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Anterior segment optical coherence tomography

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https://www.readbyqxmd.com/read/28729370/anterior-segment-optical-coherence-tomography-angle-and-vault-analysis-after-toric-and-non-toric-implantable-collamer-lens-v4c-implantation-in-patients-with-high-myopia
#1
Guillermo Garcia-De la Rosa, Andrew Olivo-Payne, Juan Carlos Serna-Ojeda, Maria Sandra Salazar-Ramos, Alejandro Lichtinger, Arturo Gomez-Bastar, Arturo Ramirez-Miranda, Alejandro Navas, Enrique O Graue-Hernandez
OBJECTIVE: To assess anterior segment changes, including iridocorneal angle and vault, after toric and non-toric implantable collamer lens (ICL) V4c (STAAR Surgical AG) implantation under different lighting conditions. METHODS: Longitudinal, prospective, case series. Patients with high myopia (>6 dioptres) underwent toric and non-toric ICL V4c implantation. Optical coherence tomography measurements were taken under different lighting conditions preoperatively and at 1 week and 1, 6 and 12 months of follow-up...
July 20, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28728288/-descemet-s-membrane-endothelial-keratoplasty-for-treatment-of-patients-with-corneal-endothelial-decompensation
#2
T Huang, C Ouyang, J Zhan, L Jiang
Objective: To evaluate the clinical outcomes of Descemet's membrane endothelial keratoplasty (DMEK) for treatment of patients with corneal endothelial decompensation in China. Methods: Interventional case series. Ten patients (10 eyes) with the diagnosis of corneal endothelial decompensation received DMEK during July 2016 and September 2016 in Zhongshan Ophthalmic Center. Descemet's membrane of the donor tissue was carefully stripped from the underlying stroma manually and cut with a 7.75- or 8.0-mm-diameter donor punch...
July 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28725485/segmentation-errors-in-macular-ganglion-cell-analysis-as-determined-by-optical-coherence-tomography-in-eyes-with-macular-pathology
#3
Rayan A Alshareef, Abhilash Goud, Mikel Mikhail, Hady Saheb, Hari Kumar Peguda, Sunila Dumpala, Shruthi Rapole, Jay Chhablani
BACKGROUND: To evaluate artifacts in macular ganglion cell inner plexiform layer (GCIPL) thickness measurement in eyes with retinal pathology using spectral-domain optical coherence tomography (SD OCT). METHODS: Retrospective analysis of color-coded maps, infrared images and 128 horizontal B-scans (acquired in the macular ganglion cell inner plexiform layer scans), using the Cirrus HD-OCT (Carl Zeiss Meditec, Dublin, CA). The study population included 105 eyes with various macular conditions compared to 30 eyes of 30 age-matched healthy volunteers...
2017: International Journal of Retina and Vitreous
https://www.readbyqxmd.com/read/28724824/late-onset-descemet-s-membrane-detachment-20-years-after-penetrating-keratoplasty
#4
Sharon D'Souza, Narpat Solanki, K R Sushma, Priyank Solanki
This paper reports a case of spontaneous Descemet's Membrane (DM ) detachment 20-years after penetrating keratoplasty (PK). The patient presented with acute onset blurred vision in the right eye associated with mild ocular discomfort. There was no prior history of trauma. The patient had undergone PK in the right eye 20 years back. Detailed ophthalmic examination showed best corrected visual acuity of hand movements close to face in the right eye and 20/80 in the left eye. The right eye showed diffuse graft edema but no congestion, epithelial defect, or loss of continuity of graft-host junction to suggest a traumatic etiology...
July 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28724823/topography-guided-neutralization-technique-for-the-management-of-flap-complication-in-laser-in-situ-keratomileusis
#5
Rohit Shetty, Rushad Shroff, Tushar Grover, T Roshan, Chaitra Jayadev
A 29-year-old male was referred following a flap loss after the creation of a thin, irregular flap with a visual acuity of logMAR 0.1 with -2.0 DS-2.75 DC × 175°. Corneal topography and anterior segment optical coherence tomography revealed an irregular corneal curvature and epithelial profile. Phototherapeutic keratectomy (PTK) followed by Topography - Guided Custom Ablation Treatment (TCAT), as a modification of the topographic neutralization technique protocol, was planned to regularize the corneal surface and treat the residual refractive error...
