The sighted guides are such a close and essential part of the competition, that the athlete with a visual impairment and the guide are considered a team, and both athletes are medal candidates.[1]
Winter
At the Winter Paralympics there are three classifications of athletes with a visual impairment:
A sighted guide is required for B1 and B2, and optional for B3.
Nordic skiing:
The guide can lead, follow, or ski next to the athlete with a visual impairment. The guide assists with voice instruction only. No physical contact allowed.