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Ocular coherence tomography

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https://www.readbyqxmd.com/read/28916480/factors-associated-with-zonular-instability-during-cataract-surgery-in-eyes-with-acute-angle-closure-attack
#1
Junki Kwon, Kyung Rim Sung
PURPOSE: To compare the demographics and ocular characteristics, including anterior segment optical coherence tomography images and zonular instability in eyes with a history of acute angle closure (AAC) attack and subsequent cataract surgery. DESIGN: Retrospective, case-control study METHODS: Total 68 eyes of 56 patients with a history of AAC attack who underwent cataract surgery were enrolled. Fourteen eyes were assigned to the zonular instability (+) group and 54 were assigned to the zonular instability (-) group based on the presence of zonular instability during cataract surgery...
September 12, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28915835/macular-retinal-and-choroidal-thickness-in-unilateral-amblyopia-using-swept-source-optical-coherence-tomography
#2
Syunsuke Araki, Atsushi Miki, Katsutoshi Goto, Tsutomu Yamashita, Go Takizawa, Kazuko Haruishi, Yoshiaki Ieki, Junichi Kiryu, Kiyoshi Yaoeda
BACKGROUND: To investigate macular retinal and choroidal thickness in amblyopic eyes compared to that in fellow and normal eyes using swept-source optical coherence tomography (SS-OCT). METHODS: This study examined 31 patients with hyperopic anisometropic amblyopia (6.9 ± 3.8 years, mean ± standard deviation), 15 patients with strabismic amblyopia without anisometropia (7.9 ± 4.2 years), and 24 age-matched controls (7.8 ± 3.3 years). Retinal and choroidal thickness was measured by 3D scans using SS-OCT...
September 15, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28913513/choroidal-thickness-in-non-ocular-beh%C3%A3-et-s-disease-a-spectral-domain-oct-study
#3
Aman Mittal, Swetha Bindu Velaga, Khalil Ghasemi Falavarjani, Muneeswar G Nittala, Srinivas R Sadda
PURPOSE: To evaluate choroidal thickness in patients with non-ocular Behçet's disease (BD) using spectral domain optical coherence tomography (SD-OCT) and to compare the results to normal eyes. METHODS: In this retrospective observational comparative study, we collected OCT and clinical data from the charts of 4 patients (7 eyes) with BD who had been referred for a screening eye exam and had a normal ocular examination. Data from 9 healthy volunteers (17 eyes) were collected as age-matched controls...
September 2017: Journal of Current Ophthalmology
https://www.readbyqxmd.com/read/28910571/factors-that-influence-tear-meniscus-area-and-conjunctivochalasis-the-singapore-indian-eye-study
#4
Stanley Poh, Ryan Lee, Jennifer Gao, Carin Tan, Preeti Gupta, Charumathi Sabanayagam, Ching-Yu Cheng, Tien-Yin Wong, Louis Tong
PURPOSE: Assessment of tear film and conjunctiva is critical to define presence and severity of ocular surface disease. We aimed to characterize tear meniscus area (TMA) and conjunctivochalasis by anterior segment optical coherence tomography (ASOCT) in population-based patients and identify potential factors associated with low TMA and severe conjunctivochalasis. METHODS: Study subjects were enrolled from The Singapore Indian Eye Study, a population-based study of Asian Indian in Singapore...
September 14, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28910426/optical-coherence-tomography-angiography-features-of-iris-racemose-hemangioma-in-4-cases
#5
Jason L Chien, Kareem Sioufi, Sandor Ferenczy, Emil Anthony T Say, Carol L Shields
Importance: Optical coherence tomography angiography (OCTA) allows visualization of iris racemose hemangioma course and its relation to the normal iris microvasculature. Objective: To describe OCTA features of iris racemose hemangioma. Design, Setting, and Participants: Descriptive, noncomparative case series at a tertiary referral center (Ocular Oncology Service of Wills Eye Hospital). Patients diagnosed with unilateral iris racemose hemangioma were included in the study...
