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Anterior Segment OCT (anterior + segment_oct)
Selected AbstractsSerious complications of cosmetic NewColorIris implantationACTA OPHTHALMOLOGICA, Issue 6 2010Justin E. Anderson Acta Ophthalmol. 2010: 88: 700,704 Abstract. Purpose:, This case report describes serious postoperative complications and markedly elevated intraocular pressure (IOP) associated with the NewColorIris cosmetic implant. Methods:, We report an interventional case series of two patients who suffered multiple complications after NewColorIris implantation carried out in Panama. Assessment included visual acuity, photography, endothelial cell count and anterior segment optical coherence tomography (OCT) when possible. Results:, Both patients presented with endothelial cell loss, uveitis, pigment dispersion and elevated IOP. Anterior segment OCT demonstrated irregularities in the position and configuration of the implants within the anterior chamber with resultant areas of implant,iris and implant,endothelial contact. One patient had acute postoperative hyphaema that resolved with anterior chamber tissue plasminogen activator injection. Both patients required explantation OU, one eye has required trabeculectomy, and one eye with bullous keratopathy is being evaluated for Descemet's stripping endothelial keratoplasty. Conclusions:, Implantation of the NewColorIris cosmetic implant can lead to serious complications including hyphaema, uncontrolled IOP, severe endothelial cell loss, bullous keratopathy and anterior uveitis. Explantation may lead to improvement, but permanent damage to the trabecular meshwork and corneal endothelium persists. [source] Early changes in clear cornea incision after phacoemulsification: an anterior segment optical coherence tomography studyACTA OPHTHALMOLOGICA, Issue 7 2009Yuanling Xia Abstract. Purpose:, We aimed to investigate the ultrastructures of clear corneal incisions 24 hours after phacoemulsification using anterior segment optical coherence tomography (AS-OCT). Methods:, Sixty eyes of 60 patients scheduled for cataract surgery were randomly selected. All eyes underwent the same phacoemulsification procedure carried out by one experienced surgeon. Two-plane temporal clear corneal tunnel incisions were performed. The same types of intraocular lens and implant system were used in all patients. Images of the ultrastructures of the corneal incisions were taken using AS-OCT before and 1 day after surgery. Results:, Corneal thickness increased at the incision site after surgery in all eyes (p < 0.001). Epithelial bulla in the incision region was seen in two eyes (3%). Gaping at the internal aspect of the corneal wound was seen in 42 eyes (70%). Eyes with gaping had thicker localized cornea (p = 0.002). Descemet's membrane detachment was seen in 49 eyes (82%); this seemed to be associated with lower preoperative intraocular pressure (p = 0.01). Conclusions:, Anterior segment OCT provides sensitive and detailed measurements of the ultrastructures in clear corneal incision. [source] 4331: Anterior segment optical coherence tomography (AS-OCT): a novel diagnostic instrument for conjunctivochalasisACTA OPHTHALMOLOGICA, Issue 2010K GUMUS Purpose To evaluate cross-sectional conjunctivochalasis area (CChA) and tear meniscus area (TMA) using Fourier-Domain-RTVue-100 optical coherence tomography (OCT) before and after conjunctival cauterization and to evaluate inter- and intraobserver reliability. Methods A total of twelve eyes of 7 patients with conjunctivochalasis aged 56 to 87 were evaluated. After topical anesthesia, conjunctival cauterization was performed on the inferior bulbar conjunctiva. All patients underwent anterior segment OCT (AS-OCT) imaging prior to and 4 weeks after the procedure. Cross-sectional TMA and CChA at 3 locations (nasal, center and temporal areas) were measured in all patients. Results Non-significant increases (p= 0.177) in TMA as a whole (3 locations combined) were observed at following cauterization. CChA measurements significantly decreased in all 3 locations after cauterization (p< 0.001). Mean CChA decreased from 0.247 ± 0.24 mm2 to 0.054 ± 0.79 mm2. For two measurements of TMA by examiner 1, intraclass correlation coefficients (ICC) ranged from 0.998 to 0.999. Among two examiners, Cronbach's alpha reliability coefficients were as high as 0.993 and 0.997 before and after conjunctival cauterization. Regarding the CChA measurements, ICC values were similar to those of TMA, but Cronbach's alpha reliability coefficients were slightly less. Conclusion This study indicates the AS-OCT is a useful and reproducible instrument to measure cross-sectional area of conjunctiva prolapsing into the tear meniscus of patients with conjunctivochalasis. The method can monitor effectiveness of thermo reduction of conjunctivochalasis. [source] Imaging of primary cyst of the iris pigment epithelium using anterior segment OCT and ultrasonic biomicroscopyCLINICAL AND EXPERIMENTAL OPTOMETRY, Issue 2 2009Jeffrey CF Pong MBChB MSc FRCS (Ed) FRCS (Glas) FHKAM No abstract is available for this article. [source] | ||||||||||