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Search Results: 1 - 10 of 138716 matches for " K. Mimura "
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Combination of a modified Hotz procedure with the Jones procedure decreases the recurrence of involutional entropion
Nakauchi K, Mimura O
Clinical Ophthalmology , 2012, DOI: http://dx.doi.org/10.2147/OPTH.S36819
Abstract: mbination of a modified Hotz procedure with the Jones procedure decreases the recurrence of involutional entropion Case Series (1369) Total Article Views Authors: Nakauchi K, Mimura O Published Date November 2012 Volume 2012:6 Pages 1819 - 1822 DOI: http://dx.doi.org/10.2147/OPTH.S36819 Received: 07 August 2012 Accepted: 10 September 2012 Published: 02 November 2012 Kazuaki Nakauchi, Osamu Mimura Department of Ophthalmology, Hospital of Hyogo College of Medicine, Nishinomiya, Hyogo, Japan Purpose: Involutional entropion is a common condition in Asian countries, including Japan. One cause of involutional entropion is weakening of the capsulopalpebral fascia (CPF). The aged, thin, membranous nature of the CPF limits the results of correction by the original Jones procedure (CPF tightening) alone, so we added the modified Hotz procedure to the entropion repair. We then compared the recurrence rates and operation times in corrections performed with and without this additional procedure. Cases: From April 2010 to December 2011, one surgeon performed lower-lid surgery using the Jones procedure with the addition of the modified Hotz procedure. Fifteen patients (a total of 21 eyes) underwent this combined procedure. Previously, the same surgeon performed the Jones procedure alone for eight patients (a total of nine eyes). Results: The average age of the two groups was 76.4 years, with an age range of 66–85 years. All cases reported acceptable ciliary orientation at the end of the surgery. However, patients who underwent the Jones procedure alone (nine eyes total) reported three cases of recurrence after at least 6 months of follow-up. Patients who underwent the combined procedure reported two complications: one recurrence and one ectropion. The recurrence rate was 5%. The Jones procedure using eyelid pinch required an average of 22.6 minutes to complete; the combined method required 33.4 minutes to complete. Conclusion: The combined method resulted in a significantly higher success rate than the Jones procedure alone (P < 0.05). The 5% failure rate of the combined method was found to be superior to the 30% recurrence rate of the Jones procedure. As a result, the Hotz procedure enhanced the results of the entropion correction and required only 10 additional minutes of surgery. We now perform this combined procedure for all cases.
Fish tail resection for treating congenital entropion in Asians
Nakauchi K, Mimura O.
Clinical Ophthalmology , 2012, DOI: http://dx.doi.org/10.2147/OPTH.S31122
Abstract: h tail resection for treating congenital entropion in Asians Case Series (1989) Total Article Views Authors: Nakauchi K, Mimura O. Published Date May 2012 Volume 2012:6 Pages 831 - 836 DOI: http://dx.doi.org/10.2147/OPTH.S31122 Received: 22 February 2012 Accepted: 26 March 2012 Published: 31 May 2012 Kazuaki Nakauchi, Osamu Mimura Ophthalmology, Hyogo College of Medicine, Hyogo, Japan Preface: The Asian race has a high prevalence of congenital entropion. It was reported that over 20% of Japanese children have congenital entropion at the age of 1 year. One of the structural causes of this condition is the development of epiblepharon, which attaches the lower eyelid to the upper eyelid, and is also common among Asians. However, designing a procedure for modifying an epicanthus flap is relatively difficult, and epicanthoplasty is not a popular procedure in Japan. In the present study, we developed an easy method of designing the surgery, and we describe both the surgical procedure and the outcome. Cases: Between January 2010 and August 2011, one surgeon performed surgery to correct congenital entropion in 28 patients. We analyzed this series of 28 cases retrospectively. The patients consisted of 17 females and eleven males with an average age of 7.6 years. Ten patients with a thick epicanthal fold required epicanthoplasties in addition to lower lid procedures, and 18 patients with a thin epicanthal fold required only lower lid procedures. Surgical method: On the epicanthus, a small, triangular “fish-tail” flap that was 2 mm wide was designed and was located adjacent to a “fish-body” marking on the subciliary lower eyelid. After fish-tail resection, the residual medial edge was sutured to the corner of the epicanthus. A C-shaped epicanthus was changed into an L-shape by means of this procedure. Result: The fish-tail resection diminished the tension of the orbicularis in the superior direction. After a minimum of 6 months, the shape of the medial canthus remained L-shaped, and the cilia had stable orientations. Conclusion: This plasty is easy to design in conjunction with a Hotz procedure, and it is an effective means of correcting Asian congenital entropion. Recognizing the shape of a congenital entropion that is accompanied by epiblepharon is important for its radical treatment.
