20.500.12556/RUL-105542 Photodisruption of a thin membrane near a solid boundary an in vitro study of laser capsulotomy A Nd:YAG laser photodisruption is a well-established tool for intraocular surgery, such as treatment of posterior capsule opacification that affects the visual function. During the intraocular procedure, called laser capsulotomy, the excitation pulse is focused several times just behind the posterior capsule and intraocular lens to create the central opening in the opacified capsule. We built an in vitro experiment to (1) clarify the influence of the distance between the intraocular lens and the posterior capsule on the total pulse energy required for the capsulotomy, and (2) investigate the main mechanisms responsible for the posterior capsule opening. In our in vitro model, different distances between the solid boundary (imitating an intraocular lens) and the membrane (imitating the posterior capsule) simulate different types of posterior capsule opacification. Our results show that procedure efficiency decreases by decreasing distance between the lens and the capsule. We also explain that for smaller distances between the pulse focus and the membrane, plasma and shock wave are responsible for the capsule disruption. Here, a risk of collateral damage significantly increases. On contrary, the membrane and the bubble jet disrupt the membrane, when pulse focus is moved away and the risk of intraocular lens damage decreases. However, the membrane disruption is not very effective, if it is placed near the solid boundary that inhibits the membrane jet. photodisruption laser capsulotomy cavitation bubble fotodisrupcija laserska kapsulotomija kavitacijski mehurček true false true Angleški jezik Slovenski jezik Članek v reviji 2018-12-05 08:44:14 2018-12-05 08:44:15 2025-03-06 10:36:15 0000-00-00 00:00:00 2016 0 0 Str. 1-7 iss. 2 Vol. 122 Feb. 2016 0000-00-00 PostprintKoncna Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 532.528(045) 0947-8396 10.1007/s00339-016-9648-z 14475803 14196007 RAZ_Hawlina_Gregor_i2016.pdf RAZ_Hawlina_Gregor_i2016.pdf 1 6E4C7277140481DFFA08F062476DF527 3b482d0a7abf2cc368276b9b77c3a5649eb00f4f60f8b33aab802c916a49868c 3238c29e-a1b6-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=116210 https://link.springer.com/article/10.1007/s00339-016-9648-z 0 837f574e-fa6d-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=200390 Fakulteta za strojništvo 0 0 0