研究者業績

岩瀬 雄仁

イワセ タケヒト  (Takehito Iwase)

基本情報

所属
千葉大学 医学部附属病院眼科 助教
学位
医学博士(2020年3月 千葉大学)

研究者番号
60867638
J-GLOBAL ID
202201014963143500
researchmap会員ID
R000032736

論文

 16
  • Tomoaki Tatsumi, Tomomi Kaiho, Takehito Iwase, Gen Miura, Daisuke Shimizu, Tomohiro Niizawa, Yoshihito Ozawa, Miyuki Arai, Toshiyuki Oshitari, Yoko Takatsuna, Takayuki Baba
    Medicina (Kaunas, Lithuania) 60(5) 2024年4月28日  
    Background and Objectives: Faricimab is a vascular endothelial growth factor A and angiopoietin-2 bispecific antibody. It is a novel therapeutic approach distinct from previous anti-vascular endothelial growth factor agents. This study aimed to evaluate the efficacy of switching from aflibercept to faricimab in the treatment of diabetic macular edema (DME) refractory to aflibercept, with a specific focus on the resolution of macular edema. Materials and Methods: The medical records of 29 eyes of 21 patients with DME that were refractory to intravitreal injections of aflibercept (IVAs) and who had completed the clinical follow-up of at least four intravitreal injections of faricimab (IVFs) were reviewed. The central retinal thickness (CRT), best-corrected visual acuity (BCVA), and the mean period (weeks) until the next injection were measured after the second-to-last IVA, first-to-last IVA, last IVA, and first to fourth IVFs following the transition to IVF. Results: The mean time from the first IVF to the assessment of effectiveness was significantly shorter than the time to the last IVA; however, no significant difference was found in the time from the second, third, and fourth IVFs to the assessment. The mean CRTs after the first and second IVFs were not significantly different from the CRT after the last IVA, but the mean CRT after the third and fourth IVFs was significantly thinner than that after the last IVA (p = 0.0025 and p = 0.0076, respectively). The mean BCVAs after the third and fourth IVFs significantly improved compared with that after the last IVA (p = 0.0050 and p = 0.0052, respectively). Conclusions: When switching the treatment to IVF for eyes with IVA-resistant DME, better treatment outcomes are achieved if IVF is performed three or more times.
  • 齋藤 裕也, 馬場 隆之, 岩瀬 雄仁, 新沢 知広, 横内 裕敬, 窪田 真理子, 北橋 正康, 山本 修一
    眼科臨床紀要 14(11) 777-777 2021年11月  
  • Masato Kakisu, Takayuki Baba, Tomoaki Tatsumi, Takehito Iwase, Tomohiro Nizawa, Gen Miura, Shuichi Yamamoto
    Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie 259(10) 3003-3009 2021年10月  
    PURPOSE: To determine the difference between the attempted and the achieved postoperative refractive error after sutureless intrascleral fixation of the haptics of an implanted intraocular lens (IOL). PATIENTS AND METHODS: This was a retrospective study of the medical charts of patients who had undergone sutureless intrascleral fixation of an IOL. The IOLs were fixed by inserting the haptics into scleral tunnels with or without flanges. The differences between the attempted and achieved postoperative refractive error (spherical equivalent) were determined. The relationships between the surgical options and the differences of the refractive error and degree of astigmatism were also determined. RESULTS: Two hundred and twenty-three eyes were studied. There was a myopic shift of - 0.38 ± 1.13 diopters (D). The mean of the differences between the achieved postoperative and the attempted refractive error was 0.89 ± 0.79 D. The achieved refractive error was significantly correlated with the attempted refractive error (P < 0.001, R2 = 0.631). The surgical procedures selected were not significantly associated with the differences between the attempted and achieved refractive error. The size of sclerocorneal incision and presence of sutures were significantly associated with the final degree of astigmatism (P = 0.006 and 0.008, respectively). CONCLUSIONS: The postoperative refractive error was significantly correlated with the attempted refractive error after intrascleral fixation of an IOL. The wound construction was associated with the postoperative degree of astigmatism.
