Cases reported • Lens Diseases

1/49. Pseudocapsulorrhexis in a patient with iridocorneal endothelial syndrome.

We describe a patient with Chandler's syndrome variant of the iridocorneal endothelial syndrome in whom ectopic Descemet's membrane was found intraoperatively on the anterior surface of the lens. Initially, the membrane was confused with the anterior lens capsule during extracapsular cataract extraction, leading to the performance of a pseudocapsulorrhexis. Electron microscopy disclosed that the epilenticular membrane was composed of multiple layers of abnormal basement membrane consistent with the iridocorneal endothelial syndrome.

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2/49. Capsular block syndrome with external blockage of the capsular opening by a ciliary sulcus fixated posterior chamber lens.

PURPOSE: To report capsular block syndrome with external blockage of the capsular opening by a posterior chamber lens fixated in the ciliary sulcus. METHOD: Case report. RESULTS: In an 89-year-old man who had undergone cataract surgery, a posterior chamber lens was accidentally fixated in the ciliary sulcus after continuous curvilinear capsulohhexis and phacoemulsification/aspiration. The next day, capsular block syndrome was noted along the posterior chamber lens optic, which was blocking the capsular opening from the outside. CONCLUSION: In all previously reported eyes with capsular block syndrome, the posterior chamber lens had been placed inside the lens capsule to block the continuous curvilinear capsulorhexis opening from the inside.

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3/49. Loss of iridolenticular contact in eyes with exfoliation syndrome may protect against glaucoma.

PURPOSE: To provide evidence for the hypothesis that dynamic iridolenticular contact predisposes to the development of glaucoma in exfoliation syndrome (XFS). methods: We present four patients with bilateral XFS and unilateral exfoliation glaucoma (XFG) whose normotensive eyes had suffered traumatic loss of dynamic iridolenticular contact. RESULTS: All 4 patients had bilateral XFS and developed XFG only in the untraumatized eyes. One patient had loss of iridolenticular contact in the traumatized eye, two had a nonreactive pupil, and one had had intracapsular cataract extraction at age 28. CONCLUSIONS: Loss of dynamic iridolenticular contact may help to protect against development of glaucoma in eyes with XFS.

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4/49. neodymium: YAG laser parabolic anterior capsulotomy in extreme capsule contraction syndrome.

We report a technique of neodymium: YAG laser parabolic anterior capsulotomy in an extreme case of capsule contraction syndrome with complete occlusion of the central opening and intraocular lens (IOL) displacement. This technique achieves both optical and mechanical benefits of a clear visual axis and possible prevention of further IOL decentration.

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5/49. Capsular block syndrome: A case series.

Capsular block syndrome (CBS) or capsular bag distension syndrome has been described after cataract removal with in-the-bag placement of a posterior chamber intraocular lens in the presence of an anterior continuous curvilinear capsulorhexis. Features of CBS include shallowing of the anterior chamber and an unexpected myopic overrefraction; occasionally, there is a persistent uveitis. The patient may be mistakenly diagnosed with pupil block glaucoma or endophthalmitis. We report 9 cases of CBS and their initial diagnoses and management. In 1 case, the capsular bag distention and anterior chamber shallowing are illustrated by ultrasound biomicroscopy.

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6/49. Bilateral anterior lenticonus: Scheimpflug imaging system documentation and ultrastructural confirmation of Alport syndrome in the lens capsule.

BACKGROUND: Alport syndrome is a combination of proteinuria, hematuria, and neurosensory high-frequency deafness. Bilateral anterior lenticonus may be a late sign. diagnosis relies on characteristic electron microscopy changes of glomerular basement membranes in renal biopsy specimens. PATIENT: A 38-year-old man was seen for progressive visual acuity loss (20/400 OU; best-corrected visual acuity, 20/60 OD and 20/50 OS). Findings from slitlamp examination included bilateral anterior lenticonus and central posterior subcapsular cataract, documented using a modified Scheimpflug imaging system. Retinal pathology was not present. On detailed questioning, a history of microhematuria and proteinuria since childhood and progressive high-frequency deafness for years were discovered. The family history was negative for nephropathies, deafness, or eye diseases. cataract extraction rehabilitated the patient's vision. RESULTS: Electron microscopy of a fragile capsulorhexis specimen showed typical thinned basal lamina with basement membrane disruptions. CONCLUSIONS: Anterior lenticonus is a rare bilateral progressive developmental anomaly. More than 90% of cases are associated with Alport syndrome. For diagnosis of Alport syndrome, the presence of 3 of 4 criteria is required: family history positive for Alport syndrome, progressive intra-auricular deafness, characteristic eye anomalies, and positive findings from glomerular ultrastructural examination. We believe that ultrastructural proof of anterior lenticonus may also be provided in the lens capsule. Arch Ophthalmol. 2000;118:895-897

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7/49. Capsular block syndrome and pseudoexpulsive hemorrhage.

Capsular block syndrome (CBS) has been recognized as a cause of immediate or delayed postoperative accumulation of fluid behind an intraocular lens/capsulorhexis complex. Hydrodissection-related rupture of the posterior capsule may be considered a variant of CBS that can manifest intraoperatively. We describe another intraoperative situation related to CBS in which fluid loculation during hydrodissection mimics a threatened expulsive hemorrhage.

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8/49. Complete capsular bag distension syndrome.

After conventional extracapsular cataract extraction and in-the-bag intr aocular lens (IOL) implantation 3 years previously, the partially cut su perior one-third of the anterior capsulotomy flap resealed in the eye of a 55-year-old woman. With the integrity of the capsular bag restored, it distended fully; the IOL was in the center and milky fluid accumulated inside. A neodymium:YAG laser was used to drain the milky fluid and di srupt the opacified anterior and posterior capsules, restoring vision.

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9/49. Capsular bag distention syndrome after combined cataract-lens implant surgery and Ahmed valve implantation.

PURPOSE: To describe the capsular bag distention syndrome after combined cataract extraction with posterior lens implant and aqueous drainage device. methods: Case report. RESULTS: A persistently shallow anterior chamber and low intraocular pressure developed after combined cataract extraction with posterior chamber lens implant and Ahmed aqueous drainage device. An optically empty space between the lens implant and posterior capsule was detected 18 days after surgery. The anterior chamber deepened within minutes after Nd:YAG posterior capsulotomy. CONCLUSION: The capsular bag distention syndrome needs to be included in the differential diagnosis of shallow anterior chamber with low intraocular pressure after combined cataract extraction and glaucoma valve implant surgery.

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10/49. Capsular block syndrome associated with horizontal jerk nystagmus.

A 78-year-old cataract patient with horizontal jerk nystagmus had phacoemulsification and intraocular lens (IOL) implantation in the capsular bag with continuous curvilinear capsulorhexis. One week postoperatively, the posterior capsule ballooned posteriorly, the anterior capsule opening was sealed to the IOL optic, and a transparent liquefied substance accumulated between the lens optic and the posterior capsule. The best corrected visual acuity was 0.6 with a myopic shift compared with the refraction after the first day. A neodymium:YAG laser posterior capsulotomy was performed, and the capsular block syndrome (CBS) resolved. The results confirm the experimental model proposed by Zacharias suggesting that saccadic eye movements contribute to CBS under certain anatomic conditions.

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