THE EFFECTS OF SMOKELESS TOBACCO (ORAL SNUFF) ON DYNAMIC VISUAL-ACUITY

The effects of the use of smokeless tobacco (oral snuff) on observers' ability to resolve moving targets were assessed under four levels of target velocity for both light and heavy tobacco users among college s tudents. Each observer was tested in several sessions, half immediatel y following the use of tobacco and half with no preceding tobacco use. No differences were found across the two types of sessions for any of the velocity conditions. The results are discussed in terms of the pr actical consequences of nicotine nystagmus reported by previous invest igators.