  • 馬場 隆之, 三浦 玄, 岩瀬 雄仁, 辰巳 智章, 山本 修一
    眼科臨床紀要 14(9) 612-612 2021年9月  
  • Takehito Iwase, Takayuki Baba, Yuya Saito, Tomohiro Nizawa, Hirotaka Yokouchi, Mariko Kubota-Taniai, Masayasu Kitahashi, Shuichi Yamamoto
    International ophthalmology 41(5) 1835-1844 2021年5月  
    PURPOSE: To report the outcomes of pars plana vitrectomy in cases with breakthrough vitreous hemorrhage (VH) secondary to exudative age-related macular degeneration (AMD) and polypoidal choroidal vasculopathy. We also investigated the relationship between the preoperative b-mode ultrasonographic findings and the postoperative visual acuity to determine if the ultrasonographic findings can predict the surgical outcome after pars plana vitrectomy. METHODS: This was a retrospective, interventional, case series. Twenty eyes of 20 patients were studied. The associations between the pre- and intraoperative factors and the final best-corrected visual acuity (BCVA) were determined. Recombinant tissue-plasminogen activator (tPA) was used in cases with massive hemorrhagic retinal detachment. RESULTS: Ten eyes with polypoidal choroidal vasculopathy (PCV), two eyes with choroidal neovascularization (CNV), and eight eyes with an unknown type of AMD were studied. The mean BCVA was 0.73 ± 0.57 logarithm of the minimum angle of resolution (logMAR) units before developing the VH, 2.25 ± 0.45 logMAR units before the surgery, and 1.52 ± 0.87 logMAR units after the surgery. The BCVA improved significantly after the surgery (P = 0.004) but was significantly worse than that before developing the VH (P = 0.012). The cases of PCV had better final BCVA than cases of CNV (P = 0.043, Mann-Whitney test). The preoperative presence of a subretinal elevation at the macula detected by ultrasonography was significantly associated with a poorer final BCVA (P = 0.031). CONCLUSIONS: Vitrectomy significantly improved visual function in the eyes with VH associated with exudative AMD. The eyes with PCV and no macular subretinal elevation on ultrasonography had a better visual prognosis.
  • Masato Kakisu, Takayuki Baba, Takehito Iwase, Hirotaka Yokouchi, Shuichi Yamamoto
    European journal of ophthalmology 32(5) 11206721211008038-11206721211008038 2021年4月7日  
    PURPOSE: To determine whether there is a significant correlation between the retinal sensitivity and the integrity of the ellipsoid zone (EZ) of the photoreceptors in eyes with myopic chorioretinal atrophy (CRA). We also determined the significance of the correlation between the retinal sensitivity and the retinal and choroidal thicknesses. METHODS: The medical records of 10 eyes of six subjects with myopic CRA were reviewed. The integrity of the EZ was determined in the spectral-domain optical coherence tomographic (OCT) images at 37 points of six scans corresponding to the locations where the retinal sensitivities were measured by MP-3 microperimetry. The mesopic retinal sensitivities were determined within the central 16°. The significance of the correlations between the integrity of the EZ and the mesopic retinal sensitivities was determined. The relationships between the retinal and choroidal thickness and the retinal sensitivity were also determined. RESULTS: The average age of the patients was 70.0 ± 6.7 years, and the average axial length of the eye was 29.2 mm. The mesopic sensitivities at the points where the EZ was present were significantly higher than those where the EZ was absent (p < 0.01). The mesopic sensitivity was significantly correlated with the retinal thickness (p < 0.01, r = 0.30) and the choroidal thickness (p < 0.01, r = 0.23). CONCLUSIONS: The significant correlation between the mesopic retinal sensitivity and the integrity of the EZ indicates that the mesopic sensitivities can be used to assess the integrity of the photoreceptors in eyes with myopic CRA.
