To provide an ophthalmologic instrument having a simple structure, low introduction cost, and capable of observing the inside of an ear with a clear image and having high hygiene reliability. An imaging tube includes an imaging lens that images the inside of the ear at an end portion thereof and an illumination unit that is provided adjacent to the imaging lens and illuminates the inside of the ear. A cap portion 230 having a penetrating portion that penetrates the tube 210 is provided, and a protective tube 212 that protects the entire circumference of the imaging tube 210 is attached to the imaging tube 210, and an end of the protective tube 212 is attached to the penetrating portion of the cap portion 230. A holding portion 235 is formed to hold the portion between the image pickup tube 210 and the cap portion 230 is rotated in a first direction along the circumferential direction of the main body portion 220. Moves in the opposite direction and is fixed to the tip, and when rotated in the second direction opposite to the first direction, it moves in the protruding direction of the imaging tube 210 and is removed from the tip and held in the holding portion. Tube 2 Moving 2 in the protruding direction of the image pickup tube 210. [Selection] Figure 1【課題】簡単な構造で導入コストが安価であり、鮮明な画像で耳の内部を観察でき、衛生面での信頼性が高い検視具を提供する。【解決手段】撮像管２１０はその先端部に耳の内部を撮像する撮像レンズと撮像レンズに隣接して設けられ耳の内部を照明する照明部とを備え、本体部２２０の先端部には撮像管２１０を貫通させる貫通部を有するキャップ部２３０が備えられ、撮像管２１０には撮像管２１０の全周を保護する保護チューブ２１２が装着され、キャップ部２３０の貫通部には保護チューブ２１２の端部を撮像管２１０との間で保持する保持部２３５が形成され、キャップ部２３０は、本体部２２０の周方向に沿う第１方向に回転させると撮像管２１０の突出方向（矢印Ｐ方向）とは反対の方向に移動して先端部に固定され、第１方向とは反対の第２方向に回転させると撮像管２１０の突出方向に移動して先端部から外れ保持部で保持していた保護チューブ２１２を撮像管２１０の突出方向に移動させる。【選択図】図１
