[Elasticity of capsulorhexis in the animal model].
A special caliper was designed to determine the stretching capacity of a circular capsulorhexis allowing measurements in 0.02 mm increments. A small capsulorhexis 4.5-6.0 mm in diameter could be stretched 2.7 times; a large capsulorhexis 6.5-8.0 mm in diameter was stretched 2.6 times the original diameter. A smooth circular capsulorhexis is very strong and stabile but also has significant stretching capacity. In a small capsulorhexis, there is the danger that zonular fiber defects or posterior capsular rupture may occur during manual expression, of the nucleus. A large capsulorhexis is more suitable for manual nucleus delivery.
Imkamp
E
E
Augenklinik, Rheinisch-Westfälische Technische Hochschule Aachen.
Effert
R
R
Böhmer
H
H
Reim
M
M
D000818:Animals; D002387:Cataract Extraction / Q000295:instrumentation*; D004548:Elasticity; D007903:Lens Capsule, Crystalline / Q000503:physiopathology / Q000601:surgery*; D007910:Lenses, Intraocular; D013552:Swine; D013718:Tensile Strength
Die Dehnungskapazität der Kapsulorhexis im Tiermodell.