Особенности витреолентикулярного интерфейса артифакичного глаза

Abstract

Replacing the native lens with an intraocular lens (IOL) causes anatomical and topographic changes in the anterior segment of the eye. The optical coherence tomography (OCT) technology allows to study the features of the postoperative transformation of the capsular bag and the vitreolenticular interface. Purpose. To study the features of the vitreolenticular interface after the standard lens surgery with IOL implantation. Material and methods. This work was based on the OCT study of 66 patients (86 eyes), aged 22 to 94 years with pseudophakia after the standard phacoemulsification of age-related cataracts (81 cases) or refractive lens replacement (5 cases) with intracapsular implantation of different hydrophobic flexible IOL designs. The OCT analysis of pseudophakic eye features was performed in the early and late postoperative period. Results. Statistically significant changes were revealed: an increase in the anterior chamber depth, a decrease in the «lens thickness» from 4.46±0.53 mm (native lens) up to 0.71±0.18 mm (IOL) and a shift of the posterior capsule forward along the optical axis by 2.26±0.34 mm. A large variability in the configuration of the vitreolenticular interface in the early and late postoperative period was noted. An analysis of the relationships features of the IOL, posterior capsule and the anterior hyaloid membrane allowed to identify some patterns of postoperative transformation of the vitreolenticular interface. Conclusion. Significant anatomical and topographic changes after lens surgery were revealed: a deepening of the anterior chamber, a decrease in the «lens thickness», a forward shift in the position of the posterior lens capsule. Several variants of dynamic transformation of the vitreolenticular interface were detected in the early postoperative period with subsequent outcomes in three types of stable configuration, reflecting the degree of involution of the structures and their tolerance to surgical trauma.