PROBLEM TO BE SOLVED: To provide an easy-to-operate, single-use angle gauge that can be rotated on an eyeball easily without damaging the eyeball and its surface such as cornea and conjunctiva and does not obstruct an operation field of view.SOLUTION: A angle gauge is made of a transparent resin material in a ring shape as a whole. The angle gauge includes scales 2 showing angles, angle value indication 3, and one or more handles 4 on one surface of the ring shape. The angle gauge does not obstruct an operation field of view because of transparency. It is also stabled just by being placed on an eyeball, can be rotated smoothly, and facilitates marking of an astigmatic axis outside the ring.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2017,JPO&INPIT【課題】角膜や結膜等の眼球表面を傷つけることや眼球自体にダメージを及ぼすことがなく、眼球上で容易に回転移動させることが可能な、手術視野を妨げることがない使い勝手の良い単回使用の角度ゲージを提供する。【解決手段】全体の形状がリング形状であり、リング形状の一方の表面上に、角度を示す目盛り2、角度数値の表示3、及び1個以上の摘み部4を有し、かつ透明樹脂材料からなる。透明なので手術視野を妨げることなく、眼球上に乗せただけで安定し回転もスムーズに行うことができ、乱視軸のリング外側へのマーキングも容易にできる。【選択図】図2
