scholarly journals Management of crystalline lens dislocation into the anterior chamber in a victim of domestic violence

2011 ◽  
Vol 95 (1) ◽  
pp. 113-115
Author(s):  
Ilias Georgalas ◽  
Ioannis Ladas ◽  
Dimitris Papacostantinou ◽  
Sergios Taliatzis ◽  
Chryssanthi Koutsandrea
Keyword(s):  
Domestic Violence ◽  
Anterior Chamber ◽  
Crystalline Lens ◽  
Lens Dislocation

scholarly journals Use of the chop hook to stabilize the capsular bag in patients with crystalline lens dislocations and cataracts

2017 ◽  
Vol 45 (2) ◽  
pp. 849-855
Author(s):  
Yanfeng Zeng ◽  
Licheng Fan ◽  
Peirong Lu
Keyword(s):  
Visual Acuity ◽  
Cataract Surgery ◽  
Anterior Chamber ◽  
Crystalline Lens ◽  
Cataract Operation ◽  
Intraocular Lens Implantation ◽  
Lens Dislocation ◽  
Lens Implantation ◽  
Capsular Bag

Objective To observe the treatment effects of chop hook-assisted phacoemulsification surgery in patients with crystalline lens dislocation. Methods Thirty-seven eyes with cataracts and crystalline lens dislocations underwent cataract surgery. An L-shaped chop hook was introduced into the anterior chamber, and the tip was pushed or pulled to the centre of the anterior capsular edge of the zonular dialysis during the cataract operation. Postoperative follow-up was conducted for ≥ 1 month. Results All patients’ postoperative visual abilities improved except one patient with glaucoma. One patient who underwent −5D intraocular lens implantation exhibited vision of 1/50. Visual acuity was less than 6/20 in 6 eyes, 6/20 to 10/20 in 7 eyes, and greater than 10/20 in 22 eyes. Conclusions L-shaped chop hooks can be used to push or pull the anterior capsular edge of the zonular dialysis for protection and avoidance of further zonular damage. This strategy provides satisfactory effects and reduces use of additional instruments.

scholarly journals Bilateral spontaneous crystalline lens dislocation to the anterior chamber: A case report

2013 ◽  
Vol 141 (11-12) ◽  
pp. 800-802 ◽  
Author(s):  
Milos Jovanovic
Keyword(s):  
Intraocular Pressure ◽  
Case Report ◽  
Anterior Chamber ◽  
Crystalline Lens ◽  
Time Intervals ◽  
Lens Dislocation ◽  
Elevated Intraocular Pressure ◽  
History Of ◽  
Sudden Decrease ◽  
The Right

Introduction. There are various reasons for the lens dislocation. Spontaneous dislocation of a clear lens is extremely rare, especially its dislocation to the anterior chamber. Case Outline. The author presents a case of spontaneous clear lens dislocation to the anterior chamber in both eyes in a patient without the history of any trauma. Dislocation occurred spontaneously, first in the left eye, along with a sudden decrease of vision. The ophthalmologist found a clear lens in the anterior chamber, without any sign of an elevated intraocular pressure, as should have been expected. The dislocated lens was removed surgically (intracapsular extraction) with the preventive basal iridectomy. Two years later, the same happened in the right eye: clear lens moved spontaneously to the anterior chamber, with a decrease of vision, but again without any rise of intraocular pressure and/or any pain. Intracapsular extraction of the lens with basal iridectomy was done again. Conclusion. The presented case demonstrates that spontaneous dislocation of the transparent lens to the eye anterior chamber can occur in both eyes at different time intervals. We suggest the removal of dislocated lens in the anterior chamber by the intracapsular extraction.

