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First Author: S.Kuznetsov RUSSIA
Co Author(s): T. Silnova T. Galeev
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Clinical study of new open-bag device CB expander model.
1 Penza Federal State Department of Ophthalmology, Institute for Postgraduate Medical Studies of the Ministry of Health, Penza, Russia.; 2 The Penza Regional Eye Hospital, Penza, Russia.
Hydrophobic acrylic CB expander by Reper-NN Ltd. 5.5 x 15.5 x 0.2 mm by size made in the form of a plate having an optical part without diopters and plate torsion haptic. The device was clinically studied on 23 cataract eyes of 20 patients. The expander used independently during a routine PHACO in surgical treatment of cataract at high myopia (15 eyes) or in combination with various models of IOLs in cases of age-related cataract (8 eyes). In these cases, the IOL was disposed in the capsular bag perpendicularly to previously implanted expander. UBM were used in pre-op and post-op period to determine the native lens parameters, post-op CB parameters and expander or expander with IOL assessment in CB. Follow-up was from 6 months to 4 years (mean 2.8 ±1.3 years).
All operations were uneventful. Visual acuity was 0.71 ±0.27 and consistent with retinal visual acuity. The immediate effect of the CB shape recovery was obtained in all cases after surgery and remained throughout the follow-up period. CB ovalisation according to UBM (CB sizes were the same in all meridians) was absent as IOL and expander contact, the position of both implants were stable for the entire follow-up. Posterior capsule opacification and CB folds formation were not observed in any case of follow-up.
It was established that the new open-bag device model (CB expander) is safe in using and allows reconstructing the CB shape. The effect is related to the fact that its plate torsion haptic is adapted to the individual size of CB due to its original design and optimal parameters. Independent implantation or with different IOLs models is available.