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Anterior segment optical coherence tomography

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https://www.readbyqxmd.com/read/29053564/gout-keratitis-a-case-of-peripheral-ulcerative-keratitis-secondary-to-gout-with-a-review-of-the-literature
#1
Amirfarbod Yazdanyar, Allison E Rizzuti, Elzbieta Mechel, Ksenia Denisova, Douglas R Lazzaro
PURPOSE: To report a case of peripheral ulcerative keratitis secondary to gout. METHODS: A 41-year-old man with a history of severe gout disease presented with pain and redness of the right eye. Physical examination revealed 2 areas of peripheral corneal thinning with overlying epithelial defects. Adjacent to these areas, reflective crystals were identified in the corneal stroma. Anterior segment optical coherence tomography demonstrated stromal corneal deposits...
October 17, 2017: Cornea
https://www.readbyqxmd.com/read/29053561/recognizing-and-managing-bullous-descemet-detachment-secondary-to-accidental-hydroseparation-during-phacoemulsification-cataract-surgery-by-relaxing-descemetotomy
#2
Soosan Jacob, Amar Agarwal, Athiya Agarwal, Saijimol Ai
PURPOSE: To report a new technique called relaxing Descemetotomy for treatment of bullous Descemet detachment (BDD) secondary to accidental hydroseparation of Descemet membrane (DM) during stromal hydration in cataract surgery. METHODS: A clear corneal keratome entry was created close to the limbus extending inward to create a relaxing cut (ab externo relaxing Descemetotomy) on taut DM, thus creating an egress route for supra-Descemetic fluid (SDF). This was followed by pneumodescemetopexy to drain SDF internally...
October 17, 2017: Cornea
https://www.readbyqxmd.com/read/29049238/age-and-sex-related-differences-in-corneal-epithelial-thickness-measured-with-spectral-domain-anterior-segment-optical-coherence-tomography-among-egyptians
#3
Magda Mahmoud Samy, Yasmine Maher Shaaban, Tamer Abdel Fattah Badran
Is to measure the corneal epithelial thickness (CET) in a group of healthy Egyptian population and to investigate its variation with age and sex using spectral domain-anterior segment optical coherence tomography (SD-AS-OCT).This cross-sectional observational study includes 240 eyes of 120 healthy individuals (60 men, 60 women). Each gender was divided into 4 equal groups according to age as follows (18-29 years), (30-44 years), (45-59 years), and (60-80 years). The CET in 17 points over a corneal diameter of 6...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29044078/primary-calcareous-degeneration-of-the-cornea
#4
Gustavo Longhi Bordin, Fabio Dornelles, Juliana Amaral Martins, Otavio Azevedo Magalhaes
Primary calcareous degeneration is a rare corneal disease. In the past 50 years, only four cases have been described. We present the case of a 26-year-old male patient with progressive calcium deposition in both eyes with negative laboratory parameters. For the first time, anterior segment optic coherence tomography was used to investigate and establish the proper treatment.
October 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29044073/type-2-big-bubble-deep-anterior-lamellar-keratoplasty-serial-anterior-segment-optical-coherence-tomography-documentation-showing-resolution-of-bubble-in-the-postoperative-period
#5
https://www.readbyqxmd.com/read/29040117/factors-limiting-the-visual-outcome-after-descemet-stripping-automated-endothelial-keratoplasty-comprehensive-analysis-including-the-graft-position-and-irregularity
#6
Yasuaki Iwama, Takeshi Soma, Naoyuki Maeda, Yuzuru Sasamoto, Yoshinori Oie, Shizuka Koh, Kohji Nishida
PURPOSE: To investigate factors affecting best postoperative corrected distance visual acuity (CDVA) in patients who have undergone Descemet stripping automated endothelial keratoplasty (DSAEK). METHODS: Forty-two eyes of 42 patients with predominantly non-Fuchs endothelial corneal dystrophy after DSAEK were retrospectively evaluated. All patients were examined using anterior segment optical coherence tomography when their best postoperative CDVA had been achieved...
October 13, 2017: Cornea
https://www.readbyqxmd.com/read/29019068/early-epithelial-complications-of-accelerated-trans-epithelial-corneal-crosslinking-in-treatment-of-keratoconus-a-case-series
#7
Sharon S W Chow, Tommy C Y Chan, Ian Y H Wong, Michelle C Y Fan, Jimmy S M Lai, Alex L K Ng
BACKGROUND: To report a case series of early postoperative complications following combined accelerated corneal crosslinking (CXL) and trans-epithelial technique in keratoconus. CASE PRESENTATIONS: Eleven eyes underwent accelerated trans-epithelial CXL (18 mW/cm(2) for 5 min). Seven eyes (64%) developed complications in the first week postoperatively. Five eyes had large epithelial defects, and two eyes were complicated with diffuse punctate epithelial erosions...
