PROBLEM TO BE SOLVED: To allow a vision test to be easily conducted at home with a certain degree of accuracy by using a telephone device.SOLUTION: The telephone device includes a main phone with a line connection part, and a cordless handset wirelessly connectable to the main phone. The main phone is provided with a mark display part for showing a test mark for vision test, and the cordless handset is provided with an identification part through which a user can input information of a test mark the user has recognized. The device further includes a mark determination part for determining whether the identification result of the test mark identification part agrees with the test mark shown in the mark display part.COPYRIGHT: (C)2013,JPO&INPIT【課題】電話装置を用いて家庭内でも気軽に視力の検査をある程度の正確性をもって行えることを目的とする。【解決手段】回線接続部を備えた親機と、この親機と無線接続可能な子機と、を備える電話装置であって、視力検査のための検査マークを表示するマーク表示部を親機が備え、認識した検査マークの情報を入力できる識別部を子機が備えており、マーク表示部で表示された検査マークと、検査マーク識別部の識別結果との正誤を判定できるマーク判定部を設けておく。【選択図】図4
