仮性同色表の自動提示装置に関する研究—1．SPP-1による試み

An automatic display system for pseudoisochromatic plates.:Report 1. Standard Pseudoisochromatic Plates Part 1 (SPP-1)

　仮性同色表は便利なものであるが，使い力に関しては一般に正確でないことが多い．照明，視角，視距離，提示時間などに関して正確にできるような装置を作り，同時に全ての操作を自動化し，結果についても自動記録できるような装置を試作した．これによって231名を検査したところ，1人1分で検査できた．検査に熟練を必要としない，便利な器械である．なお，さらに改良すべき点があることもわかった．

Pseudoisochromatic plates are a simple and useful system to detect congenital color defectives. It is desired that the plates be presented in a standardiz-ed manner to ensure accuracy of the results. We developed a new, automatically driven display sys-tem for the pseudoisochromatic plates. Each plate is attached on a rotating disc and is illuminated by neutral light of constant intensity. Each plate is presented through a window for 3 seconds to the test subject at a distance of 75cm. Answers and diagnosis are printed out by a built-in microcom-puter.

This display system was used incorporating the Standard Pseudoisochromatic Plates Part-1 (SPP-1). Each examinee could be test in less than one minute. The system did not require particular skill of the examiner.