October 10, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28993001/absence-of-adventitial-vasa-vasorum-formation-at-the-coronary-segment-with-myocardial-bridge-an-optical-coherence-tomography-study
#8
Kensuke Nishimiya, Yasuharu Matsumoto, Hongxin Wang, Zhonglie Piao, Kazuma Ohyama, Hironori Uzuka, Kiyotaka Hao, Ryuji Tsuburaya, Jun Takahashi, Kenta Ito, Hiroaki Shimokawa
BACKGROUND: Myocardial bridge (MB) is a myocardial bundle through which coronary segment tunnels and could compress coronary arteries causing myocardial ischemia. However, the characteristic structural findings of MB remain to be fully elucidated. Recently, we demonstrated that optical coherence tomography (OCT) enables us to visualize adventitial vasa vasorum (VV) formation in humans. In this study, we examined adventitial VV formation at the coronary segment with MB in humans using OCT...
October 4, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28991150/two-year-results-after-deep-sclerectomy-with-nonabsorbable-uveoscleral-implant-esnoper-clip-surgical-area-analysis-using-anterior-segment-optical-coherence-tomography
#9
Pau Romera-Romero, Jordi Loscos-Arenas, Aina Moll-Udina, Nevena Romanic-Bubalo, Jordi Castellvi-Manent, Xavier Valldeperas
PURPOSE: To report 2-year results of deep sclerectomy (DS) with mitomycin C and the uveoscleral implant Esnoper-Clip (AJL Ophthalmics, Álava, Spain), a nonabsorbable hema implant, and the morphologic analysis of the surgical area with anterior segment optical coherence tomography (AS-OCT). MATERIALS AND METHODS: In total, 41 eyes of 41 patients with medically uncontrolled open angle glaucoma who underwent DS with the uveoscleral implant were included in this prospective interventional study...
October 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28986594/plateau-iris-distribution-across-anterior-segment-optical-coherence-tomography-defined-subgroups-of-subjects-with-primary-angle-closure-glaucoma
#10
Sushma Verma, Monisha E Nongpiur, Hnin H Oo, Eray Atalay, David Goh, Tina T Wong, Shamira A Perera, Tin Aung
Purpose: We previously identified three distinct subgroups of patients with primary angle closure glaucoma (PACG) based on anterior segment optical coherence tomography (ASOCT) imaging. Group 1 was characterized by a large iris area with deepest anterior chambers, group 2 by a large lens vault (LV) and shallow anterior chamber depth (ACD), and group 3 displayed intermediate values across iris area, LV, and ACD. The purpose of the present study was to determine the distribution of plateau iris in these subgroups using ultrasound biomicroscopy (UBM) features...
October 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28985226/scaling-and-maintenance-of-corneal-thickness-during-aging
#11
Takenori Inomata, Alireza Mashaghi, Jiaxu Hong, Takeshi Nakao, Reza Dana
Corneal thickness is tightly regulated by its boundary endothelial and epithelial layers. The regulated set-point of corneal thickness likely shows inter-individual variations, changes by age, and response to stress. Using anterior segment-optical coherence tomography, we measure murine central corneal thickness and report on body size scaling of murine central corneal thickness during aging. For aged-matched mice, we find that corneal thickness depends on sex and strain. To shed mechanistic insights into these anatomical changes, we measure epithelial layer integrity and endothelial cell density during the life span of the mice using corneal fluorescein staining and in vivo confocal microscopy, respectively and compare their trends with that of the corneal thickness...
2017: PloS One
https://www.readbyqxmd.com/read/28976414/adjuvant-stromal-amphotericin-b-injection-for-late-onset-dmek-infection
#12
Elmer Y Tu, Parag A Majmudar
PURPOSE: To report the successful medical management of a late-onset Descemet membrane endothelial keratoplasty (DMEK)-related interface infection. METHODS: A case of DMEK endothelial keratoplasty-related infection treated with intrastromal antifungal injection was identified. The following information was collected: demographic data, surgical indications, donor rim cultures, donor mate outcomes, clinical course, diagnostic tests, and clinical outcome. RESULTS: A DMEK patient developed a single infiltrate approximately 1 month after uncomplicated DMEK...
October 2, 2017: Cornea
https://www.readbyqxmd.com/read/28974214/idiopathic-pigmented-vitreous-cyst-without-autofluorescence-a-case-report
#13
Jing Lu, Yan Luo, Lin Lu
BACKGROUND: Vitreous cysts are rare clinical findings and seldom cause visual disturbance. They are generally classified as congenital or acquired and are considered idiopathic when the etiology can not be determined. A previous electron microscopic observation on an idiopathic pigmented vitreous cyst has confirmed its pigment epithelial origin. However, the specific kind of pigment epithelium involved remains unclear. CASE PRESENTATION: A 39-year-old female presented with a round-shaped floater causing frequent visual disturbance in the left eye...