  • 柿栖 將人, 馬場 隆之, 辰巳 智章, 岩瀬 雄仁, 三浦 玄, 山本 修一
    日本眼科学会雑誌 125(臨増) 221-221 2021年3月  
  • Gen Miura, Takayuki Baba, Tomoaki Tatsumi, Takehito Iwase, Hirotaka Yokouchi, Shuichi Yamamoto
    Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie 259(3) 593-599 2021年3月  
    PURPOSE: To compare the outcomes of vitrectomy with removal of an idiopathic epiretinal membrane (ERM) in the myopic eyes with long axial length (AL) to that in the eyes with normal AL. METHODS: This was a retrospective, observational, case-control study. Fifty-six eyes of 56 patients with an idiopathic ERM were studied. Twenty-eight of these eyes had an axial length longer than 26.0 mm (Group A), and the other 28 eyes had axial lengths < 26.0 mm (Group B). The age and visual acuity of the two groups were not significantly different. All subjects were treated by vitrectomy and peeling of the ERM with a 25- or 27-gauge system. The postoperative best-corrected visual acuity (BCVA) and optical coherence tomographic findings were determined at 3 and 6 months postoperatively. RESULTS: The mean BCVA improved from 0.35 ± 0.25 to 0.15 ± 0.25 logMAR units in the eyes with the long AL and from 0.35 ± 0.25 to 0.10 ± 0.21 logMAR units in the eyes with normal AL at 6 months postoperatively (both P < 0.001). The postoperative BCVA was not significantly different between the two groups at 6 months (P = 0.221). The central macula was thinner in the eyes of Group A than Group B (P < 0.001). The restorations of the ellipsoid zone and the external limiting membrane were observed in both groups, but the interdigitation zone was less frequently restored in Group A (P < 0.001). CONCLUSIONS: Vitrectomy with the removal of the epiretinal membrane is effective in attaining a good BCVA even in the myopic eyes with long AL.
  • Takehito Iwase, Takayuki Baba, Masato Kakisu, Hirotaka Yokouchi, Shuichi Yamamoto
    Ophthalmologica. Journal international d'ophtalmologie. International journal of ophthalmology. Zeitschrift fur Augenheilkunde 244(2) 110-117 2021年  
    INTRODUCTION: To compare the morphological and visual outcomes after pars plana vitrectomy (PPV) with internal limiting membrane (ILM) peeling and flap removal to that with flap insertion in eyes with myopic macular-hole retinal detachment (MHRD). METHODS: Forty-six eyes of 45 patients with MHRD were studied. Eighteen eyes were treated by PPV with ILM peeling and flap removal and 28 eyes by flap insertion, respectively. The baseline characteristics and postoperative findings were compared between the 2 groups. RESULTS: The average age of the cases was 70.0 ± 8.5 years. The best-corrected visual acuity (BCVA) improved, from 1.51 ± 0.14 to 1.31 ± 0.20 logMAR units in the flap removal group, and from 1.20 ± 0.10 to 0.88 ± 0.10 logMAR units in the flap insertion group (p = 0.049). A significantly larger number of MHs were closed in the flap insertion group (96 vs. 50% in the removed group; p < 0.001). Restoration of the ellipsoid zone (EZ) and external limiting membrane (ELM) was also better in the flap insertion group than in the flap removal group (EZ 14 vs. 6%, p = 0.003; ELM 36 vs. 6%, p < 0.001). DISCUSSION: The technique of ILM peeling with flap insertion is more effective in closing the MH, and results in better BCVA and better restoration of the outer retinal microstructures than flap removal.
  • Tomohiro Nizawa, Masayasu Kitahashi, Takayuki Baba, Takehito Iwase, Mariko Kubota-Taniai, Yoko Hattori, Yuki Shiko, Yohei Kawasaki, Takayuki Iwase, Takatoshi Sato, Shoko Ogawa, Takeshi Sugawara, Shuichi Yamamoto
    Ophthalmologica. Journal international d'ophtalmologie. International journal of ophthalmology. Zeitschrift fur Augenheilkunde 244(4) 347-360 2021年  
