- Draeger J. Universitäts-Augenklinik, Martinistrasse 52, D-2000, Hamburg, Germany aut NATIONALLICENCE 700 1- Chumbley L. Universitäts-Augenklinik, Martinistrasse 52, D-2000, Hamburg, Germany aut NATIONALLICENCE 700 1- Lang G. Universitäts-Augenklinik Erlangen-Nürnberg, D-8520, Erlangen, Germany aut NATIONALLICENCE 700 1- Neumann W. Schule für Tiermedizin, D-6300, Giessen, Germany aut NATIONALLICENCE 773 0- Graefe's Archive for Clinical and Experimental Ophthalmology Springer-Verlag 228/4(1990-07-01), 363-368 0721-832X 228:4<363 1990 228 417 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer