Trabeculectomy According to Cairns Combined with Extracapsular Lens Extraction and Intraocular Lens Implant in the Posterior Chamber

1987 ◽  
Vol 194 (1) ◽  
pp. 12-18 ◽  
Author(s):  
A. Sammartino
Keyword(s):  
Intraocular Lens ◽  
Posterior Chamber ◽  
Lens Extraction

scholarly journals Time Course of Lens Epithelial Cell Behavior in Rabbit Eyes following Lens Extraction and Implantation of Intraocular Lens

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Daijiro Kurosaka ◽  
Toshiyasu Imaizumi ◽  
Junya Kizawa
Keyword(s):  
Intraocular Lens ◽  
Time Course ◽  
Smooth Muscle Actin ◽  
Posterior Capsule ◽  
Posterior Chamber ◽  
Lens Fiber ◽  
Lens Extraction ◽  
Fiber Cells ◽  
Soemmering Ring

Background. After cataract surgery, some lens epithelial cells (LECs) transdifferentiate into myofibroblast-like cells, which causes fibric posterior capsule opacification (PCO). Residual LECs differentiate into lens fiber cells, forming Elschnig pearls with PCO. This study was carried out to identify the time course of both types of LEC behavior in rabbit eyes following lens extraction and implantation of an intraocular lens (IOL). Methods. Phacoemulsification and implantation of posterior chamber IOLs were performed in rabbit eyes. Following enucleation, immunohistochemical methods were used to detect α-smooth muscle actin (α-SMA), a marker for myofibroblast-like cells, in the pseudophakic rabbit eyes. A mouse monoclonal antibody against α-SMA was used. Results. Soon after the operation, the LECs migrated and covered the lens capsule. Thereafter, the LECs around the anterior capsular margin were always positive for α-SMA. However, the distributions of these cells were not consistent. In some specimens, α-SMA-positive LECs were present around the IOL optic early after surgery, but most of them had disappeared several weeks after the surgery. The residual cells induced fibrotic PCO. In the other specimens, most LECs around the IOL optic except the anterior capsular margin were negative for α-SMA. In the peripheral region covered by the peripheral anterior and posterior capsules, LECs on the posterior capsule always differentiated into lens fiber cells and formed a Soemmering ring. Thereafter, migration of lens fiber cells from the Soemmering ring and differentiation of LECs in situ on the central posterior capsule consisted of Elschnig pearls type of PCO. Conclusions. Although postoperative LEC behavior is not consistent, residual α-SMA-positive LECs induced fibrotic PCO. The lens fiber cells that migrated from the peripheral capsular bag or that were differentiated in situ covered the central posterior capsule, forming Elschnig pearls with PCO.

Update on Paediatric Refractive Surgery

2015 ◽  
Vol 09 (02) ◽  
pp. 104
Author(s):  
Amir Pirouzian ◽  
◽  
◽  
◽  
Hesam Hashemian ◽  
...  
Keyword(s):  
Intraocular Lens ◽  
Refractive Surgery ◽  
Case Reports ◽  
Age Groups ◽  
Cross Linking ◽  
Posterior Chamber ◽  
Original Research ◽  
Phakic Intraocular Lens ◽  
Lens Extraction ◽  
Accommodative Esotropia

Purpose:To provide a summary of the most recent evidence-based data on the paediatric refractive surgery.Methods:A review of the published studies from 1990 to 2015 was undertaken with emphasis on recent articles from 2010 to 2015.Results:Searching Scopus and PubMed, using the keywords of refractive surgery, phakic, paediatric, IOL, children and amblyopia alone or in various combinations yielded a total of about 48 articles on this topic from 1990 to 2015. Excluding review articles, fewer than 35 articles were included. Original research articles were only in the form of case reports/series on corneal laser surgery and phakic intraocular lens implantation or clear lens extraction. A total of fewer than 800 patients and 700 eyes had undergone a form of refractive surgery listed above. No randomised clinical trial (RCT) study was available on the topic. Age varied from 7 months to 17 years for non-corneal cross-linking studies. Most commonly performed operations were corneal laser ablative procedures (photorefractive keratectomy [PRK], laser-assisted sub-epithelial keratectomy [LASEK], laser-assistedin situkeratomileusis [LASIK]), phakic intraocular lens implantations (p-IOL, anterior or posterior chamber) and clear lens extraction. The indications for surgical intervention were for refractive – high amplitude iso-ametropic or anisometropic – amblyopia in the setting of the previously failed medical interventions and spectacle intolerance or non-compliance (physical or neurobehavioral in nature) and high accommodative esotropia with/without amblyopia. The main objective of the studies was to assess for visual acuity gained or lost following surgery and for correction of strabismus, i.e. achieving orthophoria. Further search on the keywords ‘cross-linking, cornea, rings and children’ from the same databases resulted in 130 articles. No RCT study was available on the topic. Age varied from 7 months to 17 years for non-corneal cross-linking studies. The focus of the most recent refractive surgery articles has been on the treatment and stabilisation of irregular myopic astigmatism from kerato-ectatic conditions by means of corneal cross-linking and intrastromal ring/in-lay implantation.Discussion:Refractive surgery remains a controversial topic in paediatric age population. However, the evidence clearly supports refractive surgery for treatment of children with refractive amblyopia and for treatment of accommodative esotropia in children unable or unwilling to wear spectacles or contact lenses.Conclusion:Consensus exists among published authors that refractive surgery may be considered in children with refractive amblyopia after exhausting various therapeutic medical options for amblyopia. Published authors have universally endorsed undertaking prospective multi-centred RCTs to conclusively establish the long-term safety and efficacy of various types of refractive surgery in the paediatric patients of different age groups.

scholarly journals Etiology and outcomes of current posterior chamber phakic intraocular lens extraction

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Hideki Hayakawa ◽  
Kazutaka Kamiya ◽  
Wakako Ando ◽  
Masahide Takahashi ◽  
Nobuyuki Shoji
Keyword(s):  
Visual Acuity ◽  
Patient Satisfaction ◽  
Intraocular Lens ◽  
Posterior Chamber ◽  
Phakic Intraocular Lens ◽  
Distance Visual Acuity ◽  
Lens Extraction ◽  
Refractive Outcomes ◽  
Uncorrected Distance Visual Acuity ◽  
Surgical Extraction

AbstractThis study was aimed to review the etiology and the outcomes of current posterior chamber phakic intraocular lens (Visian ICL, STAAR Surgical) extraction. This review comprised 770 eyes of 403 consecutive patients undergoing ICL extraction. We evaluated prevalence, etiology, uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), predictability, and patient satisfaction. ICL extraction was required in 8 of 770 (1.0%) eyes. The most common reason was the progression of the pre-existing cataract formation in 5 eyes (63%), followed by residual refractive errors in 3 eyes (38%). Of the 7 eyes targeted for emmetropia, 7 (100%) and 6 (86%) achieved UDVAs of 20/40 and 20/20 or better, respectively. Three eyes (38%) showed no change in CDVA, 3 eyes (38%) gained 1 line, 2 eyes (25%) gained 3 or more lines. 88% and 100% were within ± 0.5 and 1.0 diopter (D), respectively, of the targeted correction. Patient satisfaction improved significantly, from 3.0 ± 1.4 preoperatively, to 8.0 ± 2.4 postoperatively. No vision-threatening complications occurred. ICL extraction was required in approximately 1% of ICL-implanted eyes. Visual and refractive outcomes were good, and patient satisfaction was overall high, even in ICL-extracted eyes.

Spontaneous Fracture of an Implanted Posterior Chamber Intraocular Lens

2005 ◽  
Vol 15 (4) ◽  
pp. 507-509 ◽  
Author(s):  
I. Çaça ◽  
K. Ünlü ◽  
S. Ari ◽  
I. Aksit
Keyword(s):  
Intraocular Lens ◽  
Rare Complication ◽  
Fracture Site ◽  
Posterior Chamber ◽  
Traumatic Cataract ◽  
Lens Extraction ◽  
Spontaneous Fracture ◽  
Fourth Report ◽  
Posterior Chamber Intraocular Lens ◽  
Posterior Chamber Iol

Purpose Spontaneous fracture of an intraocular lens (IOL) haptic is a rare complication of cataract surgery. The authors report a case of spontaneous fracture of an implanted posterior chamber IOL. Case Five years ago, a 12-year-old patient underwent linear lens extraction, posterior capsulotomy, and anterior vitrectomy due to traumatic cataract and received a polymethyl methacrylate (PMMA) biconvex posterior chamber IOL implanted in ciliary sulcus. Five years later, IOL optic was found in anterior chamber with its haptics broken from the optic-haptic junction. Discussion The broken haptic was examined with scanning electron microscopy. The fracture site of the haptic was on the optic-haptic junction. The fractured surface had a regular appearance. Conclusions To our knowledge, this is the fourth report of spontaneous fracture of an implanted posterior chamber IOL.

scholarly journals Chronic Endophthalmitis Caused by Pseudomonas stutzeri

2020 ◽  
Vol 11 (3) ◽  
pp. 595-599
Author(s):  
Saeed T. Alshahrani ◽  
J. Fernando Arevalo
Keyword(s):  
Pseudomonas Stutzeri ◽  
Posterior Chamber ◽  
Topical Steroids ◽  
Sensitivity Testing ◽  
Corneal Incision ◽  
Presumptive Diagnosis ◽  
Lens Extraction ◽  
History Of ◽  
Sudden Decrease ◽  
The Right

A patient presented with complaints of a sudden decrease in vision, ocular redness, and pain in the right eye. The patient had a history of clear lens extraction with intraocular lens (IOL) implantation for myopia 2 years previously. He had been prescribed topical steroids for episodes of inflammation that occurred repeatedly every 1–2 months. With a presumptive diagnosis of chronic endophthalmitis, a 23-G transconjunctival sutureless pars plana vitrectomy (PPV) with delivery of intravitreal antibiotics was performed the next day. Culture sensitivity testing of the vitreous sample indicated <i>Pseudomonas stutzeri</i> that was sensitive to ceftazidime and gentamicin. Two weeks later, the patient presented with sudden loss of vision and all the signs of recurrent endophthalmitis. 23-G transconjunctival sutureless PPV was performed along with removal of the posterior chamber IOL through a corneal incision. Complete resolution was only achieved after removal of the IOL, resulting in excellent visual recovery. Due to its chronic and fulminating nature, <i>P. stutzeri</i> can induce endophthalmitis and should be considered in the differential diagnosis. Aseptic measures are the best prevention.

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