Nuclear scaffold: Three-dimensional indigenous capsular bag support combined with IOL scaffold and capsular tension ring to prevent posterior capsule rupture in zonulopathy

Parkash, Rohit Om; Mahajan, Shruti; Parkash, Tushya Om; Parkash, Tushar Om; Rai, Milan

doi:10.1016/j.jcrs.2019.08.046

Cited by 8 publications

(7 citation statements)

References 13 publications

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“…The CTR is generally inserted from the area of intact to non‐intact zonules. If CTR is delayed until the nucleus has been removed, loss of the scaffolding effect of the nucleus results in collapse of the bag, with a higher risk of inadvertent aspiration of the bag, PCR and vitreous loss 40 . CTR insertion can be facilitated by the creation of a potential space between the anterior capsule and the lens cortex using viscodissection before phaco‐emulsification.…”

Section: Capsular Support Devicesmentioning

confidence: 99%

Management of the subluxated crystalline lens: A review

Chan

2021

Clinical Exper Ophthalmology

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Cataract surgery for the subluxated crystalline lens is challenging. A thorough preoperative evaluation is important to determine the appropriate surgical approach for lens removal and the subsequent technique of intraocular lens placement. Important considerations include the extent and location of zonular weakness, and whether the zonular deficiency is caused by a static or progressive disease. The capsular bag should be preserved where possible. Creating a good‐sized and centred continuous curvilinear capsulorhexis is crucial to facilitate the use of capsular retractors and capsular tension devices, which provide capsular stability. Nucleus sculpting and rotation should be minimised to reduce zonular stress. Being cognisant of the possible intraoperative complications that may occur at each stage of the surgery and knowing how to reduce the risk of these complications occurring will enable surgeons to perform safe cataract surgery in these complex cases.

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Section: Capsular Support Devicesmentioning

confidence: 99%

Management of the subluxated crystalline lens: A review

Chan

2021

Clinical Exper Ophthalmology

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“…Рутинная хирургия катаракты нередко осложняется подвывихом хрусталика вследствие слабости цинновых связок [1,2]. Имплантация капсульного кольца (КК) помогает стабилизировать капсульный мешок и избежать таких осложнений, как разрыв задней капсулы хрусталика (РЗК), возникновение зонулодиализа и выхода волокон стекловидного тела в переднюю камеру [3,4]. Применение данной техники стало возможным с появлением первой модели КК в 1991 г., разработанной Hara и соавт.…”

Section: Introductionunclassified

Effect of Capsular Tension Ring Implantation during Phacoemulsification on Postoperative Refraction

Belov¹,

Nikolaenko

2022

Oftalʹmologiâ

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Purpose. To assess refractive result of phacoemulsification (PE) with capsular tension ring (CTR) implantation.Patients and methods. In total, 37 eyes of 37 patients who underwent PE with intraocular lens (IOL) implantation were divided into 2 groups: study group (n = 18) with CTR implantation 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 implantation had more hyperopic IOL power calculation error of +0.41 ± 0.52 D versus — 0.02 ± 0.54 D in the control group (p = 0.037). Refractive result in control group was more predictable (mean absolute error was 0.55 ± 0.34 D and 0.41 ± 0.30 D for groups respectively, p = 0.180).Conclusion. CTR implantation could help surgeon to perform PE in complicated cases. Nevertheless, CTR implantation could leads to hyperopic shift. To avoid refractive errors optimized A-constants could be used (118.85 for AcrySof SA60AT and 118.47 for Akreos Adapt AO).

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Section: Introductionmentioning

confidence: 99%

“…1,2 However, implantation of capsular tension ring (CTR), could prevent undesirable complications such as posterior capsular rupture (PCR), zonulodialysis and vitreous loss during phacoemulsification (PE). 3,4 Requirements for PE outcomes are growing: in 2009 benchmark of intraocular lens (IOL) power calculation error of ±1.0D was allowed in 85% of cases, 5 in 2018 this mark increased upto 97%. 6 First model of silicone CTR was suggested by Hara in 1991.…”

Section: Introductionmentioning

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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Nuclear scaffold: Three-dimensional indigenous capsular bag support combined with IOL scaffold and capsular tension ring to prevent posterior capsule rupture in zonulopathy

Cited by 8 publications

References 13 publications

Management of the subluxated crystalline lens: A review

Management of the subluxated crystalline lens: A review

Effect of Capsular Tension Ring Implantation during Phacoemulsification on Postoperative Refraction

Effect of capsular tension ring implantation during phacoemulsification on postoperative refraction

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