Treating CS gas injuries to the eye

doi:10.1136/bmj.311.7009.871

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Peter J Gray

Senior registrar Department of Ophthalmology, St Thomas's Hospital, London SE1 7EH

Exposure at close range is particularly dangerous

EDITOR,--Jean-Paul Yih's editorial on injuries to the eye caused by O-chlorobenzylidene malono-nitrile (CS) gas, or tear gas, draws attention to the short term effects of the gas on the eye and suggests that such injuries may well be a future problem as individual police officers in Britain will soon be carrying pocket aerosols of CS gas.1 Yih implies that the ocular toxicity of CS gas is …