May 2006
Volume 47, Issue 13
ARVO Annual Meeting Abstract  |   May 2006
Capsular Tension Rings: A Useful Tool for Successful Completion of Cataract Surgery With Zinn’s Zonule Instability. Five Years Experience
Author Affiliations & Notes
  • M. Kotoula
    Ophthalmology, Univ, Larissa, Greece
  • C.H. Karabatsas
    Ophthalmology, Univ, Larissa, Greece
  • A. Katsanos
    Ophthalmology, Univ, Larissa, Greece
  • E. Tsironi
    Ophthalmology, Univ, Larissa, Greece
  • E. Kotsimpou
    Ophthalmology, Univ, Larissa, Greece
  • C.Z. Dimitrios
    Ophthalmology, Univ, Larissa, Greece
  • Footnotes
    Commercial Relationships  M. Kotoula, None; C.H. Karabatsas, None; A. Katsanos, None; E. Tsironi, None; E. Kotsimpou, None; C.Z. Dimitrios, None.
  • Footnotes
    Support  None
Investigative Ophthalmology & Visual Science May 2006, Vol.47, 659. doi:
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      M. Kotoula, C.H. Karabatsas, A. Katsanos, E. Tsironi, E. Kotsimpou, C.Z. Dimitrios; Capsular Tension Rings: A Useful Tool for Successful Completion of Cataract Surgery With Zinn’s Zonule Instability. Five Years Experience . Invest. Ophthalmol. Vis. Sci. 2006;47(13):659.

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      © ARVO (1962-2015); The Authors (2016-present)

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Purpose: : To study the intraoperative and postoperative efficacy of the use of capsular tension rings (CTR) in cataract surgery complicated by Zinn zonule instability.

Methods: : Retrospective chart review of 47 eyes from 46 patients who underwent cataract surgery from May 2001 to November 2005 in the Ophthalmology Department, University of Thessaly, Larissa, Greece.

Results: : Of the capsular tension rings used, 39 were Alcon ReformTM, 1 was MorcherTM and 7 were RaynerTM . The decision of CTR use was taken preoperatively in 16 cases (34%) due to post–traumatic cataract (4 eyes, 8.5%), phacodonesis (6 eyes, 12.8%), pseudoexfoliation (5 eyes, 10.6%) or high myopia (1 eye, 2.2%). Perioperative decision of CTR use was taken in 31 eyes (66%), in the majority of cases due to instability during capsulorrhexis (25 eyes, 53.2%), whereas in 17 eyes (36.2%) the CTR was inserted after phaco was initiated. Phaco with PC–IOL was successfully completed in 36 cases (76.6%). Two eyes (4.2%) received an AC–IOL after phaco. Of the remaining 9 cases (19.1%), 3 were planned ECCE, while the operation was converted to an ECCE in 5 eyes (10.6%) despite the use of CTR. Only in one eye (2.1%) the CTR had to be removed together with the capsular bag (intracapsular extraction). Average follow–up time was 6.3 months (SD: 5.8). Best corrected Snellen visual acuity at last follow–up visit was ≤0.3 in 5 eyes (10.6%), 0.31–0.69 in 8 eyes (17%) and ≥0.7 in 28 eyes (59.6%). IOL decentration was observed postoperatively in 3 cases (6.4%), whereas posterior capsule opacification was seen in 2 cases (4.25%) at last follow–up visit.

Conclusions: : Capsular tension rings appear effective in cataract surgery in the case of compromised zonular integrity. Postoperative results were encouraging in our series.

Keywords: cataract • intraocular lens 

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