Risk Factors of Shallow Anterior Chamber Other Than Hypotony After Ahmed Glaucoma Valve Implant

Purpose: To describe the application of a modified Ahmed glaucoma valve (AGV) surgical implantation technique in vitrectomized eyes, in order to minimize the risk of early postoperative hypotony, which leads to hemorrhagic complications. Materials and methods: Data of patients implanted with AGV using the surgical technique described were retrospectively reviewed. Inclusion criterion: glaucomatous eyes with previous history of pars plana vitrectomy. Intraocular pressure (IOP) measurement and ophthalmic examination were performed preoperatively and postoperatively weekly for 1 month for the detection of early hypotony, choroidal effusion/detachment, intraocular hemorrhage. The surgical technique consisted in creating a 5 mm long scleral tunnel with a 23 G needle reaching the anterior chamber at the iridocorneal angle, in which the Ahmed glaucoma valve tube was inserted. Results: Ten eyes of 10 patients were included. Median preoperative IOP was 30.5 mmHg [interquartile range (IQR) 28.3–33.0]; median postoperative IOP was 12.0 mmHg (IQR 9.3–13.0) at 1 week, and 12.5 mmHg (IQR 11.0–15.0) at 1 month. In no cases postoperative IOP was <8 mmHg. On the first postoperative day, five (50%) eyes showed few blood clots in the anterior chamber. On the second-week appointment, moderate choroidal effusion was observed in two eyes (20%). No hemorrhagic complications were observed. Conclusions: The creation of a long intrascleral tunnel with a 23 G needle for AGV implantation in vitrectomized eyes could be effective in decreasing leakage through the space between the valve tube and the sclerocorneal tissue. This technique is safe, easy to perform, feasible and fast. Due to its advantages and good postoperative results, it could also be adopted in non-vitrectomized eyes.

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Shallow Anterior Chamber and Uveal Effusion after Nonperforating Trauma to the Eye

American Journal of Ophthalmology ◽

10.1016/0002-9394(82)90303-8 ◽

1982 ◽

Vol 94 (6) ◽

pp. 782-784 ◽

Cited By ~ 12

Author(s):

S. Dotan ◽

M. Oliver

Keyword(s):

Anterior Chamber ◽

Shallow Anterior Chamber ◽

Uveal Effusion

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ASSOCIATION BETWEEN ANTERIOR CHAMBER DEPTH AND ENDOTHELIAL CELL LOSS AFTER PHACOEMULSIFICATION

10.36106/3003832 ◽

2021 ◽

pp. 30-31

Author(s):

Gargi Verma ◽

Kishor Kumar

Keyword(s):

Endothelial Cell ◽

Anterior Chamber ◽

Cell Damage ◽

Anterior Chamber Depth ◽

Cell Loss ◽

Endothelial Cell Loss ◽

Endothelial Cell Damage ◽

Percentage Decrease ◽

Central Cornea ◽

Shallow Anterior Chamber

Purpose: To assess the association between anterior chamber depth and endothelial cell loss after phacoemulsication Material and Methods: Ninety patients were recruited for this comparative type of observational study who were further divided into 3 groups according to anterior chamber depth (ACD). All patients underwent phacoemulsication procedure and intraocular implantation. Postoperatively endothelial cell loss (ECL) was calculated by measuring percentage decrease in endothelial cell density of central cornea and regression coefcient between ACD and ECLwas assessed in each group. Results: Endothelial cell loss was signicantly higher in shallow anterior chambers to other groups and the association between ACD and ECLwas signicant only in shallow anterior chamber depth group. Conclusion: Eyes with shallow anterior chamber depth are at higher risk for endothelial cell damage and shows an association between ACD and ECLwhen compared to deep anterior chamber depth.

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Clinical and Histopathological Features of Diffuse Infiltrating Retinoblastoma in Chinese Children

10.21203/rs.3.rs-406823/v1 ◽

2021 ◽

Author(s):

YaNan Zhang ◽

Ying Chang ◽

Bin Li ◽

Xiaolin Xu ◽

Xu Zhang

Keyword(s):