Combination of a modified Hotz procedure with the Jones procedure decreases the recurrence of involutional entropion
Nakauchi K,Mimura O
Clinical Ophthalmology , 2012,
Abstract: Kazuaki Nakauchi, Osamu MimuraDepartment of Ophthalmology, Hospital of Hyogo College of Medicine, Nishinomiya, Hyogo, JapanPurpose: Involutional entropion is a common condition in Asian countries, including Japan. One cause of involutional entropion is weakening of the capsulopalpebral fascia (CPF). The aged, thin, membranous nature of the CPF limits the results of correction by the original Jones procedure (CPF tightening) alone, so we added the modified Hotz procedure to the entropion repair. We then compared the recurrence rates and operation times in corrections performed with and without this additional procedure.Cases: From April 2010 to December 2011, one surgeon performed lower-lid surgery using the Jones procedure with the addition of the modified Hotz procedure. Fifteen patients (a total of 21 eyes) underwent this combined procedure. Previously, the same surgeon performed the Jones procedure alone for eight patients (a total of nine eyes).Results: The average age of the two groups was 76.4 years, with an age range of 66–85 years. All cases reported acceptable ciliary orientation at the end of the surgery. However, patients who underwent the Jones procedure alone (nine eyes total) reported three cases of recurrence after at least 6 months of follow-up. Patients who underwent the combined procedure reported two complications: one recurrence and one ectropion. The recurrence rate was 5%. The Jones procedure using eyelid pinch required an average of 22.6 minutes to complete; the combined method required 33.4 minutes to complete.Conclusion: The combined method resulted in a significantly higher success rate than the Jones procedure alone (P < 0.05). The 5% failure rate of the combined method was found to be superior to the 30% recurrence rate of the Jones procedure. As a result, the Hotz procedure enhanced the results of the entropion correction and required only 10 additional minutes of surgery. We now perform this combined procedure for all cases.Keywords: Jones procedure, Hotz procedure, entropion, recurrence, operation time
Fish tail resection for treating congenital entropion in Asians
Nakauchi K,Mimura O.
Clinical Ophthalmology , 2012,
Abstract: Kazuaki Nakauchi, Osamu MimuraOphthalmology, Hyogo College of Medicine, Hyogo, JapanPreface: The Asian race has a high prevalence of congenital entropion. It was reported that over 20% of Japanese children have congenital entropion at the age of 1 year. One of the structural causes of this condition is the development of epiblepharon, which attaches the lower eyelid to the upper eyelid, and is also common among Asians. However, designing a procedure for modifying an epicanthus flap is relatively difficult, and epicanthoplasty is not a popular procedure in Japan. In the present study, we developed an easy method of designing the surgery, and we describe both the surgical procedure and the outcome.Cases: Between January 2010 and August 2011, one surgeon performed surgery to correct congenital entropion in 28 patients. We analyzed this series of 28 cases retrospectively. The patients consisted of 17 females and eleven males with an average age of 7.6 years. Ten patients with a thick epicanthal fold required epicanthoplasties in addition to lower lid procedures, and 18 patients with a thin epicanthal fold required only lower lid procedures.Surgical method: On the epicanthus, a small, triangular “fish-tail” flap that was 2 mm wide was designed and was located adjacent to a “fish-body” marking on the subciliary lower eyelid. After fish-tail resection, the residual medial edge was sutured to the corner of the epicanthus. A C-shaped epicanthus was changed into an L-shape by means of this procedure.Result: The fish-tail resection diminished the tension of the orbicularis in the superior direction. After a minimum of 6 months, the shape of the medial canthus remained L-shaped, and the cilia had stable orientations.Conclusion: This plasty is easy to design in conjunction with a Hotz procedure, and it is an effective means of correcting Asian congenital entropion. Recognizing the shape of a congenital entropion that is accompanied by epiblepharon is important for its radical treatment.Keywords: epiblepharon, congenital entropion, asian, modified Hotz, fish tail
Solving the mu problem in gauge mediated supersymmetry breaking models with flavor symmetry
K. S. Babu,Yukihiro Mimura
Physics , 2001,
Abstract: We suggest a solution to the \mu problem of gauge mediated supersymmtery breaking models based on flavor symmetries. In this scenario the \mu term arises through the vacuum expectation value of a singlet scalar field which is suppressed by a flavor symmetry factor relative to the scale of dynamical SUSY breaking. The same flavor symmetry also ensures that the soft SUSY breaking parameter B\mu is not much larger than \mu^2, a necessary condition for the stability of electroweak symmetry breaking. Explicit examples where B\mu ~ \mu^2 and B\mu << \mu^2 are presented. The latter case provides a natural solution to the supersymmetric CP problem. We show that the same flavor symmetry that suppresses the \mu and the B\mu parameters can also play a role in explaining the fermion mass and mixing hierarchy puzzle.
