UBM indicators in anterior capsular contraction syndrome

2021 ◽  
pp. 41-43
Author(s):  
A.A. Gamidov ◽  
◽  
E.A. Averkina ◽  
D.V. Andgelova ◽  
Z.V. Surnina ◽  
...  
Keyword(s):  
Ciliary Body ◽  
Assessment Method ◽  
Posterior Pole ◽  
The State ◽  
Capsular Contraction ◽  
Anterior Capsule ◽  
Effective Assessment ◽  
Anterior Capsulotomy ◽  
Capsular Bag ◽  
Ultrasound Biomicroscope

The article presents the results of UBM studies of patients with anterior capsular contraction syndrome (CS). Purpose. Тo use the UBM method to study the state of the ciliary body (CB) and the capsular bag of the lens in patients with CS. Material and methods. The study included 42 patients with capsular CS. The UBM HI-scan ultrasound biomicroscope (Optikon, Italy) was used. Results. The reduction of the capsule bag of the lens was accompanied by a significant decrease in the diameter of the anterior capsulotomy opening, IOL decentration and its displacement towards the posterior pole of the eye, stretching or damage to the zonula ciliaris, and an increase in the CB thickness. In 2 cases, ruptures of the CB and its separation from the place of attachment to the radix iridis were recorded. Conclusion. UBM is an effective assessment method for CS, which allows us to study the state of the capsule bag of the lens and CB, evaluate the effectiveness of laser treatment and predict the risks associated with a high probability of complications. Key words: capsular contraction syndrome, anterior capsule, lens, laser, UBM, ciliary body.

Assessment of Timber Structures Using the X-Ray Technology

2013 ◽  
Vol 778 ◽  
pp. 321-327 ◽  
Author(s):  
Steffen Franke ◽  
Bettina Franke ◽  
Florian Scharmacher
Keyword(s):  
Assessment Method ◽  
Normal Function ◽  
Structural Timber ◽  
Timber Structures ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
X Ray ◽  
Existing Structures ◽  
Effective Assessment ◽  
Non Destructive

The assessment of timber structures is a permanent task to check the normal function of individual structural timber elements. Non-destructive testing methods are preferred but the value of the information is limited due to the performance of the applied assessment method. However, X-ray is a technology which allows a view into the structural member or the connections. The mobile X-ray technology has been used in laboratory tests and practical situations at existing structures and led to excellent results which allowed detailed analyses. The method and its possibilities for non-destructive testing of timber structures will be presented. The results reached show a high potential for an effective assessment of existing structures including connections and structural timber members.

scholarly journals Anterior Capsule Opening Contraction and Late Intraocular Lens Dislocation after Cataract Surgery in Patients with Weak or Partially Absent Zonular Support

Medicina ◽  
2021 ◽  
Vol 57 (1) ◽  
pp. 35
Author(s):  
Juris Vanags ◽  
Renārs Erts ◽  
Guna Laganovska
Keyword(s):  
Cataract Surgery ◽  
Intraocular Lens ◽  
Yttrium Aluminum Garnet ◽  
Late Complications ◽  
High Rate ◽  
Anterior Capsule ◽  
Capsular Tension Ring ◽  
Hydrophobic Acrylic ◽  
Capsular Bag

Background and objectives: To evaluate anterior capsule opening (ACO) contraction and late intraocular lens (IOL) dislocation after cataract surgery in patients with weak or partially absent zonular support and assess methods of reducing these complications. Materials and methods: For this prospective study, we enlisted cataract surgery patients in our hospital with preoperative diagnoses of weak zonules. All patients received phacoemulsification surgery with implantation of a hydrophobic acrylic IOL and capsular tension ring (CTR). ACO reductions were measured for six months after enrolment. Data on late IOL dislocations were collected five years after enrolment of the last patient. Results: Fifty-three patients were enrolled from 2011 to 2015. Over the six-month active follow-up period, ACO area reduction was 23% in patients receiving CTRs of 11 mm diameter and 8% for patients with CTRs of 12 mm, with an overall mean of 15% reduction. Five years after the last patient was enrolled, seven patients (13%) had experienced late IOL-CTR-capsular bag dislocation. For these patients, the mean ACO reduction in the first six months of follow-up was 33%, including for those who had received neodymium-doped yttrium aluminum garnet (Nd: YAG) anterior capsulotomies. Conclusion: Use of hydrophobic acrylic lenses and CTR reduces ACO contraction, with rates comparable to those after cataract surgery without ocular comorbidity. Our patients experienced a relatively high rate of late IOL-CTR-capsular bag dislocation. However, dislocated complexes were easily repositioned and few patients required IOL exchange. Frequent visits are warranted to promptly detect late complications of cataract surgery in patients with weak zonular support.

scholarly journals Rapid Assessment Method of Flood Damage Using Spatial-Statistical Models

2016 ◽  
Vol 8 (4) ◽  
pp. 46
Author(s):  
Abdul Hamid Mar Iman ◽  
Edlic Sathiamurthy
Keyword(s):  
Natural Disaster ◽  
Damage Assessment ◽  
Flood Hazard ◽  
Rapid Assessment ◽  
Assessment Method ◽  
Flood Damage ◽  
The State ◽  
Property Damage ◽  
Rapid Assessment Method ◽  
Spatial Approach

