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optic coherent tomography

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https://www.readbyqxmd.com/read/29667428/optical-coherence-tomography-angiography-characterization-of-acute-and-late-stage-purtscher-retinopathy
#1
Pedro Gil, Miguel Raimundo, João P Marques, João Póvoa, Rufino Silva
PURPOSE: To report a case of Purtscher retinopathy imaged with optical coherence tomography angiography. METHODS: Case-report. Left eye fundoscopic examination in a 21-year old male after a road traffic accident with chest compression revealed multiple peri-papillary cotton-wool spots and intra- and pre-retinal hemorrhages. A diagnosis of Purtscher retinopathy was assumed. RESULTS: In both the superficial and deep retinal plexuses, acute stage optical coherence tomography angiography identified multiple irregular areas of capillary non-perfusion that extended beyond the clinically visible peri-papillary cotton-wool spots...
April 1, 2018: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/29666954/clinical-characteristics-of-a-japanese-patient-with-bardet-biedl-syndrome-caused-by-bbs10-mutations
#2
Kentaro Kurata, Katsuhiro Hosono, Akiko Hikoya, Akihiko Kato, Hirotomo Saitsu, Shinsei Minoshima, Tsutomu Ogata, Yoshihiro Hotta
PURPOSE: Bardet-Biedl syndrome (BBS) is a rare autosomal recessive disorder characterized by retinal dystrophy, renal dysfunction, central obesity, mental impairment, polydactyly, and hypogonadism. Only limited information on BBS is available from Japanese patients. In addition, there are currently no reports of Japanese patients with BBS caused by BBS10 mutations. The purpose of this study was to present the characteristics of a Japanese patient with BBS caused by BBS10 mutations. PATIENT AND METHODS: The patient was a 22-year-old Japanese woman...
April 17, 2018: Japanese Journal of Ophthalmology
https://www.readbyqxmd.com/read/29666920/-unusual-coloboma-of-the-optic-disc
#3
J Lenk, L E Pillunat, E Matthé
A twelve-year old girl presented herself for a routine ophthalmologic examination in our clinic. Best-corrected visual acuity (BCVA) was 1.0 on both eyes. On funduscopic examination we saw a yellow round structure inferior to the optic nerve head. In optical coherence tomography (OCT) examination the structure showed cupping and opening of the Bruch membrane and retinal pigment epithelium (RPE). Visual field testing revealed an absolute scotoma right in the area were the abnormal coloboma was localized. We diagnosed a pseudo-doubling of the optic disk, which is a rare condition with just a few reports about it in the literature...
April 17, 2018: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/29664989/choroidal-caverns-a-previously-unreported-optical-coherence-tomography-finding-in-best-vitelliform-dystrophy
#4
Adriano Carnevali, Riccardo Sacconi, Eleonora Corbelli, Lea Querques, Francesco Bandello, Giuseppe Querques
Best vitelliform macular dystrophy (VMD) is an autosomal dominant inherited dystrophy, most frequently caused by mutations in the BEST1 gene. The authors describe "choroidal caverns," a previously unreported optical coherence tomography finding in the choriocapillary and choroid of Best VMD. Histopathologic examination in eyes with Best VDM shows extensive deposition of lipofuscin in the retinal pigment epithelium (RPE) throughout the retina and accumulation of fibrillar material under the RPE and in the choroid...
April 1, 2018: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/29664986/optical-coherence-tomography-angiography-and-ultra-widefield-optical-coherence-tomography-in-a-child-with-incontinentia-pigmenti
#5
Sang Jin Kim, Jianlong Yang, Gangjun Liu, David Huang, J Peter Campbell
Incontinentia pigmenti (IP) is a rare X-linked dominant disorder that can cause retinal nonperfusion, neovascularization, and retinal detachment. Evaluation of the peripheral retinal vasculature and appropriate treatment can reduce the risk of blindness. The authors report the use of a handheld prototype optical coherence tomography angiography (OCTA) and ultra-widefield OCT (UWF-OCT) during exam under anesthesia of a 2-year-old with a history of severe early onset IP. UWF-OCT and OCTA may be used as noninvasive imaging modalities for IP and similar retinal vascular disorders in supine young children...
