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本稿では,無線バーコードリーダーを用いたレスポンスアナライザの開発について述べる。ピア・インストラクションのツールとしてよく用いられるレスポンスアナライザは,簡便に使えるものとはいいがたい。そこで,無線バーコードリーダーを用いてコードを送信し,それをExcelで受けて集計することで,レスポンスアナライザとして活用できるシステムを開発した。このシステムでは,バーコードを記載した紙のカードを受講生に持たせることで,即時のレスポンスを収集し,提示・保存できる。このシステムはネット接続やサーバ,受講生側端末を必要とせず,また安価である。本システムに対する受講生の評価は好意的である。受講生は本システムについて,入力や修正は容易であり,本システムを使うことが楽しいと感じていることが明らかとなった。これらのことより,無線バーコードリーダーをレスポンスアナライザとして使うことの有効性が示された。, This paper describes the development of a response analyzer using a wireless barcode reader. Response analyzers, often used as peer instruction tools, are hard to say that they are easy to use. Therefore, I constructed a system that can be used as response analyzer using wireless barcode reader. Using them, immediate responses can be collected, presented, and stored. It became clear that students felt that the system was easy to input, and felt that it was interesting to check their answers. These results demonstrate the effectiveness of using wireless barcode reader as response analyzer.

PURPOSE The objective of this study was to investigate and compare corneal thicknesses of prematurely born and full-term early school-aged children, who were grouped into birth weight categories according to gestational age. METHODS This cross-sectional study included 136 school-aged white children. They were grouped as premature (born before 37 weeks of gestation) and full term (born at or after 37 weeks of gestation). These 2 groups were further divided into birth weight groups according to gestational age as small, appropriate, and large for gestational age. Central corneal thickness (CCT) was measured by ultrasound pachymetry. The intraocular pressures of both groups were measured by a Goldmann applanation tonometer. RESULTS The study included right eyes of 136 children. There were 53 girls and 83 boys whose mean age was 6.5 ± 0.9 years (range: 5-8 yrs). Mean pachymetry of the small for gestational age group (526.8 ± 37.9 μm) in prematurely born children was significantly lower than that of appropriate for gestational age (554.6 ± 34.2 μm) (P = 0.039, mean difference 27.8, 95% confidence interval, 1.1-54.5). When prematurely born and full-term children are compared, the mean pachymetric values of the term children (574.5 ± 37.8 μm) were found to be significantly higher than those of the prematurely born children (545.4 ± 35.6 μm) (P ≤ 0.001). CONCLUSIONS Birth parameters affect CCT in early school-aged children. Prematurely born, small for gestational age children have lesser CCT. This should be kept in mind at their follow-ups.