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https://www.readbyqxmd.com/read/28632847/pattern-recognition-analysis-of-age-related-retinal-ganglion-cell-signatures-in-the-human-eye
#1
Nayuta Yoshioka, Barbara Zangerl, Lisa Nivison-Smith, Sieu K Khuu, Bryan W Jones, Rebecca L Pfeiffer, Robert E Marc, Michael Kalloniatis
Purpose: To characterize macular ganglion cell layer (GCL) changes with age and provide a framework to assess changes in ocular disease. This study used data clustering to analyze macular GCL patterns from optical coherence tomography (OCT) in a large cohort of subjects without ocular disease. Methods: Single eyes of 201 patients evaluated at the Centre for Eye Health (Sydney, Australia) were retrospectively enrolled (age range, 20-85); 8 × 8 grid locations obtained from Spectralis OCT macular scans were analyzed with unsupervised classification into statistically separable classes sharing common GCL thickness and change with age...
June 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28630947/evolution-of-geographic-atrophy-in-participants-treated-with-ranibizumab-for-neovascular-age-related-macular-degeneration
#2
Alisa T Thavikulwat, Naima Jacobs-El, Jane S Kim, Elvira Agrón, Jesia Hasan, Catherine B Meyerle, David Valent, Catherine A Cukras, Henry E Wiley, Wai T Wong, Emily Y Chew
PURPOSE: To evaluate the risk factors, incidence, and rate of progression of geographic atrophy (GA) in eyes with neovascular age-related macular degeneration (nAMD) treated with ranibizumab. DESIGN: Post-hoc analysis of a prospective clinical study. PARTICIPANTS: 69 participants with nAMD in at least one eye. METHODS: Participants were prospectively treated in the study eye with 0.5 mg intravitreal ranibizumab. Study eyes received 4 monthly injections followed by pro re nata injections until a fluid-free macula was achieved on optical coherence tomography...
January 2017: Ophthalmology retina
https://www.readbyqxmd.com/read/28625971/peripheral-leptochoroid-clinical-and-anatomical-findings
#3
Jasmine H Francis, Larissa A Habib, David H Abramson
BACKGROUND/AIMS: To investigate the clinical findings and anatomical characteristics of patients with a thinned peripheral choroid (leptochoroid) presenting with bilateral macular geographical hyperpigmented fundus and compare with matched controls. METHODS: A retrospective, observational case series of 44 eyes (24 patients): 22 study eyes (12 study patients) with clinical findings of leptochoroid (geographical hyperpigmented fundus centred in the macula) matched with 22 control eyes (12 control patients)...
June 16, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28616716/retinal-microstructures-are-altered-in-patients-with-idiopathic-infantile-nystagmus
#4
Jinu Han, Taekjune Lee, Jong Bok Lee, Sueng-Han Han
PURPOSE: To compare segmented retinal layer thicknesses between patients with idiopathic infantile nystagmus (IIN) and controls. METHODS: This retrospective case-control study included 66 patients with IIN and 66 age-matched controls. The retinal layers were examined using spectral domain optical coherence tomography with autosegmentation. Central foveal thickness (CFT), outer nuclear layer (ONL), and outer segment length (OSL) thickness were measured at the fovea center...
June 14, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28614218/usefulness-of-frequency-doubling-technology-perimetry-24-2-in-glaucoma-with-parafoveal-scotoma
#5
Kyoung In Jung, Eun Kyoung Kim, Chan Kee Park
The standard automated perimetry (SAP) 24-2 test cannot adequately test the paracentral region because test points are located sparsely in macular area where is crowded with retinal ganglion cells (RGCs), even though paracentral scotoma is clinically related to a risk of losing visual function. More sensitive visual field (VF) tests are needed to assess paracentral VF defects precisely. We investigated the structure-function relationship on the SAP 10-2 test and the frequency doubling technology (FDT) 24-2 test as well as the SAP 24-2 test in glaucoma with parafoveal scotoma (PFS)...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28614138/acute-exudative-paraneoplastic-polymorphous-vitelliform-maculopathy-during-vemurafenib-and-pembrolizumab-treatment-for-metastatic-melanoma
#6
Harpal S Sandhu, Anton M Kolomeyer, Marisa K Lau, Carol L Shields, Lynn M Schuchter, Charles W Nichols, Tomas S Aleman
PURPOSE: To describe a patient with BRAF mutation-positive cutaneous melanoma who developed acute exudative polymorphous vitelliform maculopathy during vemurafenib and pembrolizumab treatment for metastatic melanoma. METHODS: Retrospective case report documented with wide-field fundus imaging, spectral domain optical coherence tomography, and fundus autofluorescence imaging. RESULTS: A 55-year-old woman with bilateral ductal breast carcinoma and BRAF mutation-positive metastatic cutaneous melanoma complained of bilateral blurred vision within 5 days of starting vemurafenib (BRAF inhibitor)...