July 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28724813/correlation-between-the-graft-host-junction-of-penetrating-keratoplasty-by-anterior-segment-optical-coherence-tomography-and-the-magnitude-of-postoperative-astigmatism
#6
Ghada Azab Nassar, Shaimaa Abd El Salam Arfeen
PURPOSE: This study aimed to evaluate the alignment pattern of the graft-host junction after penetrating keratoplasty (PK) by anterior segment-optical coherence tomography (AS-OCT) and to correlate this pattern with the magnitude of postoperative astigmatism. METHODS: This retrospective observational study was carried out on forty patients who underwent PK from February 2013 to August 2014. AS-OCT was performed, and the graft-host junctions were classified into well-apposed junction, malapposed junction, and equally apposed junction...
July 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28711588/a-framework-for-computational-fluid-dynamic-analyses-of-patient-specific-stented-coronary-arteries-from-optical-coherence-tomography-images
#7
Susanna Migliori, Claudio Chiastra, Marco Bologna, Eros Montin, Gabriele Dubini, Cristina Aurigemma, Roberto Fedele, Francesco Burzotta, Luca Mainardi, Francesco Migliavacca
The clinical challenge of percutaneous coronary interventions (PCI) is highly dependent on the recognition of the coronary anatomy of each individual. The classic imaging modality used for PCI is angiography, but advanced imaging techniques that are routinely performed during PCI, like optical coherence tomography (OCT), may provide detailed knowledge of the pre-intervention vessel anatomy as well as the post-procedural assessment of the specific stent-to-vessel interactions. Computational fluid dynamics (CFD) is an emerging investigational tool in the setting of optimization of PCI results...
July 12, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28704321/observation-of-retrocorneal-plaques-in-patients-with-infectious-keratitis-using-anterior-segment-optical-coherence-tomography
#8
Yuki Takezawa, Takashi Suzuki, Atsushi Shiraishi
PURPOSE: Endothelial plaques are a typical characteristic in patients with fungal keratitis. However, bacterial keratitis and herpetic keratouveitis are rarely associated with fibrin formation on the retrocorneal surface. This study was conducted to examine plaques attached to the endothelium in patients with infectious keratitis using anterior segment optical coherence tomography (AS-OCT). METHODS: Seventeen patients (10 women and 7 men; mean age, 75 ± 15.5 years) suspected to have infectious keratitis with retrocorneal plaques were included...
July 11, 2017: Cornea
https://www.readbyqxmd.com/read/28698011/clinical-and-morphological-manifestations-of-aniridia-associated-keratopathy-on-anterior-segment-optical-coherence-tomography-and-in-vivo-confocal-microscopy
#9
Anna Voskresenskaya, Nadezhda Pozdeyeva, Tatyana Vasilyeva, Yevgeniy Batkov, Aleksandr Shipunov, Boris Gagloev, Rena Zinchenko
PURPOSE: The study aimed to evaluate clinical and morphological changes in the limbal palisades of Vogt (POV) at different stages of aniridia-associated keratopathy (AAK) and to assess possible utility of anterior segment optical coherence tomography (AS-OCT) for the visualization of limbal progenitor structures as it correlates to laser scanning confocal microscopy (LSCM) data. METHODS: The study involved 32 patients (59 eyes) with congenital aniridia. AAK stage was defined based on biomicroscopy...
July 8, 2017: Ocular Surface
https://www.readbyqxmd.com/read/28696173/multimodal-imaging-in-anterior-uveitis
#10
Jay Siak, Padmamalini Mahendradas, Soon-Phaik Chee
Anterior uveitis is the most common group of uveitis worldwide, with a diverse spectrum ranging from autoimmune and infectious to masquerade etiologies. Elucidation of the underlying etiology may be challenging, but it remains important, especially for recurrent uveitis. Multimodal imaging has improved our understanding and management of many posterior uveitis and panuveitis. Similarly, a wide variety of anterior segment ophthalmic imaging techniques are available to allow the monitoring of the structural changes that may develop during anterior uveitis...
