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Corneal injury due to plastic bullet from a toy gun Hirofumi Ohkubo 1 , Toshiki Kubota 1 , Katsuzo Segawa 1 1Dept. of Ophthalmol, Sch of Med Shinshu Univ pp.689-692
Published Date 1987/6/15
DOI https://doi.org/10.11477/mf.1410210078
  • Abstract
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An 18-year-old male was hit by a plastic bullet, shot from an air-powered toy gun 20 m away, in his right cornea. The corneal lesion showed a ring-shaped epithelial defect of 4 mm in diameter with an intact central area of 2 mm in diameter. The involved eye also showed hyphema, goniodialysis, mydriasis and sluggish light reflex. The corneal lesion healed 4 days later.

We applied similar gun shots to in situ rabbit eyes and enucleated canine eyes. We could produce cor-neal lesions similar to the observed clinical case butfailed to induce other intraocular lesions. The dif-ference seemed to be due to fragility of hyman eyes as compared to animal ones.

Concerning the ring-shaped corneal lesion, the outer border of the ring seemed to form during the compression period, to be followed by formation of the inner border. The diameter of the inner border of the ring became smaller parallel with the dis-tance between the cornea and the gun, as the shorter distance would result in higher intraocular pressure at the moment of impact.

Rinsho Ganka (Jpn J Clin Ophthalmol) 41(6) : 689-692, 1987


Copyright © 1987, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1308 印刷版ISSN 0370-5579 医学書院

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