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首页> 外文会议>Ophthalmic Technologies XVI; Progress in Biomedical Optics and Imaging; vol.7 no.24 >Preliminary study on the closure of the lens capsule by laser welding
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Preliminary study on the closure of the lens capsule by laser welding

机译：激光焊接封闭晶状体囊的初步研究

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摘要

We present a preliminary study of a new method, based on the laser welding of suitably prepared patches of capsular tissue for the closure of capsulorhexes in the lens capsule. This technique is proposed for the repair capsular breaks or tears caused by accidental traumas or ones produced intraoperatively during standard IOL implantation. Experiments were carried out ex vivo on freshly enucleated porcine eyes. Patches of anterior capsular tissue, collected from donor eyes, were stained with a solution of Indocyanine Green (ICG) in sterile water. Closure tests on a capsulorhexis were performed by welding a stained patch onto the recipient capsule, using diode laser radiation at 810 nm, which greatly absorbed by the ICG-stained tissue. Laser radiation was delivered by means of a 200-micron-core-fiber, the tip of which was gently pressed onto the patch surface (contact welding technique) so as to produce effective tissue welding in underwater conditions. Laser-welded capsular tissue was found to have good resistance to mechanical load, comparable in fact to that of healthy tissue.
机译：我们介绍了一种新方法的初步研究，该方法基于激光焊接的适当准备的囊膜片，用于闭合晶状体囊中的肩s骨。提出该技术用于修复因意外创伤或在标准IOL植入过程中术中产生的创伤而造成的囊破裂或撕裂。在新鲜去核的猪眼上进行离体实验。用无菌水中的吲哚菁绿（ICG）溶液对从供体眼睛收集的前囊组织斑进行染色。通过使用810 nm的二极管激光辐射将染色的贴片焊接到受体囊上，对撕囊进行封闭测试，该辐射被ICG染色的组织极大地吸收了。激光辐射是通过200微米的芯纤维传送的，其尖端被轻轻地压在贴片表面（接触焊接技术），以便在水下条件下进行有效的组织焊接。发现激光焊接的荚膜组织对机械负荷具有良好的抵抗力，实际上与健康组织相当。

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