Posttrabeculectomy Anterior Subcapsular Cataract Formation Induced by Anterior Chamber Air

1993 ◽  
Vol 24 (5) ◽  
pp. 314-319
Author(s):  
Ayako Asamoto ◽  
Michael E Yablonski
Keyword(s):  
Anterior Chamber ◽  
Cataract Formation ◽  
Anterior Subcapsular Cataract

Vitreous Prolapse and Lens Injury

2013 ◽  
Author(s):  
Paul J. Harasymowycz
Keyword(s):  
Anterior Chamber ◽  
Extended Period ◽  
Clinical Situation ◽  
Lens Capsule ◽  
Surgical Trauma ◽  
Cataract Formation ◽  
Visual Axis ◽  
Lens Extraction ◽  
Vitreous Prolapse ◽  
Clinically Significant

During trabeculectomy, when a sclerostomy and iridectomy are performed, the structures immediately posterior to the iris, namely the zonules, lens capsule, ciliary processes, and anterior hyaloid face may be violated, resulting in a variety of intraoperative and postoperative complications. Lens injury, including cataract formation, and vitreous prolapse are 2 of the complications that may occur intraoperatively. Cataract formation is one of the most common occurrences after trabeculectomy, reported in approximately 50% of cases. While development of the cataract is usually a slow process, it occurs more frequently in patients with a history of diabetes, postoperative flat anterior chambers, or intraocular inflammation, as well as in a patient with a negative spherical equivalent (preoperative lens status) and pseudoexfoliation syndrome. Older age is a risk factor, since natural cataract development may be accelerated; however, cataracts may develop in up to 25% of younger (<55 years of age) patients undergoing trabeculectomy. The utilization of postoperative steroids has also been implicated in the development of posterior subcapsular opacities. Although not a common occurrence, cataracts may also develop soon after surgery due to direct intraoperative surgical trauma to the lens. If the opacity is focal and does not encroach on or obstruct the visual axis, no further action may be needed. If there is obvious rupture of the lens capsule causing clinically significant inflammation that may compromise bleb development, urgent lens extraction should be performed. If the clinical situation permits, it is desirable to wait at least 3 months until the bleb matures. Rapidly forming cataracts may also develop due to prolonged contact between the lens and the cornea, such as occurs intraoperatively if forceps inadvertently indent the cornea while retracting the conjunctiva during a limbus-based trabeculectomy. Similarly, the lens may opacify if the anterior chamber is flat for an extended period of time before the scleral flap sutures are adequately tied. Likewise, postoperative hypotony with a flat anterior chamber may lead to cataract formation (see Chapter 10).

scholarly journals Lens-Specific Expression of TGF-β Induces Anterior Subcapsular Cataract Formation in the Absence of Smad3

2006 ◽  
Vol 47 (8) ◽  
pp. 3450 ◽  
Author(s):  
Alice Banh ◽  
Paula A. Deschamps ◽  
Jack Gauldie ◽  
Paul A. Overbeek ◽  
Jacob G. Sivak ◽  
...  
Keyword(s):  
Cataract Formation ◽  
Specific Expression ◽  
Anterior Subcapsular Cataract

scholarly journals Matrix Metalloproteinase-9–Null Mice Are Resistant to TGF-β–Induced Anterior Subcapsular Cataract Formation

2014 ◽  
Vol 184 (7) ◽  
pp. 2001-2012 ◽  
Author(s):  
Anna Korol ◽  
Giuseppe Pino ◽  
Dhruva Dwivedi ◽  
Jennifer V. Robertson ◽  
Paula A. Deschamps ◽  
...  
Keyword(s):  
Matrix Metalloproteinase ◽  
Matrix Metalloproteinase 9 ◽  
Cataract Formation ◽  
Anterior Subcapsular Cataract ◽  
Metalloproteinase 9

scholarly journals Anterior Chamber Iris Claw Lens for the Treatment of Aphakia in a Patient with Megalocornea

2015 ◽  
Vol 6 (2) ◽  
pp. 164-169 ◽  
Author(s):  
Norman Saffra ◽  
Aleksandr Rakhamimov ◽  
Robert Masini ◽  
Kenneth J. Rosenthal
Keyword(s):  
Anterior Chamber ◽  
Intraocular Lens ◽  
Crystalline Lens ◽  
Posterior Chamber ◽  
Cataract Formation ◽  
Posterior Chamber Intraocular Lens ◽  
Effective Option ◽  
Iris Claw Lens ◽  
Capsular Bag ◽  
Iris Claw

Megalocornea in isolation is a rare congenital enlargement of the cornea greater than 13 mm in diameter. Patients with megalocornea are prone to cataract formation, crystalline lens subluxation, zonular deficiencies and dislocation of the posterior chamber intraocular lens (PCIOL) within the capsular bag. A 55-year-old male with megalocornea in isolation developed subluxation of the capsular bag and PCIOL. The PCIOL and capsular bag were explanted, and the patient was subsequently implanted with an anterior chamber iris claw lens. An anterior chamber iris claw lens is an effective option for the correction of aphakia in patients with megalocornea.

