Effect of a capsular tension ring on axial intraocular lens position

Weber, Maria; Hirnschall, Nino; Rigal, K.; Findl, Oliver

doi:10.1016/j.jcrs.2014.04.035

Cited by 13 publications

(8 citation statements)

References 9 publications

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“…To the authors’ knowledge, very few study findings on the subject matter have been published to date; previous publications were either case histories [17], [18], focussed on the axial lens position [19] or examined a cohort of patients with pre-existing high myopia [12]. Recently published results from a prospective randomized clinical trial performed in a tertiary care centre in India with a case number of 50 eyes (Auroflex Toric IOL) reported a statistically significant difference in mean rotation at 3 months in favour for the group with CTR (group with CTR: 1.85 ± 1.72°; group without CTR: 4.02 ± 2.04°) [20].…”

Section: Discussionmentioning

confidence: 99%

Rotation of a toric intraocular lens with and without capsular tension ring: data from a multicenter non-inferiority randomized clinical trial (RCT)

Hahn,

Krummenauer,

Schmickler

et al. 2019

BMC Ophthalmol

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Background Evaluation of clinical outcome in cohorts with versus without simultaneous implantation of a capsular tension ring (CTR) and a toric lens (Tecnis Toric). Main parameter was rotation referring - in contrast to misalignment - to the IOL axis change from immediately after implantation to the final postoperative position. Methods Lens position was measured at baseline with the patient still in recumbent position, postoperative rotation was calculated by software. Postoperative evaluation included measurement three months after surgery or prior to an indicated revision surgery. Explorative re-evaluation of the underlying RCT’s intent-to-treat population was performed for the entire sample and stratified for cohorts by 95% confidence intervals for binary endpoints’ incidences (primary endpoint: absolute postoperative rotation ≤5 degrees; secondary endpoints: absolute deviation between achieved cylinder and target cylinder ≤0.5 dpt, postoperative corrected distance visual acuity (CDVA) ≥ 0.8). Data exploration was based on medians and quartiles. Setting Outpatient study sites. Design Re-evaluation based on data from a multicenter non-inferiority randomized clinical trial (RCT). Results Sub cohorts (without CTR 89, with CTR 90 patients) did not present clinically relevant differences in preoperative characteristics: revision surgery was performed in 7 cases (3 without and 4 with CTR). Primary endpoint incidences for the total sample, without and with CTR were 90%/89%/90%; cylinder endpoint incidences were 46%/45%/46% and CDVA endpoint incidences 90%/92%/88%. Median absolute rotations were 1.74°/1.79°/1.72°, median absolute cylinder deviations 0.55/0.52/0.55 dpt and median visual acuity 1.0/1.0/1.0. Conclusion No clinically relevant differences between CTR subgroups were found; a satisfying three months rotational stability was achieved. Trial registration The trial was registered retrospectively in the trial registry DRKS, trial registration number DRKS00015316 , date of registration 27. August 2018.

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Section: Discussionmentioning

confidence: 99%

Rotation of a toric intraocular lens with and without capsular tension ring: data from a multicenter non-inferiority randomized clinical trial (RCT)

Hahn,

Krummenauer,

Schmickler

et al. 2019

BMC Ophthalmol

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“…They measured a mean postoperative ACD of 4.14 mm in eyes with mean AL of 23.37 mm twelve months after surgery with Scheimpflug camera, not including the corneal thickness. In another paper, Weber et al [ 20 ] found that the mean postoperative ACD value of the same IOL was 4.81 mm. In our study, the mean ACD value was 4.75 ± 0.26 mm at month 12 and did not significantly change after the first postoperative month.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, the IOL calculation was performed with two different platforms, which is a limitation by the comparison. Nevertheless, according to a recent study of Weber et al [ 20 ], the optimized A constant of the Tecnis IOL was the same as the one given in the ULIB database.…”

Section: Discussionmentioning

confidence: 99%

Comparison of Two Toric IOLs with Different Haptic Design: Optical Quality after 1 Year

Miháltz

Lasta

Burgmüller

et al. 2018

Journal of Ophthalmology

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Background The purpose of this prospective, randomised study was to interocularly compare the visual performance after implantation of two different toric IOLs with different haptic design. Methods 59 subjects with corneal astigmatism greater than 1.25 diopter (D) were implanted with an AT TORBI 709M IOL (Carl Zeiss Meditec AG) in one eye and with a Tecnis toric aspheric IOL (Abbot Medical Optics) in the other eye. Observation procedure was performed 12 months postoperatively. Main outcome measures included uncorrected distance visual acuity (UDVA), manifest refraction, IOL rotation, and IOL position. Results Mean UCDVA was 0.04 ± 0.14 logMAR for AT TORBI eyes and 0.06 ± 0.15 logMAR for Tecnis eyes (p = 0.3). The postoperative spherical equivalent values were significantly lower in the AT TORBI group. Mean toric IOL axis rotation was 3.0 ± 2.26 degrees for AT TORBI eyes and 3.27 ± 2.37 for Tecnis eyes (p = 0.5). The mean vertical IOL tilt and vertical decentration values measured with the Visante OCT were significantly larger in the AT TORBI group (p < 0.05). Conclusions Both the Tecnis and the AT TORBI toric IOLs successfully reduced ocular astigmatism. Emmetropia could be better achieved with the AT TORBI IOL, whereas the Tecnis showed better positional stability. This trial is registered with ICMJE NCT03371576.

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“…16 Nevertheless, there is a randomized controlled trial that shows CTR did not influence the postoperative ACD. 17…”

Section: Discussionmentioning

confidence: 99%

Effect of capsular tension ring implantation during phacoemulsification on postoperative refraction

Belov¹,

Nikolaenko

Потемкин

2021

European Journal of Ophthalmology

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Purpose To assess refractive outcomes of phacoemulsification (PE) with additional capsular tension ring (CTR) implantation. Material and methods In total, 37 eyes of 37 patient who underwent PE with intraocular lens (IOL) implantation were divided into 2 groups: study group (n = 18) with CTR co-implantation (inclusion criteria was preoperative irido-phacodonesis) and control group (n = 19) without CTR. Optical biometry (IOL-Master 500) was performed for each patient before PE. Barrett Universal II Formula was used for IOL calculation. IOL power calculation error was assessed by comparing target refraction and final refraction measured by Topcon-8800 autorefractometer 1 month after surgery. Results Despite almost identical preoperative values in both groups refractive result was different. Patients with CTR co-implantation had more hyperopic IOL power calculation error of 0.41 ± 0.52 D versus 0.04 ± 0.59 D in the control group (p = 0.043). Postoperative spherical equivalent in study group was more hyperopic (−0.40 ± 1.47 D) than in control group (−0.77 ± 1.24), nevertheless, this difference was insignificant ( p = 0.166). Conclusion CTR co-implantation in patients with weak zonules and preoperative irido-phacodonesis leads to more hyperopic IOL power calculation error compared with control group.

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Effect of a capsular tension ring on axial intraocular lens position

Abstract: No author has a financial or proprietary interest in any material or method mentioned.

Cited by 13 publications

References 9 publications

Rotation of a toric intraocular lens with and without capsular tension ring: data from a multicenter non-inferiority randomized clinical trial (RCT)

Rotation of a toric intraocular lens with and without capsular tension ring: data from a multicenter non-inferiority randomized clinical trial (RCT)

Comparison of Two Toric IOLs with Different Haptic Design: Optical Quality after 1 Year

Effect of capsular tension ring implantation during phacoemulsification on postoperative refraction

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