September 14, 2017: JAMA Ophthalmology
https://www.readbyqxmd.com/read/28910157/photochemical-cross-linking-for-penetrating-corneal-wound-closure-in-enucleated-porcine-eyes
#6
Ti Wang, Lu Zhu, Yinbo Peng, Nianci Shen, Yan Yu, Min Yao, Jingyin Zhu
PURPOSE: To compare the efficacy of photochemical-induced tissue cross-linking (PCL), utilizing Rose Bengal (RB) and 532 nm green light irradiation (RB-PCL), with standard sutures for closure of penetrating corneal incision in porcine cadaver eyes. METHODS: A full-thickness penetrating incision, 3 mm in length parallel to the limbus and perpendicular to the corneal surface, was made in the enucleated porcine cornea. Photochemical cross-linking was performed with tropical RB application and irradiation of 532 nm green light (0...
September 14, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28902016/raman-microscopy-a-noninvasive-method-to-visualize-the-localizations-of-biomolecules-in-the-cornea
#7
Yuichi Kaji, Toshihiro Akiyama, Hiroki Segawa, Tetsuro Oshika, Hideaki Kano
PURPOSE: In vivo and in situ visualization of biomolecules without pretreatment will be important for diagnosis and treatment of ocular disorders in the future. Recently, multiphoton microscopy, based on the nonlinear interactions between molecules and photons, has been applied to reveal the localizations of various molecules in tissues. We aimed to use multimodal multiphoton microscopy to visualize the localizations of specific biomolecules in rat corneas. METHODS: Multiphoton images of the corneas were obtained from nonlinear signals of coherent anti-Stokes Raman scattering, third-order sum frequency generation, and second-harmonic generation...
September 7, 2017: Cornea
https://www.readbyqxmd.com/read/28900607/de-novo-intraocular-amyloid-deposition-after-hepatic-transplantation-in-familial-amyloidotic-polyneuropathy
#8
Ivo Filipe Gama, Leonor Duarte Almeida
The familiar amyloid polyneuropathy (FAP) is a rare autosomal-dominant systemic amyloidosis. Amyloid deposition occurs more frequently and extensively in the vitq. The increase in intraocular pressure (IOP) is a result of deposition of transthyretin (TTR) in trabecular meshwork. Rarely, the amyloid deposition in anterior segment can be more exuberant than in posterior segment. A 42 years old man, with FAP (Val30Met mutation), liver transplantation in 1997. He was asymptomatic, without any significant ocular abnormality until 2011...
August 24, 2017: World Journal of Transplantation
https://www.readbyqxmd.com/read/28885667/variations-in-retinal-nerve-fiber-layer-measurements-on-optical-coherence-tomography-after-implantation-of-trifocal-intraocular-lens
#9
Javier García-Bella, José M Martínez de la Casa, Paula Talavero González, José I Fernández-Vigo Escribano, Laura Valcarce Rial, Julián García-Feijóo
PURPOSE: To establish the changes produced after implantation of a trifocal intraocular lens (IOL) on retinal nerve fiber layer measurements performed with Fourier-domain optical coherence tomography (OCT). METHODS: This prospective study included 100 eyes of 50 patients with bilateral cataract in surgical range, no other associated ocular involvement, refractive errors between +5 and -5 spherical diopters, and less than 1.5 D of corneal astigmatism. The eyes were operated by phacoemulsification with implantation of 2 different trifocal IOLs (FineVision and AT LISA tri 839MP) in randomized equal groups...
September 5, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28885362/the-protective-efficacy-and-safety-of-bandage-contact-lenses-in-children-aged-5-to-11-after-frontalis-muscle-flap-suspension-for-congenital-blepharoptosis-a-single-center-randomized-controlled-trial
#10
Lin Chen, Lianhong Pi, Ning Ke, Xinke Chen, Qing Liu
BACKGROUND: Postoperative complications, lagophthalmos and exposure keratopathy sometimes occur after surgery for congenital blepharoptosis. Bandage contact lenses (BCL) can help prevent some ocular surface disorders. The study aims to evaluate the efficacy and safety of BCL for protection of the ocular surface in children aged 5 to 11 years after frontalis muscle flap suspension for congenital blepharoptosis. METHODS: We conducted a prospective randomized clinical study of 30 eyes of 30 patients with congenital blepharoptosis consecutively enrolled at the Ophthalmology Ward of the Children's Hospital of Chongqing Medical University, China from September 1, 2016, to February 30, 2017...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28882597/the-acute-and-chronic-effects-of-intravitreal-anti-vascular-endothelial-growth-factor-injections-on-intraocular-pressure-a-review
#11
REVIEW
Peter Bracha, Nicholas A Moore, Thomas A Ciulla, Darrell WuDunn, Louis B Cantor
The acute and chronic effects of repeated intravitreal anti-vascular endothelial growth factor (VEGF) injections on intraocular pressure (IOP) have not been fully characterized and the development of sustained ocular hypertension could adversely affect patients who are at risk of glaucomatous optic neuropathy. As expected, volume-driven, acute ocular hypertension immediately follows intravitreal injection, but this pressure elevation is generally transient and well-tolerated. Several medications have been investigated to limit acute ocular hypertension following anti-VEGF therapy, but the benefits of pretreatment are not conclusive...