October 3, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28974213/short-term-in-vivo-morphological-changes-of-amniotic-membrane-after-fibrin-glue-assisted-pterygium-surgery-on-anterior-segment-optical-coherence-tomography-a-case-presentation
#14
Jun Hyuk Son, Su-Ho Lim
BACKGROUND: The evaluations of morphological changes of amniotic membrane (AM), even after successful AM transplantation surgery without complications, may be difficult. Moreover, there was no report regarding morphological changes after fibrin glue-assisted AM transplantation with pterygium excision. Here, we highlight and describe the use of spectral domain optical coherence tomography (OCT) for the evaluation of the morphological features of amniotic membrane (AM) and of associated in vivo structural changes after fibrin glue-assisted pterygium surgery...
October 3, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28969525/rekeratoplasty-for-the-correction-of-refractive-status-due-to-post-lasik-donor-graft
#15
Ayse Yagci, Melis Palamar, Ozlem Barut Selver, Banu Yaman
We report a case of cataract-combined penetrating keratoplasty that required rekeratoplasty for refractive status because of the inadvertent use of a cornea from a donor who had undergone LASIK surgery. The case presents the use of perioperative visualization, anterior segment optic coherence tomography, and histopathologic confirmation. A 63-year-old female patient with leukoma and cataract in the left eye underwent combined cataract surgery and penetrating keratoplasty. During surgery, a jelly-like layer extending a few millimeters in diameter was observed around the lenticule...
September 30, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28969170/comparison-of-central-corneal-thickness-using-anterior-segment-optical-coherence-tomography-versus-ultrasound-pachymetry
#16
Prasanna Venkatesh Ramesh, Kirti Nath Jha, Krishnagopal Srikanth
INTRODUCTION: Corneal thickness is an important and sensitive indicator of corneal health. It is useful in monitoring corneal diseases such as corneal oedema and keratoconus, and selecting patients for refractive surgery. Central Corneal Thickness (CCT) is a risk factor for Primary Open-Angle Glaucoma (POAG). AIM: To compare CCT using ultrasound pachymetry and Anterior Segment Optical Coherence Tomography (AS-OCT), and also to find out the reproducibility of AS-OCT readings for both central and pericentral corneal areas...
August 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28966854/retinal-imaging-in-human-autopsy-eyes-using-a-custom-optical-coherence-tomography-periscope
#17
Ryan P McNabb, James Tian, Sina Farsiu, Joseph A Izatt, Eleonora M Lad, Anthony N Kuo
Age-related macular degeneration (AMD) is a major cause of vision loss in the elderly. To better study the pathobiology of AMD, postmortem eyes offer an excellent opportunity to correlate optical coherence tomography (OCT) imaging characteristics with histopathology. However, postmortem eyes from autopsy present challenges to standard OCT imaging including opaque anterior segment structures and standard of care autopsy processing resulting in oblique views to the macula. To overcome these challenges, we report a custom periscope attached by a standard mount to an OCT sample arm and demonstrate high quality macular OCT acquisitions in autopsy-processed eyes...
September 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/28957977/single-pass-4-throw-pupilloplasty-for-pre-descemet-endothelial-keratoplasty
#18
Priya Narang, Amar Agarwal, Dhivya A Kumar
PURPOSE: To describe the feasibility and applicability of the single-pass 4-throw pupilloplasty (SFT) technique in the Pre-Descemet endothelial keratoplasty (PDEK) procedure. METHODS: In cases with endothelial decompensation and pupil deformity, SFT was performed to prevent the escape of air into the posterior segment. Fourier domain anterior segment optical coherence tomography was performed to analyze elevation of the iris and the suture tail end from the iris plane...
September 26, 2017: Cornea
https://www.readbyqxmd.com/read/28948046/prospective-3d-investigation-of-bleb-wall-after-trabeculectomy-using-anterior-segment-oct
#19
Fumika Watanabe-Kitamura, Toshihiro Inoue, Sachi Kojima, Kei-Ichi Nakashima, Ayako Fukushima, Hidenobu Tanihara
PURPOSE: We used three-dimensional anterior-segment optical coherence tomography (3D AS-OCT) to evaluate time-dependent posttrabeculectomy changes in bleb wall volume and intensity. METHODS: This prospective observational study included patients with open-angle glaucoma who underwent fornix-based trabeculectomy between January 2012 and October 2012. Twenty-nine eyes met inclusion criteria, and the bleb walls of 22 were amenable to three-dimensional analysis by 3D AS-OCT for 1 year after surgery...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28943388/corneal-higher-order-aberrations-and-visual-improvement-following-corneal-transplantation-in-treating-herpes-simplex-keratitis
#20
Eisuke Shimizu, Takefumi Yamaguchi, Daisuke Tomida, Yukari Yagi-Yaguchi, Yoshiyuki Satake, Kazuo Tsubota, Jun Shimazaki
PURPOSE: To examine corneal higher-order aberrations (HOAs) and visual improvement following corneal transplantation in treating corneal scar caused by herpes simplex keratitis (HSK). DESIGN: Retrospective consecutive case series. METHODS: This study included a total of 52 eyes: 18 normal subjects, and 34 eyes of consecutive patients with corneal scar due to HSK who underwent penetrating keratoplasty (PKP, 17 eyes) or deep anterior lamellar keratoplasty (DALK, 17 eyes)...
September 21, 2017: American Journal of Ophthalmology
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