April 1, 2018: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/29664984/pilot-evaluation-of-a-new-surgical-technique-for-persistent-or-recurrent-large-macular-holes
#6
Vito Primavera, Teresa Centoducati, Luciana Agea, Ilaria Zucchiatti, Lea Querques, Giuseppe Querques
BACKGROUND AND OBJECTIVE: To describe a new surgical technique for persistent or recurrent large macular holes (MHs). PATIENTS AND METHODS: Patients with recurrent or persistent large MHs following vitrectomy with internal limiting membrane (ILM) peeling were recruited between October and September 2017 in this pilot study. All patients underwent preoperative and postoperative best-corrected visual acuity (BCVA), slit-lamp ophthalmoscopy, and spectral-domain optical coherence tomography (SD-OCT)...
April 1, 2018: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/29664982/variable-clinical-profile-of-fovea-plana-in-normal-children
#7
Victor M Villegas, Stephen G Schwartz, Tina D Hamet, Craig A McKeown, Hilda Capó, Harry W Flynn
BACKGROUND AND OBJECTIVE: This study is designed to illustrate various clinical findings associated with fovea plana in normal children. PATIENTS AND METHODS: A retrospective chart review of pediatric subjects with a diagnosis of fovea plana was conducted to evaluate the characteristics associated with this condition. RESULTS: All eyes had 20/40 or better best-corrected visual acuity (BCVA). In five of six subjects (83%), there was bilateral fovea plana...
April 1, 2018: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/29664977/erratum-for-evaluation-of-choroidal-hemangioma-and-treatment-with-photodynamic-therapy-by-using-enhanced-depth-imaging-optical-coherence-tomography
#8
(no author information available yet)
No abstract text is available yet for this article.
April 1, 2018: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/29664921/predictors-of-vision-impairment-in-multiple-sclerosis
#9
Bernardo Sanchez-Dalmau, Elena H Martinez-Lapiscina, Irene Pulido-Valdeolivas, Irati Zubizarreta, Sara Llufriu, Yolanda Blanco, Nuria Sola-Valls, Maria Sepulveda, Ana Guerrero, Salut Alba, Magi Andorra, Anna Camos, Laura Sanchez-Vela, Veronica Alfonso, Albert Saiz, Pablo Villoslada
Visual impairment significantly alters the quality of life of people with Multiple Sclerosis (MS). The objective of this study was to identify predictors (independent variables) of visual outcomes, and to define their relationship with neurological disability and retinal atrophy when assessed by optical coherence tomography (OCT). We performed a cross-sectional analysis of 119 consecutive patients with MS, assessing vision using high contrast visual acuity (LogMar), 2.5% and 1.25% low contrast visual acuity (Sloan charts), and color vision (Hardy-Rand-Rittler plates)...
2018: PloS One
https://www.readbyqxmd.com/read/29664832/optical-coherence-tomography-angiography-macular-vascular-density-measurements-and-the-central-10-2-visual-field-in-glaucoma
#10
Rafaella C Penteado, Linda M Zangwill, Fábio B Daga, Luke J Saunders, Patricia Isabel C Manalastas, Takuhei Shoji, Tadamichi Akagi, Mark Christopher, Adeleh Yarmohammadi, Sasan Moghimi, Robert N Weinreb
PURPOSE: To evaluate the association between macula vascular density assessed by optical coherence tomography angiography (OCT-A) and central visual field (VF) threshold sensitivities in healthy, glaucoma suspect and glaucoma patients. METHODS: A total of 185 eyes from 38 healthy participants, 31 glaucoma suspects, 72 mild glaucoma patients, and 44 moderate/severe glaucoma patients from the Diagnostic Innovations in Glaucoma Study who underwent OCT-A images of the macula and 10-2 VF testing were enrolled in this observational cross-sectional study...