Frontal suspension for congenital ptosis using an expanded polytetrafluoroethylene (Gore-Tex ) sheet: one-year follow-up
Nakauchi K, Mito H, Mimura O
Clinical Ophthalmology , 2013, DOI: http://dx.doi.org/10.2147/OPTH.S39057
Abstract: ontal suspension for congenital ptosis using an expanded polytetrafluoroethylene (Gore-Tex ) sheet: one-year follow-up Original Research (846) Total Article Views Authors: Nakauchi K, Mito H, Mimura O Published Date January 2013 Volume 2013:7 Pages 131 - 136 DOI: http://dx.doi.org/10.2147/OPTH.S39057 Received: 11 October 2012 Accepted: 27 November 2012 Published: 16 January 2013 Kazuaki Nakauchi,1 Hidenori Mito,2 Osamu Mimura1 1Hospital of Hyogo College of Medicine, Hyogo, 2Ide Eye Hospital, Yamagata, Japan Background: The frontalis suspension technique is the surgical method of choice in patients with ptosis and a levator function of 4 mm or less. Several types of materials have been used, including Gore-Tex , which has been used successfully as a frontalis sling material since 1986. Recently, a Gore-Tex sheet (wider than a sling or strip) suspension was reported. This paper reports the results of 27 eyes from 20 patients with congenital ptosis treated using the frontalis suspension technique with the newly developed Gore-Tex Most Versatile Patch (MVP) sheet. Methods: All patients underwent surgery between April 2007 and September 2011 and were followed up for at least one year. The average follow-up duration was 18 months, with a range of 12–36 months. The average patient age was 45 (5–85) years, and the group included 11 males and nine females. Thirteen cases demonstrated ptosis in one eye, and seven cases involved both eyes. The patients were divided by age into a younger group and an older group. All ptosis procedures were performed using the Gore-Tex MVP sheet. The implant was normally 7 mm wide for adults and 5 mm wide for children. The implantation method was the same as that used for the sheet shape fascia. Results: In all patients, satisfactory functional results were observed at the 6-month follow-up examination. Eyelid opening heights were also obtained. The average marginal reflex distance (MRD) was -0.5 mm preoperatively, which improved to +1.9 mm after surgery. After one year, average MRD was +1.6 mm. MRD attenuation was more frequent in the younger group. There were no cases requiring redo surgery and only one case of exposure.
Frontal suspension for congenital ptosis using an expanded polytetrafluoroethylene (Gore-Tex®) sheet: one-year follow-up
Nakauchi K,Mito H,Mimura O
Clinical Ophthalmology , 2013,
Abstract: Kazuaki Nakauchi,1 Hidenori Mito,2 Osamu Mimura11Hospital of Hyogo College of Medicine, Hyogo, 2Ide Eye Hospital, Yamagata, JapanBackground: The frontalis suspension technique is the surgical method of choice in patients with ptosis and a levator function of 4 mm or less. Several types of materials have been used, including Gore-Tex , which has been used successfully as a frontalis sling material since 1986. Recently, a Gore-Tex sheet (wider than a sling or strip) suspension was reported. This paper reports the results of 27 eyes from 20 patients with congenital ptosis treated using the frontalis suspension technique with the newly developed Gore-Tex Most Versatile Patch (MVP) sheet.Methods: All patients underwent surgery between April 2007 and September 2011 and were followed up for at least one year. The average follow-up duration was 18 months, with a range of 12–36 months. The average patient age was 45 (5–85) years, and the group included 11 males and nine females. Thirteen cases demonstrated ptosis in one eye, and seven cases involved both eyes. The patients were divided by age into a younger group and an older group. All ptosis procedures were performed using the Gore-Tex MVP sheet. The implant was normally 7 mm wide for adults and 5 mm wide for children. The implantation method was the same as that used for the sheet shape fascia.Results: In all patients, satisfactory functional results were observed at the 6-month follow-up examination. Eyelid opening heights were also obtained. The average marginal reflex distance (MRD) was -0.5 mm preoperatively, which improved to +1.9 mm after surgery. After one year, average MRD was +1.6 mm. MRD attenuation was more frequent in the younger group. There were no cases requiring redo surgery and only one case of exposure.Keywords: polytetrafluoroethylene, Gore-Tex , frontalis suspension, congenital ptosis, recurrence
