More than half of guide dog users in Japan said Tokyo is not adequately prepared to welcome visitors from overseas who rely on guide dogs when it hosts the Olympic and Paralympic Games in 2020, a survey finds.

The largest segment of the respondents, 50.6 percent, chose "not really ready," while 17.6 percent answered "not ready at all," according to the survey by The Eye Mate Inc., a guide dog training organization. It showed 14.1 percent said Tokyo is "almost ready, but not fully."

Takao Shioya, who heads the organization, noted that not many guide dog users abroad are expected to come to Tokyo for the games, but that it is important to establish an environment friendly for them in time.