September 4, 2017: Survey of Ophthalmology
https://www.readbyqxmd.com/read/28871668/retina-and-nerve-fiber-layer-thickness-in-eyes-with-thyroid-associated-ophthalmopathy
#12
Sharon Blum Meirovitch, Igal Leibovitch, Anat Kesler, David Varssano, Amir Rosenblatt, Meira Neudorfer
BACKGROUND: Thyroid-associated ophthalmopathy (TAO) is an inflammatory disease that affects the thyroid gland and the eye orbit. Of patients with TAO, 3%-5% have severe sight-threatening disease due to optic neuropathy Optical coherence tomography (OCT), the non-invasive imaging technology that yields high-resolution cross-sectional images of the retina, provides qualitative and quantitative data on the retina. OBJECTIVES: To apply this technique to quantitatively assess retinal nerve fiber layer (RNFL) and macular ring thicknesses in healthy subjects and in patients with TAO to determine their relationship to the severity of the orbital disease...
May 2017: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/28868033/sturge-weber-syndrome-associated-with-monolateral-ocular-melanocytosis-iris-mammillations-and-diffuse-choroidal-haemangioma
#13
Andrea Maria Plateroti, Rocco Plateroti, Roberto Mollo, Aloisa Librando, Maria Teresa Contestabile, Vito Fenicia
We present the case of a 12-year-old boy with Sturge-Weber syndrome and ocular melanocytosis who presented with bilateral naevus flammeus of the face and hyperpigmentation of the right iris associated with ipsilateral iris mammillations. The patient had glaucoma and a diffuse choroidal haemangioma of the right eye. Optical coherence tomography of the anterior segment confirmed iris hyper-pigmentation and did not show abnormalities of the chamber angle structures. B-scan ultrasonography and enhanced depth imaging optical coherence tomography were performed and showed a marked difference in thickness and reflectance between the right and left choroid...
May 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28868031/optical-coherence-tomography-angiography-employing-a-novel-technique-for-investigation-in-vogt-koyanagi-harada-disease
#14
Panagiotis Giannakouras, Konstantinos Andreanos, Barbara Giavi, Andreas Diagourtas
PURPOSE: To report a case of Vogt-Koyanagi-Harada (VKH) disease and describe the imaging findings by means of optical coherence tomography angiography (OCTA). METHODS: Medical and ophthalmological history, ophthalmological examination, laboratory evaluation, B-scan ultrasonography, fluorescein and indocyanine angiography, and optical coherence tomography (OCT) were performed at baseline, as well as OCTA. RESULTS: A 50-year-old healthy female presented with decreased vision in both eyes...
May 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28868019/cystoid-macular-edema-during-treatment-with-paclitaxel-and-bevacizumab-in-a-patient-with-metastatic-breast-cancer-a-case-report-and-literature-review
#15
Takamichi Yokoe, Ippei Fukada, Kokoro Kobayashi, Tomoko Shibayama, Yumi Miyagi, Atsushi Yoshida, Takuji Iwase, Shinji Ohno, Yoshinori Ito
We present a case of a metastatic breast cancer patient with cystoid macular edema (CME) occurring during treatment with paclitaxel and bevacizumab. She had a history of neoadjuvant chemotherapy and partial mastectomy plus axillary lymph node dissection for stage IIB left-breast cancer. Twenty-four months later, she was diagnosed with multiple bone metastases and underwent chemotherapy with paclitaxel and bevacizumab. Thirty-three months after the initiation of the chemotherapy, she noticed bilateral blurred vision...
