Im Dong-Hyun — South Korean Athlete born on May 12, 1986,

Im Dong-Hyun (Korean: 임동현; is a South Korean archer. He competes for the South Korean national team and is a former world number one. He has 20/200 vision in his left eye and 20/100 vision in his right eye, meaning he needs to be 10 times closer to see objects clearly, with his left eye, compared to someone with perfect vision... (wikipedia)

Archery requires very sensitive muscles.
Archery is not a sport for everyone. The equipment costs a lot, and it is not easy for everyone to find a place to play. It is perhaps similar to golf, but of course there are more golf courses than archery fields.
If I couldn't see the colors, now that would be a problem.
When I look down the range at the target all I can do is try to distinguish between the different colors.
I used to play football at school, and I enjoyed really physical sports, but I now try to avoid any sports that might build up different muscles. That might have a negative impact on my archery.