June 2017: Ocular Immunology and Inflammation
https://www.readbyqxmd.com/read/28695378/macular-ganglion-cell-inner-plexiform-layer-thickness-for-detection-of-early-retinal-toxicity-of-hydroxychloroquine
#11
Emrah Kan, Konuralp Yakar, Mehmet Derya Demirag, Mustafa Gok
PURPOSE: This study evaluated the macular ganglion cell-inner plexiform layer (GC-IPL) thickness using spectral-domain (SD) optical coherence tomography (OCT) in patients with chronic exposure to hydroxychloroquine (HCQ). METHODS: A total of 90 patients (90 eyes) treated with HCQ for at least 5 years and normal controls were included in the study. A fundus examination, automated threshold perimetry, and GC-IPL thickness measurements using the Cirrus high-definition OCT ganglion cell analysis algorithm were performed in all patients treated with HCQ...
July 10, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28692738/inhibition-of-monocyte-chemoattractant-protein-1-prevents-conjunctival-fibrosis-in-an-experimental-model-of-glaucoma-filtration-surgery
#12
Rachel Shujuan Chong, Ying Shi Lee, Stephanie Wai Ling Chu, Li Zhen Toh, Tina Tzee Ling Wong
Purpose: To evaluate the effect of treatment with monocyte chemoattractant protein-1 receptor inhibitor (MCP-Ri) to maintain bleb survival and prevent fibrosis in an experimental model of glaucoma filtration surgery (GFS). Methods: GFS was performed on one eye of C57/Bl6 mice (n = 36) that was treated with MCP-Ri, mitomycin-C (MMC), or vehicle at the time of surgery. Real-time polymerase chain reaction was used to evaluate conjunctival expression of monocyte chemoattractant protein-1 (MCP-1), TGFB1, TGFB2, collagen 1a1 (Col1a1), sparc (Sparc), and fibronectin at 2 and 7 days following surgery...
July 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28692596/inadvertent-cyclodialysis-cleft-and-hypotony-following-ab-interno-trabeculotomy-using-the-trabectome-device-requiring-surgical-repair
#13
Thomas A Berk, Jella A An, Iqbal Ike K Ahmed
PURPOSE: To report the first case of inadvertent cyclodialysis cleft and hypotony requiring surgical repair following ab-interno trabeculotomy (AIT) using the Trabectome device, and the postoperative clinical results following direct suture cyclopexy. METHODS: A 55-year-old man with hypotonous maculopathy secondary to cyclodialysis cleft inadvertently created 3 years earlier during AIT using the Trabectome device was referred for repair. Direct suture cyclopexy was performed and topical homatropine and dexamethasone drops were prescribed postoperatively...
July 7, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28691943/effect-of-a-new-matrix-therapy-agent-in-persistent-epithelial-defects-after-bacterial-keratitis-treated-with-topical-fortified-antibiotics
#14
Marc-Antoine Chappelet, Diane Bernheim, Christophe Chiquet, Florent Aptel
PURPOSE: To evaluate the effect of topical application of a matrix regenerating agent (RGTA) in subjects with a persistent epithelial defect after bacterial keratitis treated with topical fortified antibiotics. METHODS: In this prospective case series of 14 subjects (14 eyes) with a persisting corneal ulcer after the cessation of fortified antibiotics, subjects were treated with an RGTA at a dose of 1 drop every other day. The main outcome measure was the proportion of subjects with complete corneal healing 1 month after initiation of treatment...