    PURPOSE: We aim to determine the effects of intravitreal aflibercept (IVA) on the mean sensitivity (MS) of the central retina, best-corrected visual acuity (BCVA), and central foveal thickness (CFT) in eyes with neovascular age-related macular degeneration (nAMD) with or without polypoidal choroidal vasculopathy (PCV). METHODS: This was a prospective, interventional study. All eyes were treatment-naive with nAMD with or without PCV. Each eye received 3 monthly IVA injections followed by an IVA injection every 2 months for 12 months. The primary outcome was the change in the MS within the central 2°. The secondary outcomes were the changes in BCVA, CFT, greatest linear dimension (GLD), and percentage of eyes with a dry macula. RESULTS: Thirty-seven eyes of 37 patients were studied. A significant improvement of the MS (dB) was observed +4.9 ± 4.6 dB (mean ± standard deviation) at 3 M (p < 0.001), +5.5 ± 4.9 dB at 6 (p < 0.001), and +7.0 ± 3.4 dB at 12 M (p < 0.001) compared to the baseline in all eyes. The MS of the eyes with non-PCV was not significantly different from that of eyes with PCV (p = 1.00, 1.00, 1.00, and 0.76 at baseline, 3, 6, and 12 M, respectively). The MS of 11 patients whose BCVA remained unchanged was significantly improved by +6.5 ± 2.8 dB at 3 M (p < 0.001), +6.1 ± 4.3 dB at 6 M (p < 0.001), and +6.4 ± 4.8 dB at 12 M (p = 0.003) compared to the baseline. The mean BCVA was significantly improved from the baseline to 3 M (p < 0.001), 6 M (p = 0.027), and 12 M (p = 0.003) in all eyes. The BCVA was improved or maintained in 97% of the patients at 12 M. The mean CFT and GLD were significantly reduced at 12 M (p < 0.001). Twenty-two eyes (71%) had a dry macula at 12 M. CONCLUSIONS: IVA administered by a fixed dosing regimen led to significant improvements of the central MS, BCVA, and macular morphology at 1 year in eyes with nAMD with or without PCV. These results were not significantly different between eyes with non-PCV and with PCV. The improvements of the MS of the retina of the central 2° in a subgroup whose BCVA remained unchanged through the 12-month experimental period was also significant. We conclude that the MS of the central 2° might be a better marker than the BCVA in determining the effectiveness of IVA treatments and might be helpful in determining early effects on the retina before BCVA changes can be detected.
  • Gen Miura, Takayuki Baba, Takehito Iwase, Hisao Ohde, Atsuhiro Kanda, Wataru Saito, Susumu Ishida, Shuichi Yamamoto
    BMC ophthalmology 20(1) 132-132 2020年4月6日  
    BACKGROUND: Evidence-based criteria for the treatment of autoimmune retinopathy (AIR) have not been established. The pathology and clinical features of each antibody causing AIR, and its long-term course are still undetermined. We report our findings in a case of non-paraneoplastic AIR (npAIR) that developed in the fellow eye 10 years after the onset in the first eye. CASE PRESENTATION: Our patient had photophobia in both eyes and a rapidly progressing visual field defect in his right eye at the initial examination. He was diagnosed with non-paraneoplastic AIR based on the clinical findings and immunoblot analyses for anti-retinal antibodies, and he was treated with steroids. Ten years later, a visual field defect developed in the fellow eye, and a diagnosis of npAIR was made. Immunoblot analyses were positive for anti-α-enolase antibodies. He was treated with steroids, immunosuppressants, and plasma exchange. However, the response to the treatment was poor and both eyes eventually became blind. CONCLUSIONS: As best we know, this is the first case report of npAIR that developed in the fellow eye over 10 years after the development in the first eye. Long-term follow-up and a search for tumor lesions are necessary in cases of npAIR. Further understanding of the long-term course of AIR can contribute to an understanding of the pathology and treatment of npAIR.
  • Takehito Iwase, Hirotaka Yokouchi, Masayasu Kitahashi, Mariko Kubota-Taniai, Takayuki Baba, Shuichi Yamamoto
    BioMed research international 2020 3190136-3190136 2020年  
