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Boston keratoprosthesis

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https://www.readbyqxmd.com/read/28990998/intermediate-term-and-long-term-outcomes-with-the-boston-type-1-keratoprosthesis-in-aniridia
#1
Kevin J Shah, Albert Y Cheung, Edward J Holland
PURPOSE: To report the intermediate- and long-term visual outcomes and complications with the Boston type 1 keratoprosthesis (KPro) for the management of aniridic keratopathy. METHODS: A retrospective chart review of 46 eyes of 34 patients (20 females and 14 males) with aniridic keratopathy who underwent Boston type 1 KPro surgery by a single surgeon from 2004 to 2012 with minimum 2-year follow-up was conducted. Preoperative, intraoperative, and postoperative parameters were collected and analyzed...
October 5, 2017: Cornea
https://www.readbyqxmd.com/read/28990994/long-term-visual-outcomes-complications-and-retention-of-the-boston-type-i-keratoprosthesis
#2
Carolina Aravena, Fei Yu, Anthony J Aldave
PURPOSE: To report the long-term outcomes of the Boston type I keratoprosthesis (KPro). METHODS: Data were collected regarding preoperative characteristics, surgical procedure(s) performed, and postoperative outcomes of patients who underwent KPro implantation from May 1, 2004, to May 1, 2011, and were followed for 5 years after surgery. RESULTS: Seventy-four KPro procedures were performed in 58 eyes (55 patients), with more than 1 KPro implanted in 10 eyes...
October 5, 2017: Cornea
https://www.readbyqxmd.com/read/28984794/the-use-of-povidone-iodine-in-ophthalmology
#3
Andrzej Grzybowski, Piotr Kanclerz, William G Myers
PURPOSE OF REVIEW: Povidone-iodine (PVI) is a disinfectant and antiseptic agent used for preoperative preparation of the skin and mucous membranes, as well as for the treatment of contaminated wounds. Currently regimens for prophylaxis against postsurgical endophthalmitis are being modified, including a total withdrawal of antibiotics in intravitreal injections. The aim of this study was to evaluate the use of PVI in ophthalmology. RECENT FINDINGS: As a result of its broad spectrum of microbicidal activity, PVI is routinely used in ophthalmic surgery...
October 3, 2017: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/28944307/posterior-pole-retinal-detachment-due-to-a-macular-hole-in-a-patient-with-a-boston-keratoprosthesis
#4
Daniel Gologorsky, Basil K Williams, Harry W Flynn
PURPOSE: To describe the clinical course of a patient with a Boston Keratoprosthesis type I who developed a localized posterior pole retinal detachment secondary to a macular hole. OBSERVATIONS: A 73-year-old patient with a Boston Keratoprosthesis developed a localized posterior pole retinal detachment secondary to a macular hole. The retinal detachment was repaired with a 23-gauge pars plana vitrectomy, membrane peel, fluid-air exchange and 18% C3F8. Retinal reattachment was achieved but the macular hole remained open...
April 2017: American Journal of Ophthalmology Case Reports
https://www.readbyqxmd.com/read/28928267/impact-of-type-i-boston-keratoprosthesis-implantation-on-vision-related-quality-of-life
#5
Marcus Ang, Ryan Man, Eva Fenwick, Ecosse Lamoureux, Mark Wilkins
AIM: To determine the impact of type I Boston keratoprosthesis (KPro) implantation on vision-related quality of life (VRQoL). METHODS: Prospective study in 33 patients (mean age 56±12 years, 67% male) with bilateral corneal blindness, who underwent a KPro implantation at a single tertiary eye hospital (June 2011-July 2015). VRQoL was evaluated using the Impact of Vision Impairment Questionnaire (IVI) at baseline and at 3-6 months postsurgery, after stabilisation of best-corrected visual acuity (BCVA)...
