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Toshiyuki Oshitari, Sakiko Nonomura, Miyuki Arai, Yoko Takatsuna, Eiju Sato, Takayuki Baba, Shuichi Yamamoto Department of Ophthalmology and Visual Science, Graduate School of Medicine, Chiba University, Chuo-ku, Chiba, Japan Purpose: To compare the effects of sub-Tenon's capsule triamcinolone acetonide (STTA) injection to that of STTA injection combined with microaneurysm photocoagulation (MAPC; STTA + MAPC) on eyes with diabetic macular edema (DME). Patients and methods: The medical records of 138 eyes of 138 patients with DME treated by either STTA or STTA + MAPC were reviewed. The degree of DME was determined by the optical coherence tomographic features: patients with serous retinal detachment (SRD+; 38 eyes) and patients without SRD (non-SRD; 100 eyes). The central macular thickness (CMT) and the best-corrected visual acuity (BCVA) were measured periodically for 6 months after the treatments. Results: The BCVA was significantly improved in the non-SRD group after STTA + MAPC. The CMT was significantly improved in all groups and improved considerably more in the non-SRD group than in the SRD+ group after STTA + MAPC. Conclusion: Our findings indicate that MAPC has an additive effect in the non-SRD type. Keywords: diabetic macular edema, sub-Tenon's triamcinolone acetonide injection, microaneurysm photocoagulation, best-corrected visual acuity, central macular thickness

Sakiko Nonomura, Toshiyuki Oshitari, Miyuki Arai, Eiju Sato, Yoko Takatsuna, Takayuki Baba, Shuichi YamamotoDepartment of Ophthalmology and Visual Science, Chiba University Graduate School of Medicine, Chiba, JapanPurpose: To compare the effect of posterior sub-Tenon’s capsule triamcinolone acetonide (STTA) injection to that of pars plana vitrectomy (PPV) for diabetic macular edema (DME).Patients and methods: The medical records of 50 patients (52 eyes) with DME were reviewed. Twenty-six eyes underwent STTA (20 mg) and the other 26 eyes underwent vitrectomy combined with cataract surgery. The central macular thickness (CMT), measured by optical coherence tomography, and best-corrected visual acuity (BCVA) were determined before and 1, 3, and 6 months after treatment.Results: The differences in the BCVA and the CMT between the STTA group and the PPV group were not significant before or at any time after the treatment. In both the STTA and PPV groups, there were significant differences between the pre-treatment CMT and BCVA at any time after treatment.Conclusion: We recommend STTA injection for the treatment of DME.Keywords: diabetic macular edema, posterior sub-Tenon’s capsule triamcinolone acetonide injection, pars plana vitrectomy, central macular thickness

Photothermal deflection spectroscopy has been applied to optical absorption measurements in As[sub 2]S[sub 3], Se, and As–S glasses. The spectroscopic method is demonstrated to be suitable for evaluation of small absorption in thin samples, while its accuracy is affected by light scattering. For As[sub 2]S[sub 3], as-evaporated films give higher residual absorption than those of the bulk. In the As–S system, As[sub 2]S[sub 3] shows the most prominent weak absorption tail, and As[sub 17]S[sub 83] exhibits a peculiar spectrum. The origins of these features are discussed. © 2002 American Institute of Physics. [ABSTRACT FROM AUTHOR]

Photo thermal deflection spectroscopy is applied to optical absorption measurements in As2S3, Se, and As-S glasses. As2S3 shows the most prominent weak absorption tail, and As17S83 exhibits a peculiar spectrum.