May 2017: Case Reports in Oncology
https://www.readbyqxmd.com/read/28867515/morphometric-parameters-of-the-optic-disc-in-normal-and-glaucomatous-eyes-based-on-time-domain-optical-coherence-tomography-image-analysis
#16
Dovilė Buteikienė, Asta Kybartaitė-Žilienė, Loresa Kriaučiūnienė, Valerijus Barzdžiukas, Ingrida Janulevičienė, Alvydas Paunksnis
BACKGROUND AND OBJECTIVE: Assessment of optic disc morphology is essential in diagnosis and management of visual impairment. The aim of this study was to evaluate associations between optic disc morphometric parameters, i.e., size and shape, and age, gender, and ocular axial length in normal and glaucomatous eyes based on time-domain optical coherence tomography image analysis. MATERIALS AND METHODS: It was a case-control study of 998 normal and 394 eyes with primary open angle glaucoma that underwent an ophthalmological examination and time-domain optical coherence topography scanning...
July 18, 2017: Medicina
https://www.readbyqxmd.com/read/28863141/assessment-of-tilt-and-decentration-of-crystalline-lens-and-intraocular-lens-relative-to-the-corneal-topographic-axis-using-anterior-segment-optical-coherence-tomography
#17
Shuhei Kimura, Yuki Morizane, Yusuke Shiode, Masayuki Hirano, Shinichiro Doi, Shinji Toshima, Atsushi Fujiwara, Fumio Shiraga
PURPOSE: To investigate the tilt and decentration of the crystalline lens and the intraocular lens (IOL) relative to the corneal topographic axis using anterior segment ocular coherence tomography (AS-OCT). METHODS: A sample set of 100 eyes from 49 subjects (41 eyes with crystalline lenses and 59 eyes with IOLs) were imaged using second generation AS-OCT (CASIA2, TOMEY) in June and July 2016 at Okayama University. Both mydriatic and non-mydriatic images were obtained, and the tilt and decentration of the crystalline lens and the IOL were quantified...
2017: PloS One
https://www.readbyqxmd.com/read/28855198/diagnostic-accuracy-of-optical-coherence-tomography-for-diagnosing-glaucoma-secondary-analyses-of-the-gate-study
#18
Gianni Virgili, Manuele Michelessi, Jonathan Cook, Charles Boachie, Jennifer Burr, Katie Banister, David F Garway-Heath, Rupert R A Bourne, Almudena Asorey Garcia, Craig R Ramsay, Augusto Azuara-Blanco
BACKGROUND/AIMS: To assess the diagnostic performance of retinal nerve fibre layer (RNFL) data of optical coherence tomography (OCT) for detecting glaucoma. METHODS: Secondary analyses of a prospective, multicentre diagnostic study (Glaucoma Automated Tests Evaluation (GATE)) referred to hospital eye services in the UK were conducted. We included data from 899 of 966 participants referred to hospital eye services with suspected glaucoma or ocular hypertension. We used both eyes' data and logistic regression-based receiver operator characteristics analysis to build a set of models to measure the sensitivity and specificity of the average and inferior quadrant RNFL thickness data of OCT...
August 30, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28853535/intravitreal-dexamethasone-implant-as-an-adjunct-weapon-for-severe-and-refractory-uveitis-in-beh%C3%A3-et-s-disease
#19
Claudia Fabiani, Giacomo Emmi, Giuseppe Lopalco, Lorenzo Vannozzi, Daniela Bacherini, Silvana Guerriero, Rossella Franceschini, Bruno Frediani, Florenzo Iannone, Gian Marco Tosi, Donato Rigante, Luca Cantarini
BACKGROUND: The evidence on the use of dexamethasone implants in the treatment of Behçet's disease (BD)-related uveitis is limited to a few cases. OBJECTIVES: To evaluate the efficacy of dexamethasone implants on ocular functional, morphological, and clinical parameters in BD patients with severe refractory uveitis. METHODS: Five eyes from five BD patients were enrolled. A single intravitreal dexamethasone injection was applied to each eye...
July 2017: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/28851322/portable-oct-assisted-surgical-treatment-of-intracorneal-pre-descemet-epithelial-cyst-a-case-report
#20
Sang Woo Kim, Eung Kweon Kim
BACKGROUND: Intracorneal epithelial cysts are a rare clinical condition that can occur anywhere in the corneal tissue; however, they appear most commonly in the stroma. They are sometimes challenging to treat because of their location, depth, and visual outcomes. Herein, we report a pre-Descemet epithelial cyst that was successfully treated surgically, with guidance from Fourier-domain optical coherence tomography (FD-OCT). CASE PRESENTATION: This interventional case report presents a patient with gradually decreasing vision caused by a pre-Descemet epithelial cyst...
August 29, 2017: BMC Ophthalmology
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