scholarly journals Double Descemet Membrane Forming a Double Anterior Chamber

2013 ◽  
Vol 2 (3) ◽  
pp. 129-132
Author(s):  
Shmuel Graffi ◽  
Modi Naftali
Keyword(s):  
Anterior Chamber ◽  
Graft Failure ◽  
Gas Injection ◽  
Corneal Transplantation ◽  
Early Interventions ◽  
Cataract Formation ◽  
Postoperative Evaluation ◽  
Descemet Membrane ◽  
Unusual Condition ◽  
Lens Implantation

ABSTRACT Purpose To report a case of double descemet membrane forming a double anterior chamber following ‘Big bubble’ DALK converted to PKP. Results A 52-year-old man with keratoconus underwent DALK operation converted to PKP due to macro perforation of the descemet membrane. On the postoperative evaluation a remnant of the host's descemet membrane formed a double anterior chamber. After a few months with no intervention, an attempt to deflect a thickened descemet membrane had failed, making entrance into the anterior chamber in order to excise the membrane inevitable. Two years following the second surgery a graft endothelial failure and cataract formation was documented, leading to a second corneal transplantation and lens implantation. Conclusion Double DM is an unusual condition following a DALK procedure which was converted into PKP. In the above case this complication resulted in multiple procedures and graft failure. We believe that early interventions such as gas injection or YAG laser could have resulted in a more favorable outcome. How to cite this article Graffi S, Naftali M. Double Descemet Membrane Forming a Double Anterior Chamber. J Kerat Ect Cor Dis 2013;2(3):129-132.

scholarly journals Anterior Subcapsular Cataract Formation With Long-term Topical Netarsudil Treatment for Glaucoma

2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Eileen L. Chang ◽  
David K. Emmel ◽  
Christopher C. Teng ◽  
Soshian Sarrafpour ◽  
Ji Liu
Keyword(s):  
Cataract Formation ◽  
Anterior Subcapsular Cataract

Cataracts and Visual Axis Opacities

2013 ◽  
Author(s):  
John P. Berdahl ◽  
Thomas W. Samuelson
Keyword(s):  
Visual Acuity ◽  
Anterior Chamber ◽  
Visual Fields ◽  
Glaucoma Surgery ◽  
Convincing Evidence ◽  
Filtering Surgery ◽  
Cataract Formation ◽  
Visual Axis ◽  
Chronic Corticosteroid ◽  
The Many

Glaucoma surgery can result in worsened visual acuity. This worsening may result from alterations to the ocular structures in the visual axis during or following surgery. This outcome is often troublesome for advanced glaucoma patients with severely restricted visual fields as they are very dependent on the remaining central island of vision. In patients with less severe glaucoma, postsurgical loss of acuity may be their first symptom of glaucoma. Many conditions result in decreased visual acuity following glaucoma surgery, and appropriate management of these complications is important for maintaining visual acuity. Cataract is the most common cause of decreased visual acuity after filtering surgery. Filtering surgery increases the 5-year risk of developing a visually significant cataract by 78%. The reason for cataract formation following trabeculectomy is unclear. The most accepted hypothesis is that aqueous dynamics are altered by trabeculectomy surgery. A surgical peripheral iridectomy is typically performed as part of a trabeculectomy, which permits aqueous to pass directly from the posterior chamber to the anterior chamber without first supplying nutrition to the anterior lens. This theory is consistent with the observation that cataracts are more common after laser peripheral iridotomy. Inadvertent puncture of the lens capsule during trabeculectomy surgery is also a potential cause (see Chapter 7). Another proposed cause of cataract formation is postoperative inflammation, although plausible, convincing evidence is lacking. Increased cataract formation has been observed with the use of mitomycin-C (MMC) and may be due either to increased aqueous outflow bypassing the lens or direct toxicity to the lens. Surgical complications such as intraoperative or postoperative flat anterior chamber with lens-cornea touch increase the risk of cataract formation. Additionally, postoperative medications, especially corticosteroids, are also known to be associated with cataract formation. The risk of cataract formation from topical ocular steroids is difficult to determine because of the many confounding variables.. However, the odds ratio of cataract formation from systemic and inhaled chronic corticosteroid use is approximately 1.5–2.0. The surgeon should bear potential steroid effects in mind during the postoperative period in phakic patients.

A Rare Complication of Hypermature Cataract Case Report

2021 ◽  
pp. 1-2
Keyword(s):  
Case Report ◽  
Anterior Chamber ◽  
Ocular Hypertension ◽  
Spontaneous Rupture ◽  
Unusual Case ◽  
Rare Complication ◽  
Lens Capsule ◽  
Cataract Formation ◽  
Age Related ◽  
End Stage

The hypermature senile cataract is an end stage in the process of age-related cataract formation. It can lead to numerous complications, and dislocation of the lens nucleus after spontaneous rupture is one of these complications, which is extremely uncommon. We report unusual case of spontaneous rupture of the lens capsule in a man with hypermature cataract, who presented to us with nucleus dislocation in the anterior chamber. It is important to highlight this uncommon cause of acute ocular hypertension.

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