Изучение особенностей интра- и послеоперационного состояния интерфейса «интраокулярная линза – задняя капсула хрусталика» при факоэмульсификации возрастной катаракты

Abstract

Presence of full contact of interface «intraocular lens (IOL) – posterior capsule (PC)» ensures the transparency of the latter in the early period after phacoemulsification (PE) of senile cataract (SC). The main reasons for absence of full contact of IOL with PC are: the presence of residuals of viscoelastic (VE) in the capsular bag, uneven tension of the capsule by the haptic elements of the IOL, and the incommensurability of the size of the IOL with the capsule. Purpose. To study the features of the intra- and postoperative state of interface «IOL – PC» during PE SC. Material and methods. Dynamic observation of 42 patients (42 eyes), who operated on immature senile cataracts, was carried out. All operations were performed using OPMI LUMERA 700 surgical microscope (Carl Zeiss Meditec AG, Jena, Germany) with integrated intra-operative OCT, state of interface «IOL – PC» was examined. 2 hours after and on the 1st day after the operation state of interface «IOL – PC» was studied in all eyes by OCT on Optovue RTVue-100 (Optovue, Inc., US) with module for anterior segment examining to protocols «Cornea Line» and «Cornea Cross Line». Results. During the operation, the presence of contact between IOL and PC was observed only in 9 eyes (21.4%). 2 hours after surgery, 40 eyes (95.2%) had absence of contact between lens and capsule. On the 1st day after surgery, the optimal interface between IOL and PC was observed in 32 eyes (76.2%). Conclusion. Studies have shown that state of interface «IOL – PC» on the 1st day does not depend on its characteristics revealed intraoperative and 2 hours after the operation. The main reason for absence of contact between IOL and PC is residues of VE, and the using «impulse-irrigation» technique allows completely removing VE from the central zone of the capsule in all cases. Key words: cataract, phacoemulsification, intraocular lens, lens capsule, viscoelastic, interface «IOL – PC».