Effect of a Suction Device for Femtosecond Laser on Anterior Chamber Depth and Crystalline Lens Position Measured by OCT

2009 ◽  
Vol 25 (11) ◽  
pp. 1005-1011 ◽  
Author(s):  
Kathleen S. Kunert ◽  
Marcus Blum ◽  
Matthias Reich ◽  
Manfred Dick ◽  
Christoph Russmann
Keyword(s):  
Femtosecond Laser ◽  
Anterior Chamber ◽  
Anterior Chamber Depth ◽  
Crystalline Lens ◽  
Suction Device ◽  
Lens Position

scholarly journals Pars Plana Vitrectomy and the Risk of Ocular Hypertension and Glaucoma: Where Are We?

2020 ◽  
Vol 9 (12) ◽  
pp. 3994
Author(s):  
Tommaso Rossi ◽  
Guido Ripandelli
Keyword(s):  
Anterior Chamber ◽  
Ocular Hypertension ◽  
Oxygen Tension ◽  
Pars Plana Vitrectomy ◽  
Open Angle Glaucoma ◽  
Crystalline Lens ◽  
Cataract Extraction ◽  
Oxygen Scavenger ◽  
Clinical Series ◽  
Pars Plana

Purpose is to review the pathogenic mechanism for ocular hypertension and glaucoma development after pars plana vitrectomy. Both acute and chronic causes are considered, and special attention is paid to the theories and clinical evidence on the risk of developing Open Angle Glaucoma (OAG) after Pars Plana Vitrectomy (PPV). Most existing scientific literature on the issue agree on the role of ascorbate as an oxygen scavenger within the vitreous chamber. Oxygen tension in the vitreous and anterior chamber is maximum inn proximity of the retinal surface and endothelium, respectively and steeply decreases toward the lens, on both sides, and trabecular meshwork. Vitreous removal and, to a lesser extent, liquefaction, greatly reduces oxygen tension gradient in vitreous chamber while cataract extraction has similar effects on anterior chamber oxygen gradients. Oxygen derivatives originated from the cornea and retina are actively reduced by the vitreous gel and/or the crystalline lens. Vitreous removal and cataract extraction reduce drastically this function. Most reported clinical series confirm this hypothesis although protocol difference and follow-up length greatly impact the reliability of results.

scholarly journals Repeatability and reproducibility of axial length, anterior chamber depth and crystalline lens thickness measurements using the Nidek US-500 Echoscan

2015 ◽  
Vol 74 (1) ◽  
Author(s):  
Khathutshelo P. Mashige
Keyword(s):  
Anterior Chamber ◽  
Axial Length ◽  
Repeated Measures ◽  
Anterior Chamber Depth ◽  
Correlation Coefficients ◽  
Crystalline Lens ◽  
Angle Closure ◽  
Lens Thickness ◽  
Primary Angle Closure Glaucoma ◽  
The Right

Aim: The reliability of an instrument used to collect data for clinical and research purposes is greatly important, especially when it is used to determine changes in measured ocular parameters over time. The purpose of this study was to determine the intra-session repeatability and inter-session reproducibility of axial length (AL), anterior chamber depth (ACD) and crystalline lens thickness (LT) measurements using the Nidek US-500 Echoscan.Method: Fifty successive automatic measurements of the above parameters were taken on the right eyes only of 12 healthy subjects aged 23–44 years old, followed by similar repeated measures after 1 week. Sample standard deviations (s.d.), precision (P) and coefficient of repeatability (COR) were calculated to determine intra-session repeatability. Coefficient of reproducibility (CRP), Bland and Altman plots, concordance correlation coefficients (CCC) and paired t-tests that compared measurements obtained in the first and second sessions, were used to determine inter-session reproducibility.Results: Both the intra-session repeatability and inter-session reproducibility were within acceptable limits for the three variables assessed.Conclusion: The study showed that the Nidek US-500 Echoscan provides accurate, repeatable and reproducible measurements of AL, ACD and LT in healthy eyes. This finding will be of interest to optometrists and ophthalmologists who measure these parameters when diagnosing, managing and investigating conditions such as primary angle-closure glaucoma and keratoconus.

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