Risk Factors ◽

Anterior Chamber ◽

Fine Needle Aspiration ◽

Fine Needle Aspiration Biopsy ◽

Needle Aspiration ◽

Chinese Children ◽

Aspiration Biopsy ◽

Tumor Diameter ◽

Fine Needle ◽

Needle Aspiration Biopsy

Abstract Purpose: To describe the clinical and histopathological characteristics of diffuse infiltrating retinoblastoma underwent primary enucleation from Chinese children. Methods: It was a hospital-based retrospective study that included all eyes with retinoblastomas consecutively enucleated in the Beijing Tongren Hospital between October 2005 and October 2019. Further studies were carried out in patients diagnosed by clinicians and pathologists as diffuse infiltrating retinoblastoma. Results: Out of 1,911 patients, 37 eyes of 37 patients (2%) were classified as diffuse infiltrating type and treated with primary enucleation. The tumors were detected at a mean age of 47 months (range: 6–108 months). There were two (5%) patients with binocular tumors and one (3%) patient with a positive family history. Anterior chamber fine needle aspiration biopsy was obtained in 5 cases for diagnostic purpose. In 11 patients (30%), the retinoblastoma had not initially been diagnosed as a tumor. The most common symptoms found on ophthalmic examination were conjunctiva injection (n=17;46%) of anterior segment and vitreous seeds (n=23; 62%) of posterior segment. 12 of 37 tumors measured by imaging examination and cross-section showed the average height was 7mm and average width was 10mm. The minimum tumor diameter was just 3mm. Histopathology revealed tumor invasion into optic nerve (n=26; 70%), iris (n=14; 38%), ciliary body (n=12; 32%), massive choroid (n=2;5%) and iris neovascularization (n=24; 65%). Histopathologic risk factors (HRF) were detected in 26 eyes. Anterior chamber fine needle aspiration biopsy (FNAB), cornea endothelium with tumor seeds, anterior chamber free-floating tumor seeds, or pseudohypopyon might contribute to a higher rate of histopathological risk factors. Conclusions: Diffuse infiltrating retinoblastoma was usually masqueraded as endophthalmitis. Therefore, it should always be considered as a differential diagnosis in intraocular inflammation. Considering the so small diameter of the tumor, it should be examined carefully. Anterior chamber fine needle aspiration biopsy should be used with caution.

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Anterior Segment OCT in Primary Angle Closure Compared to Normal Subjects with Similar Shallow Anterior Chamber

Journal of Glaucoma ◽

10.1097/ijg.0000000000001915 ◽

2021 ◽

Vol Publish Ahead of Print ◽

Author(s):

Qinghong Xie ◽

Ping Ma ◽

Jutima Patlidanon ◽

Murtaza Saifee ◽

Sean Yonamine ◽

...

Keyword(s):

Anterior Chamber ◽

Anterior Segment ◽

Normal Subjects ◽

Angle Closure ◽

Anterior Segment Oct ◽

Primary Angle Closure ◽

Shallow Anterior Chamber

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Bilateral Isolated Spherophakia with Lens Subluxation, High Myopia and Secondary Angle Closure: A Case Report

10.21203/rs.2.118/v1 ◽

2018 ◽

Author(s):

Ye Zhang ◽

Ravi Thomas ◽

Cong Wang ◽

Xiangyu Shi

Keyword(s):

Anterior Chamber ◽

High Myopia ◽

Rare Condition ◽

Spherical Shape ◽

Angle Closure ◽

Lens Subluxation ◽

Pars Plana Lensectomy ◽

Shallow Anterior Chamber ◽

One Year ◽

The Right

Abstract Background: Spherophakia is a rare condition and compared to its occurrence with familial and systemic disorders, isolated spherophakia is even more uncommon. This rare case of isolated spherophakia will raise the alertness of physicians when dealing with a high myopia patient with shallow anterior chamber and relatively normal fundus. Case presentation: We report a case of a 17-year-old male who experienced painless decrease of vision in both eyes (OU) for 11 years, with progression of visual impairment and occasional ocular pain for one year. Examination revealed high myopia, increased intraocular pressures (IOP, 28 mmHg in the right eye (OD) and 33 mmHg in the left (OS)), shallow central anterior chambers, lenses of a spherical shape with superior subluxation, occludable angles without peripheral anterior synechiae, and healthy optic discs OU. A diagnosis of bilateral isolated spherophakia, lens subluxation, high myopia and secondary angle closure (AC) was made. Pars plana lensectomy with anterior vitrectomy and scleral suturing of an intraocular lens was performed. On postoperative follow-up at 19 days OD and 63 days OS, the visual acuity was 6/6 and the IOP was normal without any medication OU. Conclusions: A presentation with high myopia, shallow anterior chamber with a normal retina should alert the clinician to the possibility of spherophakia, as compared to high myopia caused by elongated axial length. Surgery should be considered in cases of spherophakia with AC where the IOP cannot be controlled by noninvasive means.

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