September 19, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28834816/donor-derived-conjunctival-limbal-melanoma-after-a-keratolimbal-allograft
#6
Lorena Sepsakos, Albert Y Cheung, Jeffrey A Nerad, Gautham Mogilishetty, Edward J Holland
PURPOSE: To report a single case of donor-derived conjunctival-limbal melanoma that occurred after a keratolimbal allograft (KLAL). METHODS: Case report and literature review. RESULTS: A 56-year-old white woman with a history of bilateral limbal stem cell deficiency developed a donor-related melanoma after a KLAL. Three months after undergoing an uncomplicated KLAL, the patient presented with hemorrhagic nodules within her conjunctiva and transplanted tissue...
August 22, 2017: Cornea
https://www.readbyqxmd.com/read/28807636/visual-outcomes-and-complications-of-type-i-boston-keratoprosthesis-in-children-a-retrospective-multicenter-study-and-literature-review
#7
Simon S M Fung, Samir Jabbour, Mona Harissi-Dagher, Reginald R G Tan, Patrick Hamel, Kashif Baig, Asim Ali
PURPOSE: To report outcomes and complications of Boston type 1 keratoprosthesis (KPro) implantation in children. DESIGN: Retrospective, multicenter case series. PARTICIPANTS: All children 16 years of age or younger who underwent KPro surgery at 3 ophthalmology centers in Canada between January 2010 and November 2014. METHODS: Records of patients having undergone KPro implantation were reviewed. Data on preoperative characteristics, surgical procedure(s) performed, and postoperative outcomes were collected and analyzed...
August 11, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28777800/vision-retention-in-early-versus-delayed-glaucoma-surgical-intervention-in-patients-with-boston-keratoprosthesis-type-1
#8
Mark Lin, Anand Bhatt, Asghar Haider, Grace Kim, Marjan Farid, Mason Schmutz, Sameh Mosaed
IMPORTANCE: The loss of vision following Boston Keratoprosthesis (BKPro) surgery due to glaucoma occurs at a high frequency as diagnosis and management of glaucoma after this procedure pose challenges. OBJECTIVE: To compare visual outcomes in patients undergoing Boston Keratoprosthesis surgery with and without prior or concurrent glaucoma surgery. DESIGN, SETTING, AND PARTICIPANTS: This is a retrospective, observational cohort study of patients who underwent Boston Type I Keratoprosthesis surgery...
2017: PloS One
https://www.readbyqxmd.com/read/28662941/no-light-perception-outcomes-following-boston-keratoprosthesis-type-1-surgery
#9
Adam K Muzychuk, Georges M Durr, Julien J Shine, Marie-Claude Robert, Mona Harissi-Dagher
PURPOSE: To determine the incidence rate, principal causes, and clinical course of eyes developing no light perception (NLP) visual acuity (VA) following Boston Keratoprosthesis (B-KPro) type 1 surgery. Secondary objectives include determining the incidence rate, relative risk (RR), and survival probability with respect to NLP outcomes among eyes with congenital aniridia. DESIGN: Retrospective, interventional case series. SUBJECTS: All patients undergoing B-KPro type 1 surgery between October 2008 and June 2016 by a single surgeon at CHUM - Hôpital Notre-Dame...
September 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28614155/the-role-of-the-back-plate-in-angle-anatomy-with-the-boston-type-i-keratoprosthesis
#10
Elise V Taniguchi, Eleftherios I Paschalis, Alja Crnej, Ai Ren, Kathryn A Colby, James Chodosh, Louis R Pasquale, Lucy Q Shen, Claes H Dohlman, Andrea Cruzat
PURPOSE: To quantitatively evaluate the angle anatomy in eyes with the Boston type I keratoprosthesis (B-KPro) differing in the back plate (BP) material and size using anterior segment optical coherence tomography. METHODS: B-KPro eyes with poly(methyl methacrylate) (PMMA) (7.0 and 8.5 mm) and titanium (7.0, 8.5, and 9.5 mm) BPs were imaged with anterior segment optical coherence tomography. The angle opening distance at 500 μm from the scleral spur (AOD500), trabecular iris surface area at 500 μm from the scleral spur (TISA500), and trabecular iris angle at 500 μm from the scleral spur (TIA500) were measured...