April 16, 2018: Journal of Glaucoma
https://www.readbyqxmd.com/read/29662543/optical-improvements-in-the-diagnosis-of-bladder-cancer-implications-for-clinical-practice
#11
REVIEW
Tina Schubert, Steffen Rausch, Omar Fahmy, Georgios Gakis, Arnulf Stenzl
Background: For over 100 years white-light cystoscopy has remained the gold-standard technique for the detection of bladder cancer (BCa). Some limitations in the detection of flat lesions (CIS), the differentiation between inflammation and malignancy, the inaccurate determination of the tumor margin status as well as the tumor depth, have led to a variety of technological improvements. The aim of this review is to evaluate the impact of these improvements in the diagnosis of BCa and their effectiveness in clinical practice...
November 2017: Therapeutic Advances in Urology
https://www.readbyqxmd.com/read/29662298/anti-vegf-treatment-of-macular-edema-associated-with-retinal-vein-occlusion-patterns-of-use-and-effectiveness-in-clinical-practice-echo-study-report-2
#12
J Michael Jumper, Pravin U Dugel, Sanford Chen, Kevin J Blinder, John G Walt
Purpose: To evaluate the efficacy, safety, and injection frequency of vascular endothelial growth factor (VEGF) antagonists in the treatment of macular edema secondary to retinal vein occlusion (RVO) in clinical practice. Patients and methods: A multicenter retrospective study of the medical records of 165 patients (95 branch RVO, 70 central RVO) treated with at least three anti-VEGF injections in the study eye was conducted. Available data collected for at least 6 months after the first injection included Snellen best-corrected visual acuity (BCVA), central retinal thickness (CRT) by time-domain optical coherence tomography (TD-OCT) or spectral-domain optical coherence tomography (SD-OCT), anti-VEGF injections, other treatments/procedures for RVO, and adverse events...
2018: Clinical Ophthalmology
https://www.readbyqxmd.com/read/29662112/optical-coherence-tomography-angiography-vessel-density-changes-after-acute-intraocular-pressure-elevation
#13
Qi Zhang, Jost B Jonas, Qian Wang, Szy Yann Chan, Liang Xu, Wen Bin Wei, Ya Xing Wang
To investigate changes in retinal vessel density in optic nerve head (ONH) and macula after acute intraocular pressure (IOP) elevation, we conducted a prospective observational study. Eyes with IOP rise ≥5 mmHg after 2-hour dark room prone provocative test (DRPPT) were included. Vasculature of ONH and macula was examined by optical coherence tomography angiography (OCTA) at baseline and after DRPPT. Among the 65 eyes of 42 individuals, 40 eyes with qualified images were enrolled. Mean IOP rise was 9.6 ± 4...
April 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29659420/needle-based-optical-coherence-tomography-to-guide-transbronchial-lymph-node-biopsy
#14
Eugene Shostak, Lida P Hariri, George Z Cheng, David C Adams, Melissa J Suter
BACKGROUND: Transbronchial needle aspiration (TBNA), often used to sample lymph nodes for lung cancer staging, is subject to sampling error even when performed with endobronchial ultrasound. Optical coherence tomography (OCT) is a high-resolution imaging modality that rapidly generates helical cross-sectional images. We aim to determine if needle-based OCT can provide microstructural information in lymph nodes that may be used to guide TBNA, and improve sampling error. METHODS: We performed ex vivo needle-based OCT on thoracic lymph nodes from patients with and without known lung cancer...
April 13, 2018: Journal of Bronchology & Interventional Pulmonology
https://www.readbyqxmd.com/read/29659172/optic-disc-drusen-understanding-an-old-problem-from-a-new-perspective
#15
REVIEW
Steffen Hamann, Lasse Malmqvist, Fiona Costello
Optic disc drusen (ODD) are acellular deposits located in the optic nerve head of up to 2.4% of the population. They may develop as by-products of impaired axonal metabolism in genetically predisposed individuals, in whom a narrow scleral canal is hypothesized to play a role. Although ODD are often considered as benign innocent bystanders, recognized as part of a routine ophthalmological examination, the vast majority of patients with ODD have visual field defects. Optic disc drusen (ODD)-associated complications with severe visual loss, most often due to anterior ischaemic optic neuropathy, are also known to occur...
