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Editor,—Central retinal vein occlusion (CRVO) has been reported to cause shallowing of the anterior chamber with acute angle closure glaucoma.1 2 This is due to anterior displacement of the lens-iris diaphragm caused by either the transudation of fluid from retinal vessels into the vitreous cavity or swelling of the ciliary body due to spasm, oedem...
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Citations
... SRVT sonrası rubeozis olmadan açı kapanması glokomu gelişen hastalar ile ilgili yapılmış olgu bildirileri olmakla birlikte, ÖKD ile ilgili objektif ölçüm bildiren çalışma sayısı sınırlıdır. 19,20 Mohammadi ve ark. 21 ön segment optik koherans tomografi ile yaptıkları çalışmalarında SRVT hastaların kontrol grubuna göre daha sığ ön kamara derinliği ve daha dar ön kamara açısına sahip olduklarını bulmuşlardır. ...
... Yapılan çalışmalarda SRVT'ye bağlı oluşan retinal ödem ve vasküler genişleme sonrası siliolentiküler diyaframın öne doğru yer değiştirebileceği ve bu durumun da açı kapanmasına neden olabileceği belirtilmiştir. 20 Mohammadi ve ark. 21 primer açı kapanması ve SRVT arasındaki bu önemli ilişkiye dikkat çekmişler, bu hastaların açı kapanması atağı ve gelişebilecek glokomatöz optik nöropati açısından risk altında olduklarını vurgulamışlardır. ...
Purpose: To investigate the two-year visual and anatomical outcomes of patients who had intravitreal afl ibercept monotherapy for macular edema due to branch retinal vein occlusion (BRVO). Methods: Twenty-nine eyes were included in this retrospective cohort study. All eyes were newly diagnosed as BRVO and were treated with intravitreal injections of afl ibercept. After three-months loading doses, patients were treated with a single dose of afl ibercepts if needed. The best-corrected visual acuity (BCVA) and the central macular thickness (CMT) were recorded at each monthly visit. Results: The mean ages of patients were 61.3±7.6 years. The mean BCVA was 52.2±8.5 letters at baseline, 70.1±11.2 letters at the fi rst year (p<0.001), 69.7±12.5 letters at the second year (p<0.001). The mean CMT was 555±102 μm at baseline; 285±50 μm at the fi rst year (p<0.001), 270±52 μm at the second year (p<0.001). In the fi rst year, the mean number of injections was 5.9±1.2 whereas in the second year it was 2.1±0.9. Conclusion: These long-term real-life results suggest that the intravitreal afl ibercept is an effective treatment regimen for eyes with macular edema in BRVO.
... However, shallowing of the anterior chamber (AC) following the onset of occlusion in CRVO, therefore resulting in asymmetric AC depths in the same patient, has been observed [6]. Clinical observations have shown that angle-closure glaucoma (ACG) can occur following CRVO without the formation of neovascularization in the angle of the eyes, although with a much lower incidence than NVG [7][8][9][10][11]. However, these previous studies are mainly case reports. ...
... Most of the previous studies on non-rubeotic ACG following CRVO are case reports or small case series and lack of actual measurement of AC depth [6][7][8][9]. Our study includes a series of CRVO patients with the actual measurement of AC depth. ...
Background
The purpose of this study was to report the anterior chamber (AC) depth and the attack of angle-closure glaucoma (ACG) in eyes with the recent onset of central retinal vein occlusion (CRVO).
Methods
This retrospective case series included 24 patients with recent onset of CRVO (within one month of attack) from July 2001 to December 2002. The mean follow-up period of the patients was 46 months (range: 3 to 92 months). AC depth was measured using an ultrasound biomicroscopy. Clinical data, including systemic disorders, intraocular pressure, and visual outcomes were recorded. The main outcome measures were AC depth in the diseased eye and the fellow eye of the same patient and the attack of ACG after CRVO.
Results
The mean AC depth in the diseased eyes was significantly shallower than in the unaffected fellow eyes (2.43 ± 0.45 mm vs. 2.55 ± 0.46 mm; p < 0.001). Four patients (17 %) developed ACG after the onset of CRVO within one month of the CRVO attack. In these four patients, the mean AC depth in the diseased eyes was 1.91 ± 0.21 mm, which was much shallower than the eyes without ACG attack (2.53 ± 0.40 mm).
Conclusions
AC depth is significantly shallower following the onset of CRVO. ACG can occur in patients after the onset of CRVO.
To compare anterior segment parameters in patients with central retinal vein occlusion (CRVO) with normal control subjects by anterior segment optical coherence tomography (AS-OCT).
In this coss-sectional case-control study, 42 eyes from 21 patients with unilateral CRVO and 21 eyes from 21 age- and sex-matched healthy control subjects were recruited. Study eyes were divided into three groups: involved eyes of CRVO patients (CRVO eyes), fellow eyes of CRVO patients (fellow eyes), and control eyes. Complete ocular examination and AS-OCT were performed for each eye. The AS-OCT parameters (anterior chamber depth, scleral spur angle, angle opening distance [AOD] at 500 and 750 μm from scleral spur [AOD500 and 750] and trabecular-iris space area [TISA] at 500 and 750 μm from scleral spur [TISA500 and 750]) and the rate of narrow angles (based on gonioscopy) in CRVO and fellow eyes were compared with control eyes.
The mean (SD) age of the patients and the control group were 60.09 (9.43) and 59.52 (6.66), respectively. The mean intraocular pressure in both eyes of the patients was significantly higher than the control eyes (P < 0.05). All AS-OCT parameters were significantly different among the three groups (P < 0.05). Comparing with the control eyes, CRVO eyes had shallower anterior chamber depth (2.53 vs. 2.85 mm; P = 0.002) and narrower AS-OCT angle parameters (scleral spur angle, AOD500 and 750, TISA500 and 750). Fellow eyes had also shallower anterior chamber depth (2.56 vs. 2.85 mm; P = 0.005) than control eyes and smaller scleral spur angle, AOD500 and AOD750. Five CRVO patients (23.8%) were diagnosed with narrow angles in both eyes based on gonioscopy, whereas no eye in the control group had narrow angles (P = 0.05).
Imaging with AS-OCT showed that CRVO patients had shallower anterior chamber depth and narrower angle parameters in both eyes in comparison with control eyes. Furthermore, CRVO patients had higher rates of narrow angles on gonioscopic examination.
P>A 68-year-old woman presented to the ophthalmology emergency clinic with a painful left eye of a few hours’ duration. One month prior, the patient had presented with a central retinal vein occlusion in the same eye. Examination revealed an intraocular pressure of 32 mm Hg in the left eye with 360° angle closure unaltered by indentation, a patent iridectomy from a previous combined phacoemulsification and trabeculectomy surgery, and no evident iris or angle neovascularization. Ultrasound biomicroscopic examination revealed a large suprachoroidal effusion with anterior rotation of the ciliary body and secondary angle closure in the left eye. The patient underwent successful pars plana vitrectomy, radial optic neurotomy, intravitreal triamcinolone acetonide injection, and goniosynechialysis. [ Ophthalmic Surg Lasers Imaging 2007;38:248-249.]
AUTHORS
From the Ophthalmology Department, Maisonneuve-Rosemont Hospital, University of Montreal, Montreal, Canada.
Accepted for publication September 18, 2006.
Address correspondence to Paul J. Harasymowycz, MD, Ophthalmology Research Unit, Aisle F, CARC, Maisonneuve-Rosemont Hospital, 5415 de l’Assomption Blvd., Montreal, Quebec, Canada, H1T 2M4.</P