July 6, 2017: Cornea
https://www.readbyqxmd.com/read/28689243/giant-intrastromal-cleft-in-corneal-hydrops
#15
Virgilio Galvis, Alejandro Tello, Marcela F Cianci, Luis Carlos Escaf, M Margarita Parra
A 15-year-old male patient with corneal hydrops and a giant intrastromal cleft (pseudocyst) successfully received medical treatment with topical prednisolone, hypertonic saline solution and ocular hypotensive eyedrops. Anterior segment optical coherence tomography (OCT) was used as an auxiliary tool for assessing the response to treatment during follow-up time (33 months).
July 8, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28687847/silk-fibroin-films-for-corneal-endothelial-regeneration-transplant-in-a-rabbit-descemet-membrane-endothelial-keratoplasty
#16
Natalia Vázquez, Carlos A Rodríguez-Barrientos, Salvador D Aznar-Cervantes, Manuel Chacón, José L Cenis, Ana C Riestra, Ronald M Sánchez-Avila, Mairobi Persinal, Agustín Brea-Pastor, Luis Fernández-Vega Cueto, Álvaro Meana, Jesús Merayo-Lloves
Purpose: Develop a silk fibroin (SF)-based artificial endothelial graft for its use in a rabbit Descemet membrane endothelial keratoplasty (DMEK). Methods: Human and rabbit artificial corneal endothelial grafts were developed through the culture of human and rabbit corneal endothelial cells (CECs) on SF films. Rabbit artificial SF endothelial grafts were transplanted in a DMEK surgery into a rabbit in vivo model. Results: SF artificial endothelial grafts showed the characteristic endothelial markers: zonula occludens (ZO-1) and Na+/K+ ATPase...
July 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28679132/comment-on-advantages-of-anterior-segment-optical-coherence-tomography-evaluation-of-the-kayser-fleischer-ring-in-wilson-disease
#17
Niklas Telinius, Peter Ott, Jesper Hjortdal
No abstract text is available yet for this article.
August 2017: Cornea
https://www.readbyqxmd.com/read/28673750/quality-of-vision-in-eyes-with-epiphora-undergoing-lacrimal-passage-intubation
#18
Shizuka Koh, Yasushi Inoue, Shintaro Ochi, Yoshihiro Takai, Naoyuki Maeda, Kohji Nishida
PURPOSE: To investigate visual function and optical quality in eyes with epiphora undergoing lacrimal passage intubation. DESIGN: Prospective case series. METHODS: Thirty-four eyes of 30 patients with lacrimal passage obstruction were enrolled. Before and 1 month after lacrimal passage intubation, functional visual acuity (FVA), higher-order aberrations (HOAs), lower tear meniscus and tear clearance were assessed. An FVA measurement system was used to examine changes in continuous visual acuity (VA) over time, and visual function parameters such as FVA, visual maintenance ratio, and blink frequency were obtained...
June 30, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28671922/a-case-of-bilateral-pigment-dispersion-syndrome-following-many-years-of-uninterrupted-treatment-with-atropine-1-for-bilateral-congenital-cataracts
#19
Corrado Gizzi, Jibran Mohamed-Noriega, Ian Murdoch
PURPOSE: Describe an unusual case of bilateral pigment dispersion syndrome (PDS) following years of uninterrupted treatment with atropine 1% for bilateral congenital cataracts, speculate on potential mechanisms leading to this condition. DESIGN: This is a case report. CASE: A 45-year-old white patient on long-term treatment with atropine 1% ointment since his infancy for bilateral congenital cataracts developed PDS with secondary ocular hypertension...
June 30, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28671154/cross-sectional-observational-study-of-anterior-segment-parameters-using-anterior-segment-optical-coherence-tomography-in-north-indian-population
#20
Latika Khatri Dalal, Renu Dhasmana, Amit Maitreya
PURPOSE: To study the anterior segment (AS) parameters using AS optical coherence tomography (AS-OCT) in the North Indian population. METHODS: A hospital-based, observational, cross-sectional study was conducted over a period of 1 year. It included 251 normal individuals aged 20-70 years. Participants underwent imaging with AS-OCT.Ocular parameters included anterior chamber angle (ACA), iris cross-sectional area (ICSA), iris thickness (IT), and iris curvature (IC)...
July 2017: Annals of African Medicine
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