June 13, 2017: Cornea
https://www.readbyqxmd.com/read/28586930/-mid-and-longterm-experiences-with-the-boston-keratoprosthesis-the-cologne-and-salzburg-perspective
#11
Friederike Schaub, Björn O Bachmann, Orang Seyeddain, Sarah Moussa, Herbert A Reitsamer, Claus Cursiefen
Background Eyes with severe corneal opacifications and insufficient prognosis for high-risk corneal transplantation can be considered for the implantation of a Boston-keratoprosthesis. Since 2013, this technique of "artificial" corneal replacement is provided to high-risk eyes at the Department of Ophthalmology, University of Cologne and for 9 years at the University of Salzburg. In the meantime, a type I Boston keratoprosthesis (BI-KPro) has been implanted in 24 eyes in Cologne and in 28 eyes in Salzburg. Methods In this article, results and complications according to BI-KPro are discussed, both from the literature in PubMed, as well as from our own experiences...
June 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28529825/innovative-approaches-to-glaucoma-management-of-boston-keratoprosthesis-type-1
#12
Thasarat S Vajaranant, Jessica Liu, Jacob Wilensky, M Soledad Cortina, Ahmad A Aref
Glaucoma remains a prevalent disorder and visual limiting factor after Boston keratoprosthesis type 1 implantation. Patients with glaucoma have worse initial and late visual acuity outcomes after otherwise successful keratoprosthesis implantation. Management of glaucoma in the setting of a keratoprosthesis is challenging because of relatively rapid progression and an inability to accurately measure intraocular pressure (IOP). In addition, there are no standard guidelines for glaucoma surveillance and monitoring after keratoprosthesis surgery...
September 2016: Current Ophthalmology Reports
https://www.readbyqxmd.com/read/28528012/impact-of-total-pars-plana-vitrectomy-on-postoperative-complications-in-aphakic-snap-on-type-1-boston-keratoprosthesis
#13
Victor L Perez, Ella H Leung, Audina M Berrocal, Thomas A Albini, Jean Marie Parel, Guillermo Amescua, Eduardo C Alfonso, Tayyeba K Ali, Allister Gibbons
PURPOSE: To determine the impact of total pars plana vitrectomies (PPVs) with peripheral shaving of the vitreous base on the rates of postoperative complications in patients with aphakic, snap-on type I Boston keratoprostheses (KPros). DESIGN: Retrospective, consecutive case series. PARTICIPANTS: A total of 48 eyes in 46 patients with implantation of aphakic, snap-on type 1 Boston KPros performed at a tertiary care facility between January 1, 2007, and December 31, 2013, were included...
October 2017: Ophthalmology
https://www.readbyqxmd.com/read/28495905/long-term-outcomes-of-the-boston-type-i-keratoprosthesis-in-eyes-with-previous-herpes-simplex-virus-keratitis
#14
Melinda Fry, Carolina Aravena, Fei Yu, Jaffer Kattan, Anthony J Aldave
PURPOSE: To report the long-term outcomes of the Boston type I keratoprosthesis (Kpro) in eyes with prior herpes simplex virus (HSV) keratitis. METHODS: Retrospective review of all Kpro procedures performed by a single surgeon from 1 May 2004 to 1 January 2015. RESULTS: 13 of 173 Kpro procedures were performed in 11 eyes with prior HSV keratitis. There was not a significant difference in the percentage of eyes with and without prior HSV keratitis with preoperative (9% vs 8%, p=1...
May 11, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28484851/-long-term-outcome-of-keratoprosthesis-with-biological-support
#15
K Hille
BACKGROUND: In severe Sicca syndrome and limbal stem cell deficiency, vision can be restored by an artificial optical implant into the cornea (keratoprosthesis, KPro). After multiple efforts to achieve long-lasting corneal fixation of such an optical implant, two methods have become established: KPro with biological support, such as osteo-odonto-keratoprosthesis (OOKP) made from the root of patient's own tooth or osteo-keratoprosthesis (OKP), made from cortical bone of the patient's tibia; and the Boston KPro...
May 8, 2017: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/28476052/measuring-forward-light-scatter-by-the-boston-keratoprosthesis-in-various-configurations
#16
Musa Abdelaziz, Claes H Dohlman, Rony R Sayegh
PURPOSE: Light scatter results in degradation of visual function. An optical bench model was used to identify the origins of scatter in the setting of a Boston keratoprosthesis (KPro). The effect of various modifications in the device design and light-blocking configurations was explored. METHODS: A KPro was mounted on a contact lens holder on a bench, and forward light scatter was recorded with a camera attached to a rotating goniometer arm. Scattered light was recorded at different angles for different KPro modifications, and the point-spread function (PSF) curves were recorded...
June 2017: Cornea
https://www.readbyqxmd.com/read/28457284/corneal-surgery-in-the-flying-eye-hospital-characteristics-and-visual-outcome
#17
Javed Hussain Farooqui, Emile Sharifi, Ahmed Gomaa
OBJECTIVE: The Flying Eye Hospital (FEH) of ORBIS International is a capacity-building platform that trains ophthalmologists throughout the developing world on-board a fully functional eye hospital based in an airplane and in the local hospitals of developing countries. Corneal blindness (CB) is the second leading cause of blindness in most developing countries. Treatment of existing global CB requires effective eye banking and surgeons trained in corneal transplant. ORBIS International has programs that addressed both those needs...
April 2017: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
https://www.readbyqxmd.com/read/28441214/the-osteo-odonto-keratoprosthesis
#18
REVIEW
Mehran Zarei-Ghanavati, Venkata Avadhanam, Alfonso Vasquez Perez, Christopher Liu
PURPOSE OF REVIEW: To describe the practice of and recent developments in the osteo-odonto-keratoprosthesis. RECENT FINDINGS: Formal psychological assessment and support have been described. A sub-aqua system for fashioning the osteo-odonto-keratoprosthesis lamina; adoption of thicker laminae; use of bisphosphonate drugs; advances in laminar imaging; and use of bone augmentation and bone morphogenetic protein have been described for prevention, detection, and management of laminar resorption...
July 2017: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/28383302/the-boston-keratoprosthesis
#19
REVIEW
Hajirah N Saeed, Swapna Shanbhag, James Chodosh
PURPOSE OF REVIEW: The Boston keratoprosthesis (BKPro) is often the only hope for visual rehabilitation in severe corneal disease. Since Food and Drug Administration approval of the device in 1992, there have been a series of advances in its design, surgical techniques, and postoperative care, which have widened its applicability and decreased associated complications. The purpose of this review is to highlight the indications, management, outcomes, and advances in the BKPro literature...
July 2017: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/28237154/outcomes-of-bilateral-sequential-implantation-of-the-boston-keratoprosthesis-type-1
#20
COMPARATIVE STUDY
Louis Vaillancourt, Eleni Papanagnu, Marwan Elfekhfakh, Raphaelle Fadous, Mona Harissi-Dagher
OBJECTIVE: To evaluate the risks and benefits of sequential bilateral Boston type 1 keratoprosthesis (KPro) implantation for bilateral corneal blindness. DESIGN: Comparative retrospective study. PARTICIPANTS: Patients who underwent a sequential bilateral KPro surgery. METHODS: All 11 patients who underwent sequential bilateral KPro surgery at the Centre Hospitalier de l'Université de Montréal between October 2008 and October 2011 were recruited...
February 2017: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
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