Treatment of Limbic Fistule and Epithelial Invasion of Anterior Chamber after Cataract Extraction

1979 ◽  
pp. 377-384
Author(s):  
M. Bonnet
Keyword(s):  
Anterior Chamber ◽  
Cataract Extraction ◽  
Epithelial Invasion

scholarly journals Implantation epithelial iris cyst following the perforating corneal injury

2006 ◽  
Vol 134 (3-4) ◽  
pp. 151-154
Author(s):  
Milos Jovanovic ◽  
Zoran Latkovic
Keyword(s):  
Visual Acuity ◽  
Anterior Chamber ◽  
Cataract Extraction ◽  
Wound Management ◽  
Surgical Removal ◽  
Extracapsular Cataract Extraction ◽  
Secondary Cataract ◽  
Corneal Injury ◽  
Iris Cyst ◽  
Iris Prolapse

The objective of this case report was to present the development of implantation cyst following the perforating corneal injury, the problems related to the treatment, including total surgical excision of the cyst, the secondary cataract extraction, iridoplasty and the artificial intraocular lens reposition. A patient first presented with perforating corneal injury inflicted by a piece of wood, with the iris prolapse. Primary wound management, reposition of prolapsed iris and corneal sutures were performed four days after the injury. Eight months later, the patient was rehospitalized due to an implantation iris cyst and traumatic cataract. The cyst was excised, the extracapsular cataract extraction was done and the anterior chamber lens was implanted. Postoperative visual acuity was normal. Three years later, the patient presented for a follow-up examination, with the cyst filled up again, occupying two thirds of the anterior chamber. This time, the cyst was completely excised, all fibrous remnants of the secondary cataract were removed, and the iridoplasty was necessary due to large iris coloboma. Reposition of the anterior chamber lens was carried out. Histological examination revealed an implantation iris cyst covered by multilayered squamous epithelium. Normal visual acuity was achieved. The patient has been followed-up for six months uneventfully. Management of perforating corneal wound with iris prolapse may lead to development of an implantation iris cyst. Puncture of the cyst as well as incomplete excision will not solve the problem. Complete surgical removal of the iris cyst is the treatment of choice.

scholarly journals Aphakic Pupillary Block by an Intact Anterior Vitreous Membrane after Total Lens Extraction by Phacoemulsification

2021 ◽  
pp. 882-888
Author(s):  
Michihiro Kono ◽  
Akiko Ishida ◽  
Sho Ichioka ◽  
Masato Matsuo ◽  
Hiroshi Shimizu ◽  
...  
Keyword(s):  
Anterior Chamber ◽  
Cataract Extraction ◽  
Japanese Woman ◽  
Acute Angle ◽  
Angle Closure ◽  
Pupillary Block ◽  
Lens Extraction ◽  
Old Japanese ◽  
Acute Angle Closure ◽  
Vitreous Prolapse

An 85-year-old Japanese woman with acute primary angle closure in her right eye underwent cataract extraction. Because of the weakness of the Zinn’s zonules, all of the lens tissue including the lens capsule was removed by phacoemulsification. Because of the absence of vitreous prolapse into the anterior chamber, vitrectomy was not performed. Nine days postoperatively, acute angle closure due to pupillary block by an anterior vitreous membrane developed. To resolve the pupillary block, anterior vitrectomy was performed on the same day. Postoperatively, her symptoms resolved, the anterior chamber deepened, and the intraocular pressure normalized. Although rare, acute angle closure due to pupillary block by an anterior vitreous membrane can occur after total lens extraction with phacoemulsification. If no vitreous prolapse occurs with total lens extraction, an intentional hyaloidotomy using an anterior vitreous cutter or iridectomy should be considered to avoid secondary angle closure.

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.

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