June 13, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28614137/swept-source-optical-coherence-tomography-angiography-in-rickettsial-retinitis
#7
Rim Kahloun, Bechir Jelliti, Imen Ksiaa, Hager Ben Amor, Sonia Zaouali, Marco Lupidi, Salim Ben Yahia, Moncef Khairallah
PURPOSE: To report optical coherence tomography angiography findings in a patient with rickettsial retinitis. METHODS: A 29-year-old man complaining of acute blurring vision in the right eye associated with Rickettsia conorii infection underwent a comprehensive ocular examination, fluorescein angiography, spectral-domain optical coherence tomography, and swept-source optical coherence tomography angiography. RESULTS: Funduscopy showed two large areas of retinitis in the inferior macula along the distribution of the inferotemporal artery with associated retinal hemorrhages, retinal edema, and serous retinal detachment...
June 13, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28613355/imaging-characteristics-and-natural-history-of-macular-pseudo-folds-mimicking-full-thickness-postoperative-macular-folds-following-retinal-detachment-repair
#8
Jiwei Sheng, Joshua D Levinson, Gayatri Reilly, Marena Patronas, Michael M Lai
BACKGROUND AND OBJECTIVES: Postoperative retinal folds are a rare complication of retinal detachment repair. Folds involving the macula may result in decreased vision, metamorphopsia, and diplopia. There is no consensus on whether symptomatic folds require additional surgery, as both spontaneous regression and permanent vision loss have been described. The authors present three cases of symptomatic macular folds that demonstrated spontaneous resolution and identify key OCT prognostic signs...
June 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28613354/the-quantitative-measurements-of-vascular-density-and-flow-areas-of-macula-using-optical-coherence-tomography-angiography-in-normal-volunteers
#9
Fariba Ghassemi, Kaveh Fadakar, Fatemeh Bazvand, Reza Mirshahi, Masoumeh Mohebbi, Siamak Sabour
BACKGROUND AND OBJECTIVE: The quantification of the density of macular vascular networks and blood flow areas in the foveal and parafoveal area in healthy subjects using optical coherence tomography angiography (OCTA). PATIENTS AND METHODS: Cross-sectional, prospective study in an institutional setting at the Retina Services of Farabi Eye Hospital. One hundred twelve normal volunteers with no known ocular or systemic disease were included, including patient numbers (one or both eyes), selection procedures, inclusion/exclusion criteria, randomization procedure, and masking...
June 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28611649/a-case-of-diabetic-macular-edema-with-prominent-chorioretinal-folds
#10
Takaki Sato, Ryohsuke Kohmoto, Masanori Fukumoto, Seita Morishita, Daisaku Kimura, Kensuke Tajiri, Takatoshi Kobayashi, Teruyo Kida, Shota Kojima, Tsunehiko Ikeda
PURPOSE: To report a case of diabetic macular edema with prominent chorioretinal folds. CASE REPORT: This study involved a 55-year-old male with untreated bilateral diabetic retinopathy who had undergone cataract surgery at another clinic. Following that surgery, diabetic macular edema rapidly exacerbated, accentuating marked cystoid macular edema and radial chorioretinal folds in the macula. Investigation of his medical history revealed that in addition to diabetes, he had uncontrolled hypertension and severe diabetic nephropathy...
