Accidents caused by kickback from chain saws produce facial injuries with consistent features. These features include oblique, destructive, ragged lacerations of the left side of the face. Although eyelid damage may be severe, damage to the globe itself is minimal. An analysis of 10 such accidents revealed this consistent pattern. Of this group, eight injuries were left-sided and six involved mainly the eyelid and adjacent structures. Only one patient was left with permanent damage to the globe and with slightly impaired (20/60) vision. The upper lid was always more severely damaged than the lower. The author discusses the merits and disadvantages of protective devices for both operator and machine.
链锯反冲造成的事故会导致具有一致特征的面部损伤。这些特征包括面部左侧的斜向、破坏性、参差不齐的撕裂伤。虽然眼睑损伤可能很严重，但眼球本身的损伤很小。对10起此类事故的分析揭示了这种一致的模式。在这组病例中，8处损伤在左侧，6处主要累及眼睑及相邻结构。只有一名患者的眼球受到永久性损伤，视力略有受损（20/60）。上眼睑总是比下眼睑受损更严重。作者讨论了针对操作人员和机器的防护装置的优缺点。
