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Seminars in Ophthalmology

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https://www.readbyqxmd.com/read/29388866/diagnostic-electron-microscopy-of-retina
#1
Rishikesh Kumar Gupta, Inderjeet Kaur, Tapas C Nag, Jay Chhablani
The electron microscopy techniques were used in various fields as an analytical technique under in vitro conditions, which provides the sufficient resolution for better visualization and interpretation. This review gives a brief overview of the analytical application of transmission electron microscopy (TEM) and scanning electron microscopy (SEM) techniques and critical findings in different retinal pathologies. This review article aims to improvise understanding of retinal microstructures for clinicians which will help to improve the interpretation of the current advanced imaging techniques...
February 1, 2018: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/29341800/factors-associated-with-patient-satisfaction-in-an-outpatient-glaucoma-population
#2
Kamran Rahmatnejad, Jonathan S Myers, Megan E Falls, Sarah R Myers, Michael Waisbourd, Lisa A Hark
PURPOSE: To determine what metrics might impact satisfaction survey responses. METHODS: A 37-question survey was administered to 249 participants. Responses were correlated to demographics, clinical factors, weather conditions, and examination timing. RESULTS: Sample consists of 55.4% female and 73.9% white, and mean age was 65.1 years. Participants were assigned to: completely satisfied (77.9%) or not completely satisfied (22.1%) groups based on their rating of glaucoma specialist on a scale of 1-10, while 10 considered "completely satisfied" and less than 10 "not completely satisfied...
January 17, 2018: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/29336641/impact-of-forward-and-backward-scattering-and-corneal-higher-order-aberrations-on-visual-acuity-after-penetrating-keratoplasty
#3
Hidenaga Kobashi, Kazutaka Kamiya, Kimiya Shimizu
PURPOSE: To assess the relationship of forward and backward scattering and corneal higher-order aberrations (HOAs) with corrected distance visual acuity (CDVA) after penetrating keratoplasty (PK). METHODS: This retrospective study comprised 25 eyes of 25 consecutive patients who underwent PK using the VisuMax femtosecond laser system and age-matched 25 eyes of 25 healthy subjects. We quantitatively assessed objective scattering index (OSI) using the double-pass instrument (OQAS II, Visiometrics), corneal densitometry (CD) and corneal HOAs with the Scheimpflug rotating camera (Pentacam HR, Oculus) 1 year postoperatively...
January 16, 2018: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/29308970/clinical-characteristics-of-17-patients-with-moraxella-keratitis
#4
Yui Tobimatsu, Noriko Inada, Jun Shoji, Satoru Yamagami
PURPOSE: To retrospectively investigate the clinical characteristics of Moraxella keratitis. PATIENTS AND METHODS: We reviewed the medical records of 17 patients with Moraxella keratitis. Onset age, sex, predisposing factors, initial clinical presentations, culture and antimicrobial susceptibility testing, and management and outcome of medical treatment were investigated. RESULT: Moraxella keratitis was more common in patients older than 40 years of age, and its representative initial presentation was a round-shaped ulcer with endothelial plaque (70...
January 8, 2018: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/29283293/resource-planning-in-glaucoma-a-tool-to-evaluate-glaucoma-service-capacity
#5
Ruchika Batra, Hannah E Sharma, Ibrahim Elaraoud, Shabbir Mohamed
BACKGROUND: The National Patient Safety Agency (2009) publication advising timely follow-up of patients with established glaucoma followed several reported instances of visual loss due to postponed appointments and patients lost to follow-up. The Royal College of Ophthalmologists Quality Standards Development Group stated that all hospital appointments should occur within 15% of the intended follow-up period. AIM: To determine whether: 1. Glaucoma follow-up appointments at a teaching hospital occur within the requested time 2...
December 28, 2017: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/29278975/oxidant-antioxidant-balance-in-the-aqueous-humor-of-patients-with-retinal-vein-occlusion
#6
Muhammed Altinisik, Arif Koytak, Ahmet Elbay, Enes Toklu, Taha Sezer, Abdurrahim Kocyigit
PURPOSE: To analyze oxidative stress parameters in the aqueous humor with retinal vein occlusion. MATERIALS AND METHODS: A total of 56 patients who underwent cataract surgery were enrolled in this study. The eyes with retinal vein occlusion were included in the study group. Aqueous humor was sampled from all patients and analyzed by an automated measurement method. Total oxidant status (TOS), total antioxidant status (TAS), and oxidative stres index (OSI) were calculated...
