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Comparison of magnitude and summated vector mean of surgically induced astigmatism vector according to incision site after phakic intraocular lens implantation

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Eye and Vision 2021年第1期8卷 317-323页

作者： kazutaka kamiya Wakako Ando Masahide Takahashi Nobuyuki Shoji Visual Physiology School of Allied Health SciencesKitasato University1‑15‑1 KitasatoMinamiSagamiharaKanagawa 252‑0373Japan Department of Ophthalmology School of MedicineKitasato UniversitySagamiharaJapan

Background:To compare the arithmetic mean(M-SIA)and the summated vector mean of surgically induced astigmatism(SVM-SIA)according to the incision site after phakic intraocular lens(Visian implantable collamer lens(ICL),STAAR Surgical)***:This study comprised 121 eyes of 121 consecutive patients undergoing ICL surgery through a 3.0-mm temporal or superior clear corneal *** magnitude and the axis of corneal astigmatism preoperatively and 3 months postoperatively were measured using an automated *** M-SIA and the SVM-SIA were determined according to the incision ***:The magnitude of corneal astigmatism significantly increased from 1.23±0.59 D preoperatively to 1.46±0.72 D postoperatively in the temporal incision group(Wilcoxon signed-rank test,P<0.001),but it significantly decreased from 1.09±0.36 D preoperatively to 0.86±0.41 D postoperatively in the superior incision group(P<0.001).The M-SIA was 0.48±0.30 D,and the SVM-SIA was 0.23±0.52 D at a meridian of 82°in the temporal incision *** M-SIA was 0.57±0.30 D,and the SVM-SIA was 0.47±0.45 D at a meridian of 1°in the superior incision ***:ICL implantation induces the M-SIA by approximately 0.5 D,but the SVM-SIA decreased to 50%and 80%of the M-SIA in magnitude through temporal and superior incisions,*** direction of the SVM-SIA showed a tendency toward corneal flattening to the incisional *** should be noted that the M-SIA is somewhat different from the SVM-SIA according to the incision site.

关键词： Surgically induced astigmatism Corneal astigmatism Mean Summated vector mean Centroid Vector analysis Temporal incision Superior incision ICL implantation

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Factors influencing subjective symptoms in dry eye disease

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International Journal of Ophthalmology(English edition) 2018年第12期11卷 1926-1931页

作者： Hidenaga Kobashi kazutaka kamiya Takehiko Sambe Ryutaro Nakagawa Department of Ophthalmology University of Kitasato School of MedicineKanagawa 160-8582Japan Schepens Eye Research Institute Massachusetts Eye and Ear InfirmaryDepartment of OphthalmologyHarvard Medical SchoolBoston 02115MassachusettsUSA Department of Pharmacology Showa University school of MedicineTokyo 152-8555Japan Brigham and Women's Hospital Harvard Medical School Boston 02115MassachusettsUSA Social Epidemiology and Chair Department of Social and Behavioral Sciences Harvard University T.H.Chan School of Public Health Boston 02115MassachusettsUSA Tama University Institute of Health Care solution Tokyo 206-0022Japan Department of Histology and Pathophysiology Tokyo medical university School of MedicineTokyo 160-0023Japan

AIM: To retrospectively investigate the association between dry eye symptoms and clinical or in vivo confocal microscopy parameters in patients with dry eye disease(DED), and to compare these parameters between eyes with DED and normal ***: This retrospective, cross-sectional, controlled study comprised 25 consecutive patients with non-Sj?gren dry eye disease and age-and sex-matched 25 healthy subjects. Each patient underwent a complete examination of the ocular surface in the following order: tear osmolarity measurements, InflammaDry test, tear break-up time, corneal fluorescein staining, Schirmer I test, subjective symptoms questionnaire using the dry eye-related qualityof-life score(DEQS), and in vivo confocal microscopy analysis of the central cornea. Beck depression inventory(BDI) as depressive scale and history of medications and smoking were also evaluated. Stepwise multiple regression analysis was used to assess the factors affecting the ***: In univariate analysis, DEQS was associated with tear break-up time(ρ=-0.48, P=0.01), oral medications, such as hypotensive drug(ρ=0.56, P=0.004) and antidepressant(ρ=0.57, P=0.003), and BDI(ρ=0.61, P=0.001) in patients with DED. In multiple regression analysis, explanatory variables relevant to the DEQS were the anti-depressant medications(P=0.04, partial regression coefficient B=21.04) and BDI(P=0.02, B=0.76, adjusted R2=0.54) in these patients. CONCLUSION: Our study shows a significant association between depression and dry eye symptoms. It suggests that dry eye symptoms associate with higher depressive symptoms and its medications, although our patients were not followed longitudinally.

关键词： dry eye disease in vivo confocal microscopy dry eye symptoms depression

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Surgically induced astigmatismCorneal astigmatismMeanSummated vector meanCentroidVector analysisTemporal incisionSuperior incisionICL implantation

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Eye and Vision 2023年第6期9卷 1-7页

作者： kazutaka kamiya Wakako Ando Masahide Takahashi Nobuyuki Shoji Visual Physiology School of Allied Health SciencesKitasato University1-15-1 KitasatoMinamiSagamiharaKanagawa252-0373Japan Department of Ophthalmology School of MedicineKitasato UniversitySagamiharaJapan

BackgroundTo compare the arithmetic mean (M-SIA) and the summated vector mean of surgically induced astigmatism (SVM-SIA) according to the incision site after phakic intraocular lens (Visian implantable collamer lens (ICL), STAAR Surgical) *** study comprised 121 eyes of 121 consecutive patients undergoing ICL surgery through a 3.0-mm temporal or superior clear corneal incision. The magnitude and the axis of corneal astigmatism preoperatively and 3 months postoperatively were measured using an automated keratometer. The M-SIA and the SVM-SIA were determined according to the incision *** magnitude of corneal astigmatism significantly increased from 1.23 ± 0.59 D preoperatively to 1.46 ± 0.72 D postoperatively in the temporal incision group (Wilcoxon signed-rank test, P < 0.001), but it significantly decreased from 1.09 ± 0.36 D preoperatively to 0.86 ± 0.41 D postoperatively in the superior incision group (P < 0.001). The M-SIA was 0.48 ± 0.30 D, and the SVM-SIA was 0.23 ± 0.52 D at a meridian of 82° in the temporal incision group. The M-SIA was 0.57 ± 0.30 D, and the SVM-SIA was 0.47 ± 0.45 D at a meridian of 1° in the superior incision *** implantation induces the M-SIA by approximately 0.5 D, but the SVM-SIA decreased to 50% and 80% of the M-SIA in magnitude through temporal and superior incisions, respectively. The direction of the SVM-SIA showed a tendency toward corneal flattening to the incisional site. It should be noted that the M-SIA is somewhat different from the SVM-SIA according to the incision site.

关键词： Surgically induced astigmatism Corneal astigmatism Mean Summated vector mean Centroid Vector analysis Temporal incision Superior incision ICL implantation

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