April 16, 2018: Acta Ophthalmologica
https://www.readbyqxmd.com/read/29658405/real-time-intracochlear-imaging-of-automated-cochlear-implant-insertions-in-whole-decalcified-cadaver-cochleas-using-ultrasound
#16
Thomas G Landry, Guy Earle, Jeremy A Brown, Manohar L Bance
OBJECTIVES: This study aimed to determine the feasibility of combining high-frequency ultrasound imaging, automated insertion, and force sensing to yield more information about cochlear implant insertion dynamics. METHODS: An apparatus was developed combining these aspects along with software to control implant and imaging probe positions. Decalcified unfixed human cochleas were implanted at various speeds, insertion sites, and implant models while imaging near the implant tip throughout insertion and recording force data from the cochlea mounting stage...
April 16, 2018: Cochlear Implants International
https://www.readbyqxmd.com/read/29658366/a-novel-case-using-femtosecond-laser-acquired-lenticule-for-recurrent-pterygium-case-report-and-literature-review
#17
Om Prakash Pant, Ji-Long Hao, Dan-Dan Zhou, Fan Wang, Cheng-Wei Lu
Small incision lenticule extraction (SMILE) is a minimally invasive, safe and flapless femtosecond laser technique used mainly to correct myopia through extraction of a corneal lenticule. Lenticules obtained in this way are transparent and of high quality, and thus, can be used to treat other corneal diseases. A 65-year-old male patient presented with recurrent pterygium complicated by thin cornea. The patient was treated surgically using a SMILE-extracted lenticule to avoid further complications and to maintain eyeball integrity...
January 1, 2018: Journal of International Medical Research
https://www.readbyqxmd.com/read/29657976/efficacy-of-additional-topical-betamethasone-in-persistent-cystoid-macular-oedema-after-carbonic-anhydrase-inhibitor-treatments-in-retinitis-pigmentosa
#18
Shohei Kitahata, Yasuhiko Hirami, Seiji Takagi, Cody Kime, Masashi Fujihara, Yasuo Kurimoto, Masayo Takahashi
Objective: We investigated the efficacy of additional topical betamethasone in persistent cystoid macular oedema (CMO) after carbonic anhydrase inhibitors (CAIs) therapy. Methods and analysis: This retrospective cohort study included 16 eyes of 10 patients with retinitis pigmentosa (RP). All patients were previously administered CAI for at least 3 months to treat CMO secondary to RP and lacking an effective reduction (≥11%) of central foveal thickness (CFT)...
2018: BMJ Open Ophthalmology
https://www.readbyqxmd.com/read/29657974/monocular-and-binocular-visual-impairment-in-the-uk-biobank-study-prevalence-associations-and-diagnoses
#19
Martin McKibbin, Tracey M Farragher, Darren Shickle
Objective: To determine the prevalence of, associations with and diagnoses leading to mild visual impairment or worse (logMAR >0.3) in middle-aged adults in the UK Biobank study. Methods and analysis: Prevalence estimates for monocular and binocular visual impairment were determined for the UK Biobank participants with fundus photographs and spectral domain optical coherence tomography images. Associations with socioeconomic, biometric, lifestyle and medical variables were investigated for cases with visual impairment and matched controls, using multinomial logistic regression models...
2018: BMJ Open Ophthalmology
https://www.readbyqxmd.com/read/29657836/resistive-index-of-ophthalmic-artery-correlates-with-retinal-pigment-epithelial-alterations-on-spectral-domain-optical-coherence-tomography-in-diabetic-retinopathy
#20
Manila Khatri, Sandeep Saxena, Apjit Kaur, Shashi K Bhasker, Manoj Kumar, Carsten H Meyer
Background: Retinal pigment epithelium (RPE) plays a significant role in maintenance of integrity of retinal photoreceptors and choriocapillaries. RPE derives its blood supply through ophthalmic artery (OA) via choriocapillaries. RPE topographic alterations have been observed to be associated with severity of retinopathy. The present study was undertaken to assess the correlation between resistive index (RI) of the OA with RPE topographic alterations on Spectral-Domain optical coherence tomography (SD-OCT), to our knowledge, it is for the first time...
2018: International Journal of Retina and Vitreous
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