Influence of ischemia on visual function in patients with branch retinal vein occlusion and macular edema
Noma H, Funatsu H, Mimura T, Shimada K
Clinical Ophthalmology , 2011, DOI: http://dx.doi.org/10.2147/OPTH.S20527
Abstract: fluence of ischemia on visual function in patients with branch retinal vein occlusion and macular edema Original Research (2751) Total Article Views Authors: Noma H, Funatsu H, Mimura T, Shimada K Published Date May 2011 Volume 2011:5 Pages 679 - 685 DOI: http://dx.doi.org/10.2147/OPTH.S20527 Hidetaka Noma1, Hideharu Funatsu1, Tatsuya Mimura2, Katsunori Shimada3 1Department of Ophthalmology, Yachiyo Medical Center, Tokyo Women's Medical University, Owada-shinden, Chiba, Japan; 2Department of Ophthalmology, University of Tokyo Graduate School of Medicine, Tokyo, Japan; 3Department of Hygiene and Public Health II, Tokyo Women's Medical University, Shinjuku-ku, Tokyo, Japan Abstract: Visual function and retinal morphology were investigated to elucidate the influence of ischemia in patients with branch retinal vein occlusion (BRVO) and macular edema. In 41 consecutive patients with BRVO aged 68.9 ± 10.0 years (22 women and 19 men), the area of capillary nonperfusion was measured by fluorescein angiography. Retinal thickness and retinal volume were measured by optical coherence tomography, and mean retinal sensitivity was calculated for each of 9 macular subfields. Mean visual acuity and macular sensitivity within the central subfield were not significantly correlated with the nonperfused area. However, the macular sensitivity within the central 5 subfields and all 9 subfields showed significant negative correlations with the nonperfused area. Also, macular thickness and volume within all 9 subfields were significantly correlated with the nonperfused area. In conclusion, evaluation of both the fovea and the entire macular region may be important in patients with ischemic BRVO.
Recanalization 24 months after endovascular repair of a large internal iliac artery aneurysm with use of stent-graft.
Yasui K,Kanazawa S,Mimura H,Dendo S
Acta Medica Okayama , 2001,
Abstract: An 83-year-old man with a large internal iliac artery aneurysm (IIAA) was treated with the use of stent-graft, suggesting successful results at 3, 6, and 12 months after treatment. However, 24-month follow-up computed tomography showed minor peripheral opacification of the IIAA. The patient underwent surgical endoaneurysmorrhaphy. No previous report of long-term recanalization of a satisfactorily thrombosed iliac artery aneurysm at 2 years or more after stent-grafting has been previously reported. Further follow-up studies need to be performed on the present procedure before anyone can confidently recommend it in regard to its long-term safety.
Percutaneous sclerotherapy for venous malformations using polidocanol under fluoroscopy.
Mimura H,Kanazawa S,Yasui K,Fujiwara H
Acta Medica Okayama , 2003,
Abstract: This retrospective study evaluated the safety and efficacy of using polidocanol with X-ray fluoroscopy for percutaneous sclerotherapy of venous malformations of the limbs, head, and neck. The subjects were 16 of 18 patients who presented to our department with venous malformations. Two patients were excluded because they were unlikely to benefit from the treatment. Of the 16 included in the study, 1 could not be treated because of inaccessibility, and another was lost to follow-up. Among the 14 cases that we were able to follow-up, 11 cases had had pain as their primary symptom. Following treatment, this symptom remained unchanged in 1 patient, was improved in 4, and had disappeared in 6; however, there was a recurrence of pain for 3 of these patients. Two patients had sought treatment for cosmetic purposes; following treatment, the lesion disappeared in one and showed a significant reduction in the other. The remaining patient presented with a primary symptom of mouth bleeding, which disappeared following treatment. There were no critical complications. Percutaneous sclerotherapy of venous malformations using polidocanol is safe and effective, and permits repeat treatments. The efficacy is especially good for resolving pain, and complications are minor. It is desirable to use fluoroscopy for these procedures
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