December 26, 2017: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/29278973/changes-in-choroidal-thickness-after-cataract-surgery
#7
Asmaa Mohamed Ibrahim, Sameh Mohamed Elgouhary, Moustafa Kamal Nassar, Ahmed Helmy El Batanony
OBJECTIVE: The aim of this study is to compare subfoveal choroidal thickness (SFCT) before and after uneventful phacoemulsification using enhanced depth imaging optical coherence tomography (EDI-OCT). BACKGROUND: Cataract is a major cause of visual impairment in the elderly. Cataract surgery is the most common ophthalmic surgery and is performed simultaneously with glaucoma or vitreous surgery in many cases. However, according to the results in epidemiology studies, cataract surgery is associated with the onset of age-related macular degeneration (AMD) and cataract surgery increases visual acuity in these patients without an increased risk of progression to exudative AMD...
December 26, 2017: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/29278961/comparison-of-the-clinical-efficacy-of-abobotulinumtoxin-a-abo-and-onabotulinumtoxin-a-ona-in-the-treatment-of-crow-s-feet-wrinkles-a-split-face-study
#8
Ahmed Shafik Elridy, Rania Gamal Eldin Zaki, Reham Fawzy Elshinawy
PURPOSE: Comparing the clinical efficacy of Abobotulinumtoxin A (ABO) and Onabotulinumtoxin A(ONA) using a dosing ratio of 2.5U:1.0U in the treatment of crow's feet wrinkles. SUBJECTS AND METHODS: A single-blinded, randomized, split-face study, included 40 subjects, with moderate-to-severe crow's feet wrinkles. Patients were subjected to a dose equivalence of (ABO):(ONA); 2.5:1.0 U. Post treatment evaluation was done on 7, 30, and 120 days, comparing: Time, Duration, and Degree of Improvement; Patients Satisfaction...
December 26, 2017: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/29256766/impact-of-different-visual-field-instruction-strategies-on-reliability-indices
#9
Aparna Rao, Sarada Prasanna Sarangi, Debananda Padhy, Niranjan Raj, Gopinath Das
PURPOSE: To investigate and compare the visual field performance following three different types of visual field instruction strategies. METHOD: Ninety consecutive visual field-naïve glaucoma patients who can perform the test and understand instructions were imparted three forms of instructions prior to the visual field test. Patients with visual acuity <20/200, central corneal opacities, or anterior segment pathology and patients unable to understand general instructions/uncooperative were excluded...
December 19, 2017: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/29256738/retinal-layers-measurements-following-silicone-oil-tamponade-for-retinal-detachment-surgery
#10
Darija Jurišić, Mia Zorić Geber, Ivan Ćavar, Dobrila Karlica Utrobičić
This study aimed to investigate the influence of silicone oil on the retinal nerve fiber layer (RNFL) thickness in patients with primary rhegmatogenous retinal detachment who underwent vitreoretinal surgery. The study included 47 patients (eyes), who underwent a pars plana vitrectomy with the silicone oil tamponade. The control group included unoperated eye of all participants. Spectral-domain optical coherence tomography (SD-OCT) was used for the measurements of peripapilar and macular RNFL thickness. The average peripapillary RNFL thickness was significantly higher in the silicone oil filled eyes during endotamponade and after its removal...
December 19, 2017: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/29256717/endophthalmitis-progressing-to-panophthalmitis-clinical-features-demographic-profile-and-factors-predicting-outcome
#11
Rajeev R Pappuru, Vivek Pravin Dave, Avinash Pathengay, Sankeert Gangakhedkar, Savitri Sharma, Raja Narayanan, Mudit Tyagi, Andrzej Grzybowski, Taraprasad Das
PURPOSE: To describe clinical features, demographic profile and factors predicting outcome of endophthalmitis under care progressing to panophthalmitis at a tertiary eye institute. SETTING: Retrospective consecutive case series. METHODS: All cases diagnosed as endophthalmitis of any etiology and undergoing treatment which progressed to panophthalmitis from January 2005 to December 2015 were included. Case records of all patients coded as endophthalmitis and then panophthalmitis were included...
December 19, 2017: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/29252091/half-fluence-photodynamic-therapy-for-chronic-central-serous-chorioretinopathy-predisposing-factors-for-visual-acuity-outcomes
#12
Veronika Matušková, Daniela Vysloužilová, Michal Uher
BACKGROUND: Central serous chorioretinopathy (CSC) is characterised by a serous detachment of the neurosensory retina in the macula. Chronic CSC tends to affect older individuals with a less favourable visual outcome. Photodynamic therapy (PDT) with verteporfin is a possible therapeutic approach in cases of CSC with no tendency for spontaneous resorption. PDT has shown good anatomic and functional results in treating chronic CSC. For the purpose of diminishing side effects, modifications of the standard protocol were used...
December 18, 2017: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/29252070/variations-in-choroidal-and-macular-thickness-maps-after-uneventful-phacoemulsification
#13
Mona Kamal Abdellatif, Weam Mohamed Ebeid
OBJECTIVE: To investigate changes in retinal and choroidal thickness maps following uncomplicated phacoemulsification using enhanced depth imaging optical coherence tomography (EDI-OCT). METHODS: A prospective study was done on 66 eyes. EDI-OCT was performed preoperative, 1 week, 1 month, and 3 months postoperative measuring retinal and choroidal thickness at the fovea and the 9 ETDRS subfields. RESULTS: Subfoveal choroidal thickness (SFCT) showed statistically insignificant increase after 1 week (‎‎P = 0...
