Biomechanical aspects of the anterior capsulotomy.
We used the finite element method to evaluate different capsulotomy techniques. Nucleus expression was simulated in a computer model to visualize stress distribution in the anterior capsule. The finite element model demonstrated that the capsulorhexis edge is strong because of low and uniform stress distribution in the tissue. With can-opener and envelope capsulotomies, areas of high stress accumulation create the risk of tears during surgery.
Krag
S
S
Department of Ophthalmology, Vejle Hospital, Denmark.
Thim
K
K
Corydon
L
L
Kyster
B
B
D002387:Cataract Extraction / Q000009:adverse effects; D003198:Computer Simulation; D006801:Humans; D007431:Intraoperative Complications / Q000209:etiology / Q000503:physiopathology; D007903:Lens Capsule, Crystalline / Q000293:injuries / Q000502:physiology*; D008433:Mathematics; D013314:Stress, Mechanical; D014947:Wounds and Injuries / Q000209:etiology / Q000503:physiopathology