January 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28611153/effects-of-short-term-mild-hypercapnia-during-head-down-tilt-on-intracranial-pressure-and-ocular-structures-in-healthy-human-subjects
#11
Steven S Laurie, Gianmarco Vizzeri, Giovanni Taibbi, Connor R Ferguson, Xiao Hu, Stuart M C Lee, Robert Ploutz-Snyder, Scott M Smith, Sara R Zwart, Michael B Stenger
Many astronauts experience ocular structural and functional changes during long-duration spaceflight, including choroidal folds, optic disc edema, globe flattening, optic nerve sheath diameter (ONSD) distension, retinal nerve fiber layer thickening, and decreased visual acuity. The leading hypothesis suggests that weightlessness-induced cephalad fluid shifts increase intracranial pressure (ICP), which contributes to the ocular structural changes, but elevated ambient CO2 levels on the International Space Station may also be a factor...
June 2017: Physiological Reports
https://www.readbyqxmd.com/read/28607127/role-of-the-primary-cilia-on-the-macula-densa-and-thick-ascending-limbs-in-regulation-of-sodium-excretion-and-hemodynamics
#12
Jiangping Song, Lei Wang, Fan Fan, Jin Wei, Jie Zhang, Yan Lu, Yiling Fu, Shaohui Wang, Luis A Juncos, Ruisheng Liu
We investigated the significance of the primary cilia on the macula densa and thick ascending limb (TAL) in regulation of renal hemodynamics, sodium excretion, and blood pressure in this study. A tissue-specific primary cilia knock-out (KO) mouse line was generated by crossing NKCC2-Cre mice with IFT88-Δ/flox mice (NKCC2(CRE); IFT88Δ(/flox)), in which the primary cilia were deleted from the macula densa and TAL. NO generation was measured with a fluorescent dye (4,5-diaminofluorescein diacetate) in isolated perfused juxtaglomerular apparatus...
June 12, 2017: Hypertension
https://www.readbyqxmd.com/read/28604324/cytomegalovirus-retinitis-in-cape-town-south-africa-clinical-management-and-outcomes
#13
Steven R J Lapere, James C Rice
BACKGROUND: Cytomegalovirus (CMV) retinitis is a vision-threatening opportunistic infection that occurs mainly in immunocompromised individuals. Limited data on treatment protocols and management outcomes are available in South Africa (SA). OBJECTIVES: To review the clinical presentation, management and outcomes of patients who were diagnosed and treated for CMV retinitis at Groote Schuur Hospital, Cape Town, SA, over a 10-year period, and to compare treatment protocols of 13 public hospitals in SA that treat patients for CMV retinitis...
May 24, 2017: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
https://www.readbyqxmd.com/read/28602014/correlation-between-morphological-changes-and-functional-outcomes-of-recent-onset-macula-off-rhegmatogenous-retinal-detachment-prognostic-factors-in-rhegmatogenous-retinal-detachment
#14
Murat Karacorlu, Isil Sayman Muslubas, Mumin Hocaoglu, Serra Arf, Mehmet Giray Ersoz
PURPOSE: To assess correlation between preoperative and postoperative findings and surgical factors, and postoperative functional outcomes after successful repair of acute macula-off rhegmatogenous retinal detachment (RRD). METHODS: Forty-four eyes of 44 patients with recent-onset macula-off RRD who had primary pars plana vitrectomy were included in this retrospective study. Best-corrected visual acuity (BCVA) and retinal and choroidal changes on spectral-domain optical coherence tomography (SD-OCT) were evaluated before and after surgery...
June 10, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28601911/repeatability-of-ganglion-cell-inner-plexiform-layer-thickness-measurements-using-spectral-domain-oct-in-branch-retinal-vein-occlusion
#15
Yeon Hee Lee, Min-Su Kim, Seung Il Ahn, Hye Jin Park, Kyung Sup Shin, Jung-Yeul Kim
PURPOSE: To analyze the repeatability of thickness measurements of the central macula, ganglion cell-inner plexiform layer (GC-IPL), and retinal nerve fiber layer (RNFL) using spectral-domain optical coherence tomography (SD-OCT) before and after treatment of macular edema in branch retinal vein occlusion (BRVO). METHODS: We analyzed patients with BRVO who visited our retinal clinic. The repeatability of the thickness measurements were compared using the intraclass correlation coefficient (ICC) and coefficient of variation (COV) of affected versus normal fellow eyes...
