Effect of oxime HI-6 to rabbit miosis induced by the topical sarin and VX administration is presented. It has been found that effects of both toxins are better antagonized by parenteral than by topical HI-6 administration. The sarin antagonizing effect was found more effective. It has been also confirmed that there was no significant difference concerning the oxime HI-6 effect when topically administered either as 2.5% hypertonic or isotonic solution. Opposite to PAM-2, HI-6 effect was better in parenteral and topical administration of isotonic solutions, and less effective in local administration of hypertonic solutions.