December 18, 2017: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/29215958/postoperative-complications-of-pars-plana-vitrectomy-for-diabetic-retinal-disease
#14
Gary L Yau, Paolo S Silva, Paul G Arrigg, Jennifer K Sun
Despite recent advances in the medical management of diabetic retinal disease, there remain established indications for vitreoretinal surgery in the treatment of severe proliferative diabetic retinopathy. These include non-clearing vitreous hemorrhage and tractional retinal detachment. Advances in surgical instrumentation, technique, and experience have led to improved visual outcomes, as well as a corresponding decrease in the incidence of postoperative complications. However, the presence of systemic and ocular factors in diabetic patients increases the risk of adverse events compared to non-diabetic individuals...
December 7, 2017: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/29211548/aqueous-drainage-device-erosion-a-review-of-rates-risks-prevention-and-repair
#15
Upneet Bains, Ambika Hoguet
Aqueous drainage device tube erosions require prompt intervention to prevent endophthalmitis. As the use of drainage devices in glaucoma surgery continues to increase, recognizing and managing tube erosions is a pertinent issue. This review provides a comprehensive overview of tube erosions, including the rates of erosion with various types of patch grafts, the risk factors associated with erosion, and approaches to repair in order to counsel and treat our patients to prevent endophthalmitis.
December 6, 2017: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/29193991/diplopia-after-strabismus-surgery
#16
Medha Sharma, David G Hunter
Diplopia is a disappointing and, at times, unanticipated consequence of what might otherwise be considered anatomically successful strabismus surgery. In this study, we review the existing literature regarding diplopia after strabismus surgery in the context of the senior author's experience. We divide postoperative diplopia types into cases that occur in the setting of normal binocular vision (or "normal" suppression) vs. cases that are the consequence of rare or anomalous sensorial adaptations. We then discuss how to identify patients at greatest risk based on history and preoperative testing, and we offer strategies for managing these sometimes-challenging cases...
December 1, 2017: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/29185844/postoperative-complications-of-scleral-buckling
#17
Thanos D Papakostas, Demetrios Vavvas
Scleral buckling has an important role in the repair of certain categories of rhegmatogenous retinal detachments. These include detachments in young phakic patients, detachments associated with dialysis, and also in conjuction with vitrectomy in patients who have sustained trauma or have developed proliferative vitreoretinopathy. However, it can be associated with significant postoperative complications. The most important ones are refractive change, intrusion or extrusion, infection, globe ischemia, and choroidal detachments, amongst others...
November 29, 2017: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/29185838/cataract-surgery-complications-in-uveitis-patients-a-review-article
#18
Stephanie M Llop, George N Papaliodis
Uveitis is a leading causes of blindness worldwide, and the development of cataracts is common due to both the presence of intraocular inflammation and the most commonly employed treatment with corticosteroids. The management of these cataracts can be very challenging and often requires additional procedures that can compromise surgical results. The underlying disease affects a relatively young population at higher risk of complications. Preoperative control of inflammation/quiescent disease for at least three months is generally accepted as the minimum amount of time prior to surgical intervention...
November 29, 2017: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/29185835/biometric-differences-between-unilateral-chronic-primary-angle-closure-glaucoma-and-fellow-non-glaucomatous-eyes
#19
Wei Wang, Xinyi Li, Shida Chen, Wenbin Huang, Xiulan Zhang
PURPOSE: To compare biometric differences between eyes with unilateral chronic primary angle-closure glaucoma (PACG) and fellow non-glaucomatous eyes in the same patient. METHODS: Clinical data and imaging records of 17 patients with unilateral PACG were retrospectively reviewed. The fellow eyes with primary angle-closure (PAC) or primary angle-closure suspected (PACS) were grouped in Group 1. The PACG eyes were set as Group 2. The biometric parameters of both eyes were measured by IOL-Master, anterior segment optical coherence tomography (AS-OCT), and swept source OCT...
November 29, 2017: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/29420144/complications-of-optic-nerve-sheath-fenestration-as-a-treatment-for-idiopathic-intracranial-hypertension
#20
Aubrey L Gilbert, Bart Chwalisz, Robert Mallery
There are a number of surgical options for treatment of idiopathic intracranial hypertension (IIH) when it is refractory to medical treatment and weight loss. Optic nerve sheath fenestration (ONSF) is one of these options. Use of this procedure varies among centers due to experience with the procedure and concern for associated complications that can result in severe loss of vision. This review summarizes the literature concerning post-surgical complications of ONSF for IIH.
2018: Seminars in Ophthalmology
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