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Posterior vitreous detachment

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https://www.readbyqxmd.com/read/28625955/experiment-of-vitreous-liquefaction-induced-by-c3f8
#1
Jing Wang, Qiuming Li
To investigate the effect and safety of vitreous liquefaction induced by C3F8 (an inert gas) injected into vitreous cavit of rabbit eyes. 24 rabbits (48 eyes) were randomly divided into four groups, named group A, group B, group C and group D, with 6 rabbits in each group. The right eye in each rabbit was taken as the experimental eye while the left as the control eye. The experimental eyes in group A were injected with 0.1mL disinfectant air; the experimental eyes in group B, group C and group D were all injected with C3F8 0...
January 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28620965/determination-of-retinal-surface-area
#2
Manbir Nagra, Bernard Gilmartin, Ngoc Jade Thai, Nicola S Logan
Previous attempts at determining retinal surface area and surface area of the whole eye have been based upon mathematical calculations derived from retinal photographs, schematic eyes and retinal biopsies of donor eyes. 3-dimensional (3-D) ocular magnetic resonance imaging (MRI) allows a more direct measurement, it can be used to image the eye in vivo, and there is no risk of tissue shrinkage. The primary purpose of this study is to compare, using T2-weighted 3D MRI, retinal surface areas for superior-temporal (ST), inferior-temporal (IT), superior-nasal (SN) and inferior-nasal (IN) retinal quadrants...
June 16, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28587882/combined-vitrectomy-and-glaucoma-drainage-device-implantation-surgical-approach-for-complex-pediatric-glaucomas
#3
Cem Ozgonul, Cagri G Besirli, Brenda L Bohnsack
PURPOSE: To evaluate efficacy of combined vitrectomy with posteriorly-placed glaucoma drainage device (GDD) in lowering intraocular pressure (IOP) in children. PATIENTS AND METHODS: Retrospective case review identified 20 children who underwent vitrectomy with posteriorly-placed GDD with minimal 6-months follow-up. First eye operated on was included. Success was defined as IOP 5-20 mmHg, no additional IOP-lowering surgery or visually-devastating complications. RESULTS: Patients with primary infantile-onset glaucoma (25%), traumatic glaucoma (15%), Peters anomaly (15%), microphthalmia (25%), glaucoma following cataract surgery (10%), microspherophakia (5%), and retinopathy of prematurity (5%) were included...
June 3, 2017: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/28578309/two-staged-en-bloc-excision-of-a-retinal-haemangioma
#4
Mahima Jhingan, Jay Chhablani, Komal Agarwal, Padmaja Kumari Rani
A 31-year-old man presented to us with diminution of vision in the right eye which he noticed since 10 days, with a visual acuity of hand motions only. On examination, festooned pupil and a complicated cataract were noted with no view of the retina. Ultrasonography of the right eye showed retinal detachment in all quadrants with suspected areas of traction and membranes in the vitreous. Left eye examination revealed a normal anterior and posterior segment. Intraoperatively, he underwent a pars plana lensectomy following which an inferior large retinal haemangioma was noted with dilated and tortuous feeder artery and draining vein...
June 3, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28540056/spontaneous-levitation-of-dropped-nucleus-on-first-post-operative-day
#5
Mayuresh P Naik, Harindersingh Sethi, Anuj Mehta, Abhinav Bhalla, Komal Saluja
A 60-year-old male patient presenting with gradual painless progressive diminution of vision was diagnosed with nuclear sclerosis grade III (LOCS). Intra-operatively, there was a nuclear drop into the vitreous cavity. The patient was left aphakic and was deferred for further vitreoretinal procedure the next day. On first post-op day, the nucleus fragment (of roughly the same size that had dropped into the vitreous) was seen in the anterior chamber. A gentle ultrasonography B-Scan done for posterior segment evaluation was anechoic...