June 11, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28599690/comparison-of-clinical-characteristics-of-rhegmatogenous-retinal-detachment-in-pseudophakic-and-phakic-eyes
#16
Muhammad Ahsan Mukhtar, Mohammad Asim Mehboob, Qamar Ul Islam, Mazhar Ishaq
OBJECTIVE: To compare the clinical profile, systemic risk factors, and characteristics of rhegmatogenous retinal detachment (RRD) in pseudophakic and phakic eyes. STUDY DESIGN: Cross-sectional comparative study. PLACE AND DURATION OF STUDY: Armed Forces Institute of Ophthalmology, Rawalpindi from August 2013 to August 2015. METHODOLOGY: A total of 164 eyes (96 pseudophakic patients and 68 phakic patients) with RRD were analyzed...
May 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28598867/pathophysiology-of-antenatal-bartter-s-syndrome
#17
Martin Kömhoff, Kamel Laghmani
PURPOSE OF REVIEW: Antenatal Bartter syndrome (aBS) is a heterogenous disease resulting from defective ion transport in the thick ascending limb of the loop of Henle. Novel insights into the pathophysiology, as well as the recent identification of a novel genetic cause of aBS, merit an update on this topic. RECENT FINDINGS: In aBS, severe salt losing is further aggravated by defective salt sensing in the macula densa, where a reduced tubular salt concentration is perceived and glomerular filtration is increased instead of decreased...
June 8, 2017: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/28590964/overview-of-the-complications-of-high-myopia
#18
Yasushi Ikuno
High myopia is very common and one of the major causes of social blindness, especially in East Asian countries. It is characterized by axial length elongation, and induces various specific complications, including cataract formation, retinal detachment from peripheral retinal tears, myopic foveoschisis, macular hole with or without retinal detachment, peripapillary deformation, dome-shaped macula, choroidal/scleral thinning, myopic choroidal neovascularization, and glaucoma. This article will review these complications and discuss the current concepts relating to these complications and their treatments...
January 24, 2017: Retina
https://www.readbyqxmd.com/read/28590962/longitudinal-changes-in-thicknesses-of-the-macula-ganglion-cell-inner-plexiform-layer-and-retinal-nerve-fiber-layer-after-vitrectomy-a-12-month-observational-study
#19
Hyung-Bin Lim, Min-Woo Lee, Baek-Soo Kwak, Young-Joon Jo, Jung-Yeul Kim
PURPOSE: To analyze longitudinal changes in the thicknesses of the macula, ganglion cell-inner plexiform layer (GC-IPL), and peripapillary retinal nerve fiber layer (RNFL) after vitrectomy. METHODS: Thirty-eight patients diagnosed with intraocular lens (IOL) dislocation without evidence of other vitreoretinal diseases were included. They underwent conventional vitrectomy and IOL transscleral fixation, with a follow-up of 12 months. Using spectral domain optical coherence tomography, the thicknesses of the macula, GC-IPL, and peripapillary RNFL in the vitrectomized and fellow control eyes were measured...
January 23, 2017: Retina
https://www.readbyqxmd.com/read/28590320/sticky-silicone-oil
#20
Hamouda Hamdi Ghoraba, Adel Galal Zaky, Haithem Mamoun Abd Al Fatah, Emad El Din Mohamed El Gemai, Mohamed Amin Heikal
OBJECTIVE: To report and analyze the phenomenon of sticky silicone oil on the retina at the time of its removal. BACKGROUND: Silicone oil has been used for more than 25 years as a long-term retinal tamponade in the surgical management of patients with complex retinal detachments. When a decision to remove silicone oil was made at the end of the tamponade period, the system involved a number of different materials: silicone oil, aqueous solution with or without remnants of perfluorocarbon liquid plus the material of the cannula used to aspirate Silicone oil...
October 31, 2016: Retina
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