    The purpose of this study was to evaluate the long-term effects of half-time photodynamic therapy (PDT) on the retinal sensitivity in eyes with chronic central serous chorioretinopathy (CSC). Twenty-two eyes of 22 patients with chronic CSC were studied. PDT was applied with full-dose verteporfin and half-time laser duration. The best-corrected visual acuity (BCVA) and retinal sensitivity in the central 2 and 10 degrees were evaluated at the baseline, and at 12 and 24 months after the half-time PDT. The retinal sensitivity was determined by Macular Integrity Assessment microperimetry (MAIA, Centervue, Padova, Italy). The results showed that the mean retinal sensitivities in the central 2 and 10 degrees were significantly improved at 12 months (25.6 ± 2.79 dB, median; 26.11 dB, 25.6 ± 2.25 dB, median; 25.65 dB, respectively; P < 0.001) and at 24 months (26.3 ± 2.62 dB, median; 27.38 dB, 26.6 ± 2.21 dB, median; 27.45 dB, respectively; P < 0.001) after the treatment compared to that at the baseline (19.2 ± 3.93 dB, median; 19.34 dB, 20.9 ± 2.92 dB, median; 20.9 dB, respectively). The BCVA was also significantly improved from 0.18 ± 0.19 median; 0.15 logarithm of the minimum angle of resolution (logMAR) units at the baseline to 0.07 ± 0.15 median; 0 logMAR units at 12 months (P < 0.001) and to 0.049 ± 0.16 median; -0.039 logMAR units at 24 months (P < 0.001). We conclude that half-time PDT results in a significant improvement of the mean central retinal sensitivity for at least 24 months in eyes with chronic CSC. Thus, half-time PDT is beneficial in resolving chronic CSC for a relatively long period.
  • Tomoaki Tatsumi, Takayuki Baba, Takehito Iwase, Tomohiro Nizawa, Gen Miura, Hirotaka Yokouchi, Shuichi Yamamoto
    Journal of ophthalmology 2020 6637143-6637143 2020年  
    Purpose: To investigate the outcomes of pars plana vitrectomy (PPV) combined with scleral buckling (SB) in treating eyes with an early recurrent rhegmatogenous retinal detachment (rRRD). Methods: This was a retrospective, interventional case series of 21 eyes with an early rRRD treated by PPV combined with SB. The significance of the associations between the variants before the surgeries and the final best-corrected visual acuity (BCVA) was determined. Results: The average age of the patients was 61.0 ± 9.6 years. A retinal reattachment was observed in 20 of 21 eyes (95.2%) after a single reoperation. The BCVA was 0.91 ± 0.90 logMAR units before the initial surgery and 0.94 ± 0.94 logMAR units before the reoperations, and it improved significantly to 0.49 ± 0.50 logMAR units after the reoperation (P = 0.016, P = 0.002, respectively). The preoperative BCVA was significantly correlated with the final BCVA (P = 0.043, r = 0.445 before the primary surgery; P < 0.001, r = 0.885 before reoperation). Conclusions: The reattachment of an early recurrent retinal detachment by PPV with SB is effective.
  • Takehito Iwase, Hirotaka Yokouchi, Sonoko Misawa, Toshiyuki Oshitari, Takayuki Baba, Satoshi Kuwabara, Shuichi Yamamoto
    Neuro-ophthalmology (Aeolus Press) 42(1) 25-30 2018年2月  
    The authors present findings in a 39-year-old man with polyneuropathy, organomegaly, endocrinopathy, monoclonal gammopathy, and skin changes (POEMS) syndrome with bilateral optic disc oedema. He was successfully treated with bortezomib and dexamethasone followed by autologous peripheral blood stem cell transplantation. The peripapillary retinal thickness was reduced in the optical coherence tomographic (OCT) images along with a decrease of the serum vascular endothelial growth factor (VEGF) levels. The authors recommend OCT to monitor the changes in the signs of POEMS syndrome after treatments.
  • 岩瀬 雄仁, 横内 裕敬, 馬場 隆之, 忍足 俊幸, 山本 修一
    日本眼科学会雑誌 119(4) 304-304 2015年4月  
  • 岩瀬 雄仁, 横内 裕敬, 馬場 隆之, 忍足 俊幸, 山本 修一
    神経眼科 31(増補1) 74-74 2014年11月  

MISC

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共同研究・競争的資金等の研究課題

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