At the Paralympic Games there are various classifications of athletes with a visual impairment.
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] 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.
Alpine skiing: The start must have an adequate space for the guide.
[5] Cycling: Pilot Equestrian: Football 5-a-side: Triathlon: