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Nomdo M Jansonius - One of the best experts on this subject based on the ideXlab platform.
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Glaucoma drainage device Surgery after Vitreoretinal Surgery: incidence and risk factors
Acta ophthalmologica, 2015Co-Authors: Margriet M. De Vries, Rogier P. H. M. Müskens, V. W. Renardel De Lavalette, Johanna M M Hooymans, Nomdo M JansoniusAbstract:textabstractPurpose The initial success of Vitreoretinal Surgery can be annihilated by an acceleration of preexisting glaucoma or the development of secondary glaucoma. Aim of this study was to determine the incidence of and risk factors for medically uncontrollable glaucoma after Vitreoretinal Surgery. Methods Case-control study amongst patients who underwent Vitreoretinal Surgery at the University Medical Center Groningen between 1991 and 2011 (in total 14 942 interventions). Cases were all patients who received a glaucoma drainage device after Vitreoretinal Surgery. Controls were a subset of the patients who underwent Vitreoretinal Surgery without a subsequent drainage device. Cases and controls were matched (three controls per case) with regard to the year of the (first) Vitreoretinal intervention. The incidence rate was calculated from the number of cases and the number of person-years corresponding to all Vitreoretinal interventions performed in the study period. Risk factors were analysed with logistic regression. Results Ninety-five cases were identified after a follow-up of 101 961 person-years (one per 1000 person-years). Cases were younger (p = 0.017), were more often men (p = 0.035), underwent more interventions (p < 0.001) or were treated with silicone oil (p = 0.021), had a higher intra-ocular pressure 1 week after the intervention (p < 0.001) and had more often a history of glaucoma or ocular hypertension (p < 0.001). Conclusion Glaucoma after Vitreoretinal Surgery that requires a glaucoma drainage device is not very common and patients who need a device differ from those who do not. This gives the opportunity to monitor certain subgroups more closely.
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Risk factors for the development of glaucoma after Vitreoretinal Surgery
Acta Ophthalmologica, 2013Co-Authors: De Margriet Vries, Rogier P. H. M. Müskens, V. W. Renardel De Lavalette, Johanna M M Hooymans, Nomdo M JansoniusAbstract:Purpose To determine risk factors for the development of glaucoma after Vitreoretinal Surgery. Methods Case-control study. Cases (n=96) were all patients who received a Baerveldt glaucoma implant after Vitreoretinal Surgery performed between 1991-2011. Controls (n=288) were a random subset of patients who underwent Vitreoretinal Surgery without subsequent glaucoma Surgery. Cases and controls were matched with regard to the year in which the first Vitreoretinal intervention was performed. The role of age, sex, number of interventions, type of intervention (plombe or vitrectomy), indication of first intervention, use of silicone oil, preoperative lens status, IOP and IOP lowering medication one week after the first intervention, history of glaucoma or OHT, and a positive family history of glaucoma were analyzed with logistic regression. Results Cases were more often men (p=0.03), younger at the moment of the first surgical procedure (p=0.005), underwent more Vitreoretinal procedures (p
Mamoru Mitsuishi - One of the best experts on this subject based on the ideXlab platform.
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microsurgical robotic system for Vitreoretinal Surgery
Computer Assisted Radiology and Surgery, 2012Co-Authors: Naohiko Sugita, Takashi Ueta, Yasuhiro Tamaki, Keiji Tanimoto, Mamoru MitsuishiAbstract:Purpose Robotics may improve Vitreoretinal Surgery by steadying hand motion, thereby reducing negative outcomes. This study aimed to develop a microsurgical robot for Vitreoretinal Surgery and to perform clinical procedures using robot-assisted interventions.
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A parallel robot to assist Vitreoretinal Surgery.
International journal of computer assisted radiology and surgery, 2009Co-Authors: Taiga Nakano, Naohiko Sugita, Takashi Ueta, Yasuhiro Tamaki, Mamoru MitsuishiAbstract:Purpose This paper describes the development and evaluation of a parallel prototype robot for Vitreoretinal Surgery where physiological hand tremor limits performance.
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A parallel robot to assist Vitreoretinal Surgery
International Journal of Computer Assisted Radiology and Surgery, 2009Co-Authors: Taiga Nakano, Naohiko Sugita, Takashi Ueta, Yasuhiro Tamaki, Mamoru MitsuishiAbstract:Purpose This paper describes the development and evaluation of a parallel prototype robot for Vitreoretinal Surgery where physiological hand tremor limits performance. Methods The manipulator was specifically designed to meet requirements such as size, precision, and sterilization; this has six-degree-of-freedom parallel architecture and provides positioning accuracy with micrometer resolution within the eye. The manipulator is controlled by an operator with a “master manipulator” consisting of multiple joints. Results Results of the in vitro experiments revealed that when compared to the manual procedure, a higher stability and accuracy of tool positioning could be achieved using the prototype robot. Conclusions This microsurgical system that we have developed has superior operability as compared to traditional manual procedure and has sufficient potential to be used clinically for Vitreoretinal Surgery.
Naohiko Sugita - One of the best experts on this subject based on the ideXlab platform.
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microsurgical robotic system for Vitreoretinal Surgery
Computer Assisted Radiology and Surgery, 2012Co-Authors: Naohiko Sugita, Takashi Ueta, Yasuhiro Tamaki, Keiji Tanimoto, Mamoru MitsuishiAbstract:Purpose Robotics may improve Vitreoretinal Surgery by steadying hand motion, thereby reducing negative outcomes. This study aimed to develop a microsurgical robot for Vitreoretinal Surgery and to perform clinical procedures using robot-assisted interventions.
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A parallel robot to assist Vitreoretinal Surgery.
International journal of computer assisted radiology and surgery, 2009Co-Authors: Taiga Nakano, Naohiko Sugita, Takashi Ueta, Yasuhiro Tamaki, Mamoru MitsuishiAbstract:Purpose This paper describes the development and evaluation of a parallel prototype robot for Vitreoretinal Surgery where physiological hand tremor limits performance.
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A parallel robot to assist Vitreoretinal Surgery
International Journal of Computer Assisted Radiology and Surgery, 2009Co-Authors: Taiga Nakano, Naohiko Sugita, Takashi Ueta, Yasuhiro Tamaki, Mamoru MitsuishiAbstract:Purpose This paper describes the development and evaluation of a parallel prototype robot for Vitreoretinal Surgery where physiological hand tremor limits performance. Methods The manipulator was specifically designed to meet requirements such as size, precision, and sterilization; this has six-degree-of-freedom parallel architecture and provides positioning accuracy with micrometer resolution within the eye. The manipulator is controlled by an operator with a “master manipulator” consisting of multiple joints. Results Results of the in vitro experiments revealed that when compared to the manual procedure, a higher stability and accuracy of tool positioning could be achieved using the prototype robot. Conclusions This microsurgical system that we have developed has superior operability as compared to traditional manual procedure and has sufficient potential to be used clinically for Vitreoretinal Surgery.
Li Bao-jian - One of the best experts on this subject based on the ideXlab platform.
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Vitreoretinal Surgery for children with ocular trauma
Clinical Ophthalmology, 2009Co-Authors: Li Bao-jianAbstract:Objective To investigate the effects of Vitreoretinal Surgery for children with ocular trauma. Methods Vitrectomy combine with intraocular foreign body taking,lensectomy,retina solution,vitreous injection,laser photo-coagulation and inergas or silicone tamponade were used of 169 cases. Results Curing 135 cases functionally(79.9%),curing 22 cases anatomically(13.0%),nulli-curing 12 cases(7.1%).The visual acuities were:lower than 0.02 in 12 cases(7.1%),higher than 0.02 in 85 cases(50.3%),higher than 0.1 in 68 cases(40.2%). The endophthalmitis controlling was 100%,the intraocular foreign body taking was 100%. Conclusion Vitreoretinal Surgery is the most effective treatment for children with ocular trauma.
Bickol N. Mukesh - One of the best experts on this subject based on the ideXlab platform.
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pH-adjusted periocular anaesthesia for primary Vitreoretinal Surgery.
Indian Journal of Ophthalmology, 1999Co-Authors: Tarun Sharma, Lingam Gopal, Sunil Parikh, Mahesh P Shanmugam, Saha Sk, Sulochana Kr, Nitin S Shetty, Bickol N. Mukesh, Sengamedu S. BadrinathAbstract:Purpose: To evaluate the efficacy of pH-adjusted bupivacaine in conjunction with medial orbital periconal block (periocular anaesthesia). Methods: Sixty consecutive patients undergoing primary Vitreoretinal Surgery were enrolled prospectively. Results: Adequate anaesthesia and akinesia with no intraoperative supplementation was achieved in 53 eyes (88.3%). Factors influencing intraoperative supplementation were combined vitrectomy with scleral buckling (p=0.005) and duration of Surgery of more than 2 hours (p=0.001). No ocular or systemic complication resulted. Conclusion: pH-adjusted periocular anaesthesia is safe and effective in patients undergoing primary Vitreoretinal Surgery.
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Parabulbar anesthesia for primary Vitreoretinal Surgery.
Ophthalmology, 1997Co-Authors: Tarun Sharma, Lingam Gopal, Sunil Parikh, Mahesh P Shanmugam, Sengamedu S. Badrinath, Bickol N. MukeshAbstract:Purpose: The efficacy and safety of parabulbar anesthesia was investigated prospectively in 100 patients undergoing primary Vitreoretinal Surgery. Methods: The technique involved three steps: (1) orbicularis oculi injection, (2) subconjunctival injection, and (3) sub-Tenon irrigation. The effect of anesthesia was graded 0 to 5 depending on inadequate anesthesia-akinesia with or without local supplementation. Ninety-three patients underwent vitrectomy without buckling and 4 with an encircling band; 3 had scleral buckling. Mean duration of Surgery was 89.38 minutes. Results: In 69% of patients (grades 4 and 5), no supplementation was required and in 31 % (grades 1–3), local supplementation was needed for inadequate anesthesia or akinesia or both. No ocular or systemic complication occurred. Early onset of anesthesia correlated with adequate anesthesia throughout the procedure ( P Conclusions: Parabulbar anesthesia is a safe and effective technique of local anesthesia in patients undergoing primary Vitreoretinal Surgery.