Attention to damage assessment is always a priority especially in cases of natural disaster. The state of Kelantan is known to be one of a few Malaysian states with noticeable natural disaster, in particular, flood. In December 2014, an extraordinary magnitude of flood – nicknamed as yellow flood – struck the state causing hundreds of million ringgit of damage to properties. The purpose of this study is to demonstrate a spatial approach to estimating property damage incurred by flood. By selecting a badly affected area, GIS was used to map geo-referenced flood-hit location in Kuala Krai, Kelantan. Flood hazard was modelled and superimposed on estimated property damage. GIS spatial technique was then employed to estimate the flood damage incurred. This study, however, did not make a complete damage assessment of the properties but rather focusing on the methodology of damage assessment to show how it can be implemented. In conclusion, GIS spatial technique can generally be used to provide flood damage rapid assessment method.

Circular YAG laser anterior capsulotomy for anterior capsule contraction syndrome

2019 ◽  
Vol 39 (11) ◽  
pp. 2497-2503 ◽  
Author(s):  
Mohamed Nagy Elmohamady ◽  
Ashraf Elhabbak ◽  
Elham Abdelazim Gad
Keyword(s):  
Anterior Capsule ◽  
Yag Laser ◽  
Anterior Capsulotomy

scholarly journals A Modified Femtosecond Laser Technique for Anterior Capsule Contraction Syndrome

2020 ◽  
Vol 2020 ◽  
pp. 1-5
Author(s):  
Marco Marenco ◽  
Pietro Mangiantini ◽  
Luca Scuderi ◽  
Alessandro Lambiase ◽  
Marta Sacchetti
Keyword(s):  
Visual Acuity ◽  
Surgical Technique ◽  
Femtosecond Laser ◽  
Late Complication ◽  
Complete Removal ◽  
Laser Technique ◽  
Anterior Capsule ◽  
Anterior Capsulotomy ◽  
New Surgical Technique ◽  
Ophthalmic Viscosurgical Device

Anterior capsule contraction syndrome (ACCS) is a rare, late complication of cataract surgery, associated with impairment of visual function. In this paper, we describe a new surgical technique to treat ACCS by femtosecond laser procedure. The femtosecond laser was used to perform an anterior capsulotomy with a customized size, in order to avoid IOL damage. After ophthalmic viscosurgical device injection in the anterior chamber, the anterior capsule flap was separated from the IOL surface by gentle hydrodissection. This manoeuvre enabled an easy and safe removal of the fibrotic material by vitreal microscissors. Our technique allowed a complete removal of the fibrotic material and opening of the capsule, with immediate complete visual acuity recovery without IOL damage. In conclusion, femtosecond laser appears to be safe and effective for treatment of ACCS with long-lasting efficacy.

A novel morphological classification for the femoral notch based on MRI: a simple and effective assessment method for the femoral notch

2019 ◽  
Vol 49 (1) ◽  
pp. 75-83 ◽  
Author(s):  
Chengyuan Zhang ◽  
Guoming Xie ◽  
Shikui Dong ◽  
Chang’an Chen ◽  
Xiaochun Peng ◽  
...  
Keyword(s):  
Assessment Method ◽  
Morphological Classification ◽  
Effective Assessment ◽  
Femoral Notch

scholarly journals Epidemiology, Etiology, and Prevention of Late IOL-Capsular Bag Complex Dislocation: Review of the Literature

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Francisco J. Ascaso ◽  
Valentín Huerva ◽  
Andrzej Grzybowski
Keyword(s):  
Cumulative Risk ◽  
Vitreoretinal Surgery ◽  
Cataract Extraction ◽  
Acute Angle ◽  
Angle Closure ◽  
Posterior Chamber ◽  
Capsular Contraction ◽  
Associated Conditions ◽  
Capsular Bag ◽  
Iol Dislocation

Posterior chamber intraocular lens (PC-IOL) subluxation is uncommon but represents one of the most serious complications following phacoemulsification. Late spontaneous IOL-capsular bag complex dislocation is defined as occurring three months or later following cataract surgery. Unlike early IOL dislocation, late spontaneous IOL dislocation is due to a progressive zonular dehiscence and contraction of the capsular bag many years what seemed to be uneventful surgery. In recent years, late in-the-bag IOL subluxation or dislocation has been reported with increasing frequency, having a cumulative risk of IOL dislocation following cataract extraction of 0.1% after 10 years and 1.7% after 25 years. A predisposition to zonular insufficiency and capsular contraction is identified in 90% of reviewed cases. Multiple conditions likely play a role in contributing to this zonular weakness and capsular contraction. Pseudoexfoliation is the most common risk factor, accounting for more than 50% of cases. Other associated conditions predisposing to zonular dehiscence are aging, high myopia, uveitis, trauma, previous vitreoretinal surgery, retinitis pigmentosa, diabetes mellitus, atopic dermatitis, previous acute angle-closure glaucoma attack, and connective tissue disorders. The recognition of these predisposing factors suggests a modified approach in cases at risk. We review certain measures to prevent IOL-bag complex luxation that have been proposed.

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