2017: SAGE open medical case reports
https://www.readbyqxmd.com/read/28530080/-cataract-surgery-complications-in-males-treated-with-alpha-1-antagonists-for-benign-prostatic-hyperplasia
#6
REVIEW
Tamar Pedut Kloizman, Raneen Shehadeh Mashour
Intraoperative floppy iris syndrome (IFIS) was first described by Chang and Campbell in 2005. The characteristics of this syndrome include: 1. Floppy iris that billows in reaction to intraocular fluid currents during standard phacoemulsification procedure; 2. Flaccid iris stroma that tends to prolapse through well-constructed surgical incisions; 3. Insufficient pupillary mydriasis despite proper pharmacologic preparation and progressive pupillary constriction during the operation. Surgical procedures with IFIS have since been noted to have an exceptionally high rate of complications, some of which can be vision threatening...
September 2016: Harefuah
https://www.readbyqxmd.com/read/28513500/rescue-vitrectomy-with-blocked-artery-massage-and-bloodletting-for-branch-retinal-artery-occlusion
#7
Chun-Ju Lin, Cheng-Wen Su, Huan-Sheng Chen, Wen-Lu Chen, Jane-Ming Lin, Yi-Yu Tsai
A 61-year-old male suffered from sudden blurred vision and superior visual field defect oculus dexter. His vision was counting fingers at 20 cm. Fundoscopy demonstrated inferior pale retina and a large embolus located at the proximal inferior retinal artery. Branch retinal artery occlusion (BRAO) was diagnosed. Initial paracentesis, topical brimonidine tartrate, oral pentoxifylline, and hyperbaric oxygen therapy were performed but showed limited improvement. Hence, he received 25-gauge vitrectomy, artificial posterior vitreous detachment, blocked retinal artery massage, and bloodletting 5 days after onset...
April 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28508380/-optical-coherence-tomography-in-eyes-with-senile-retinoschisis-sd-oct-versus-ultrasound-examinations-and-assessment-of-the-vitreoretinal-interface
#8
A Bringewatt, S Burzer, N Feucht, M Maier
BACKGROUND: In addition to ocular ultrasonography (US), spectral domain optical coherence tomography (SD-OCT) is available in order to diagnose senile retinoschisis (sRS). SD-OCT also allows for classification of posterior vitreous detachment (PVD) in healthy eyes. OBJECTIVES: Reevaluation of the value and additional benefit of both imaging procedures. SD-OCT-based evaluation of PVD stages in sRS patients. MATERIALS AND METHODS: Diagnostic results of 33 eyes in 26 patients with clinical suspicion of sRS were retrospectively analysed...
May 15, 2017: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/28506223/case-of-asteroid-hyalosis-that-developed-severely-reduced-vision-after-cataract-surgery
#9
Ryosuke Ochi, Bumpei Sato, Seita Morishita, Yukihiro Imagawa, Masashi Mimura, Masanori Fukumoto, Takaki Sato, Takatoshi Kobayashi, Teruyo Kida, Tsunehiko Ikeda
BACKGROUND: To report our findings in a patient with asteroid hyalosis (AH) who had a severe reduction of his visual acuity following cataract surgery. The vision was improved by vitreous surgery. CASE PRESENTATION: The patient was an 81-year-old man. Following cataract surgery on his left eye, his decimal best-corrected visual acuity (BCVA) was markedly reduced from 0.2 to 0.02. A large number of asteroid bodies (ABs) was observed to be concentrated on the posterior surface of the implanted intraocular lens...
May 15, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28503754/an-unusual-pathological-posterior-vitreous-detachment
#10
Ofira Zloto, Vicktoria Vishnevskia-Dai
No abstract text is available yet for this article.
