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Capsule tension rings (CTR) using supplementary optic reconstructive surgery in default of the capsular support

Poster Details

First Author: S.Kuznetsov RUSSIA

Co Author(s):                  

Abstract Details



Purpose:

Analysis of clinical results of out-capsule implantation of CTR model with IOL fixation elements in cases of default of the capsular support.

Setting:

Department of Ophthalmology, Penza Federal State Institute for Postgraduate Medical Studies of the Ministry of Health of Russian Federation, Penza, Russia.

Methods:

The CTR model (RF Patent 2388432) by 'Reper-NN Ltd.' (Russia) has fixing elements on its internal surface as three flexible indentions with clearances which different IOLs haptics fixed between. CTR and IOL implantation was performed on 13 eyes of 13 patients with in supplementary optic reconstructive surgery. All operations were performed in a period of from1 month to 20 years after initial surgery. IOLs with plate haptic (RSP-1 - 10 eyes), close (Т-26 - 2 eyes) and open haptic (Appalens-209 - 1 eye) were used. 7 eyes has aphakia after complicated PHACO, there plate-haptic IOLs RSP-1 were implanted through corneal incision of 2.75 mm. Dislocated lenses explantation with following reimplantation of the same lenses through corneal incision of 6.0 - 7.0 mm was performed on 6 eyes. Additional surgery elements such as vitreoectomy and synechiotomy were performed by indications. CTR was implanted in ciliary sulcus with additional iris-fixation in some cases in the beginning, and then IOLs haptics were placed in the fixing elements. CTR and plate-haptic IOL fixed in it were implanted as a single block in 3 cases. For the control of postoperative IOL and the ring position UBM was used. Follow-up was up 1.5 to 4.5 years.

Results:

All implantations were no complicated, managed to fix the various IOLs haptic. IOLs haptics in all cases remained reliably fixed in CTR fixing ele-ments. Implants position remained stable for the whole period of follow-up according to UBM data despite capsular support default. Decentration of implants and pseudophakodonesis were absent. In one case of IOL with open haptic (Appalens) CTR used as a support, in other cases fixation of IOL haptic in CTR fixing elements was succeed. Visual acuity with correction was 0.72 ± 0.16 in a month after surgery and consistent with retinal visual acuity. IOP was normal in all cases.

Conclusions:

The study has shown a possibility, simplicity and safety of CTR and IOLs out-capsule implantation, including microinvasive surgery. The proposed CTR model with IOL fixation elements showed its effectiveness, safety, reliability in the cases of default of capsular support for up to 4.5 years of follow-up. Fixing elements of the ring provides a releasable connection of CTR and IOL haptics and allows to use it with different IOLs models. Clinical studies substantiate the usefulness of CTR in the optic reconstructive surgery as support for secure fixation of various types of posterior chamber IOL. FINANCIAL INTEREST: NONE

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