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Arch Ophthalmol. 1999;117:835.

	Since this article does not have an abstract, we have provided the first 81 words of the full text and any section headings.

OLIVER here reiterates what he has insisted upon on various occasions, that in testing for color-blindness in railway employees, the near test by wools is not sufficient. The tests should be made at a distance and by the means and under the circumstances of atmosphere and general surroundings in which the lights are usually observed by the person under examination. All employees who are suspected of intoxication from tobacco or alcohol should be subjected to frequent examinations.

Reference: Arch Ophthalmol. 1897;26:450.