May 14, 2017: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://www.readbyqxmd.com/read/28494563/-the-clinical-manifestations-and-imaging-characteristics-of-acute-syphilitic-posterior-placoid-chorioretinitis
#11
F Hu, X N Wang, X S Cao, X Y Peng
Objective: To investigate the clinical manifestations and imaging characteristics of acute syphilitic posterior placoid chorioretinitis (ASPPC). Methods: Retrospective study of 10 patients diagnosed ASPPC in the Department of Ophthalmology, Beijing Tongren Hospital from 2011 to 2016, including 6 males (10 eyes involved) and 4 females (8 eyes involved) with an age of (43.4±11.6) years (range, 26-60 years). Their clinical manifestations and imaging characteristics were summarized. Results: All 10 ASPPC patients complained about the reduction of visual acuity, and the majority of them had both eyes involved...
May 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28465833/asymmetric-outcomes-of-type-1-retinopathy-of-prematurity-after-bilateral-intravitreal-ranibizumab-treatment
#12
Qiujing Huang, Qi Zhang, Yu Xu, Xunda Ji, Ping Fei, Jie Peng, Yi-An Li, Peiquan Zhao
Purpose. To present cases with retinopathy of prematurity (ROP), who were treated with intravitreal injection of ranibizumab (IVR) and had unpredictable asymmetric outcomes. Methods. A retrospective review was performed in infants with type 1 ROP and had bilateral IVR (0.25 mg/0.025 mL) as initial treatment. Patients were classified into the asymmetric outcome group and the symmetric outcome group. Results. Eighty-four patients (168 eyes) were included. There were 18 eyes of 9 patients (10.7%) in the asymmetric outcome group and 150 eyes of 75 patients (89...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28461017/vitrectomy-and-vitrector-port-needle-biopsy-of-choroidal-melanoma-for-gene-expression-profile-testing-immediately-before-brachytherapy
#13
Deepthi M Reddy, Lauren B Mason, John O Mason, Jason N Crosson, Jacob J Yunker
PURPOSE: Transvitreal and transscleral needle biopsy can result in complications including vitreous hemorrhage and retinal detachment. This study evaluated a technique using 25-gauge vitrectomy as an adjunct to needle biopsy immediately before brachytherapy to minimize these complications and preserve good visual acuity. DESIGN: Retrospective, observational case series. PARTICIPANTS: Fifty-seven consecutive eyes of 57 patients with treatment-naïve medium choroidal melanomas without extraocular extension from July 2012 through September 2015...
April 28, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28457613/flanged-intrascleral-intraocular-lens-fixation-with-double-needle-technique
#14
Shin Yamane, Shimpei Sato, Maiko Maruyama-Inoue, Kazuaki Kadonosono
PURPOSE: To report the clinical outcomes of a new technique for transconjunctival intrascleral fixation of an intraocular lens (IOL). DESIGN: Prospective, noncomparative, interventional case series. PARTICIPANTS: One hundred eyes of 97 consecutive patients with aphakia, dislocated IOL, or subluxated crystalline lens who underwent posterior chamber sutureless implantation of an IOL were studied. METHODS: Two angled incisions parallel to the limbus were made by 30-gauge thin-wall needles...
April 27, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28439168/ocular-injuries-in-patients-of-zygomatico-complex-zmc-fractures
#15
Altaf Hussain Malik, Aijaz A Shah, Irshad Ahmad, Babar Ai Shah
PURPOSE: Mid face injuries commonly destroy the integrity of the orbital skeleton, and are frequently complicated by injury to the eye, ranging between 2.7 and 90.6 % as reported in literature. The eye injuries range from simple subconjunctival haemorrhage to globe rupture. The paper aims to study the types of ocular injuries in patients with ZMC fractures. PATIENTS AND METHODS: A study of 67 patients, who had sustained facial trauma sufficient to lead to a facial bone fracture, was undertaken in the department of Oral and Maxillofacial Surgery, Govt Dental College, Srinagar from 2008 to 2014 and the patients received a comprehensive examination by an ophthalmologist within 1 week of injury...
