Shigeto Tanaka

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PURPOSE To elucidate Japanese trends for perioperative disinfection and antibiotic selection during cataract surgeries. METHODS Perioperative iodine use and antibiotic prophylaxis for cataract surgery were surveyed in eight regions in Japan by mail or through interviews from February 1 to March 1, 2014. RESULTS We surveyed 572 surgeons, of whom 386(More)
PURPOSE To determine the risk factors that induce an elevation of intraocular pressure (IOP) after trans-Tenon retrobulbar injections of triamcinolone acetonide. METHODS We retrospectively reviewed the medical records of 49 consecutive patients (49 eyes) with choroidal neovascularization or diffuse diabetic macular edema who had received one trans-Tenon(More)
— This paper proposes a simple method to realize an over-sampling pipelined analog-to-digital converter (ADC) with 1.5-bit bit-blocks. The ADC performs conversion by permuting internal capacitors in alternate clocks of the upper 1.5-bit bit-blocks in the analog domain, then averaging the data from bit-blocks in the digital domain. The behavioral simulation(More)
SUMMARY The possibility of realizing a CMOS pipelined current-mode AD converter (ADC) for video applications has been examined. Two times the input current is obtained at the output of a bit-block of a pipelined ADC by subtracting the negative output current from the positive output current in the pseudo-differential configuration. Subtraction of the(More)
SUMMARY This paper proposes a very simple method of eliminating the gain and offset errors caused by mismatches of elements, such as capacitors, for a high-speed CMOS pipelined ADC with a 1.5-bit architecture. The gain and offset errors in a bit-block due to capacitor mismatch are analog-to-digital (AD) converted without correcting errors, but by exchanging(More)
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