June 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28430324/negative-staining-of-the-vitreous-with-the-use-of-vital-dyes
#16
Cesare Mariotti, Michele Nicolai, Simone Donati, Michele Reibaldi
PURPOSE: The vitreous cortex, epiretinal membrane (ERM), and inner limiting membrane (ILM) are transparent tissues and are thus difficult to visualize. Staining these structures can increase the efficiency of a nontraumatic removal. METHODS: The surgeon performs a partial core vitrectomy and induces a posterior vitreous detachment. The vital dye is then injected into the retrohyaloid space in balanced salt solution (BSS). The dyes used are TWIN (Alchimia srl, Padova, Italy), MembraneBlue-Dual (DORC International, Zuidland, the Netherlands), and Doubledyne (Alfa Intes, Casoria, Italy)...
April 13, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28405744/long-term-follow-up-of-fellow-eye-in-patients-with-lamellar-macular-hole
#17
Ugo Nava, Matteo Giuseppe Cereda, Ferdinando Bottoni, Chiara Preziosa, Marco Pellegrini, Andrea Giani, Giovanni Staurenghi
BACKGROUND: To evaluate macular changes in fellow eyes of patients diagnosed with lamellar macular hole (LMH) using spectral-domain optical coherence tomography (SD-OCT) and blue fundus autofluorescence (B-FAF). METHODS: Fellow eyes of patients diagnosed with a LMH were retrospectively evaluated on OCT. Best-corrected visual acuity (BCVA) and central foveal thickness (CFT) were recorded. Corresponding B-FAF images, vitreo-macular relations, and type of epiretinal membranes (ERMs) were also examined...
April 13, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28393030/surgical-treatment-and-visual-outcomes-of-cataract-with-persistent-hyperplastic-primary-vitreous
#18
Li Li, Da-Bei Fan, Ya-Ting Zhao, Yun Li, Fang-Fei Cai, Guang-Ying Zheng
AIM: To evaluate the surgical treatment and visual outcomes of eyes with cataract and persistent hyperplastic primary vitreous (PHPV). METHODS: This retrospective study included patients with cataract and PHPV treated with various strategies. Anterior PHPV was treated using phacoemulsification with underwater electric coagulation on posterior capsule neovascularization, posterior capsulotomy, anterior vitrectomy, and intraocular lens (IOL) implantation. Posterior PHPV was treated with lensectomy, posterior vitrectomy, retinal photocoagulation, and IOL implantation or silicone oil tamponade...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28389702/cooperative-robot-assistant-for-vitreoretinal-microsurgery-development-of-the-rvrms-and-feasibility-studies-in-an-animal-model
#19
Yi-Qi Chen, Ji-Wei Tao, Ling-Ya Su, Liang Li, Shi-Xin Zhao, Yang Yang, Li-Jun Shen
PURPOSE: The purpose of the study was to describe the development of a robotic aided surgical system named RVRMS (robotic vitreous retinal microsurgery system) and to evaluate the capability for using it to perform vitreoretinal surgery. METHODS: The RVRMS was designed and built to include the key components of two independent arms. End-effectors of each arm fix various surgical instruments and perform intraocular manipulation. To evaluate properly the RVRMS, robot-assisted 23-gauge surgical tasks including endolaser for retinal photocoagulation, pars plana vitrectomy (PPV), retinal foreign body removal and retinal vascular cannulation were performed in two different sizes of an animal model...
April 8, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28376042/spectral-domain-optical-coherence-tomography-findings-in-macula-involving-cytomegalovirus-retinitis
#20
Mrinali P Gupta, Sarju Patel, Anton Orlin, Elizabeth Marlow, Ru-Ik Chee, Jennifer Nadelmann, R V Paul Chan, Donald J DʼAmico, Szilard Kiss
PURPOSE: To evaluate the microstructural features of cytomegalovirus (CMV) retinitis by spectral domain optical coherence tomography (OCT). METHODS: Subjects were patients with macula-involving CMV retinitis with OCT imaging. The leading edge of retinitis in the macula was identified based on fundus imaging, and OCT findings were longitudinally evaluated in three areas: within the area of active retinitis, at the leading edge of retinitis, and just beyond the leading edge of retinitis...
April 3, 2017: Retina
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