When can I exercise after an eye injection?

This is the biggest difference between an injection and eye surgery. After cataract or retina surgery there are lifting and bending rules. After an intravitreal injection there are not. The ASRS says there are usually no restrictions apart from avoiding potential contamination of the eye that day, and the NEI says most people can go back to their normal activities right after the treatment.

In practice most people take it easy for the rest of injection day simply because a gritty, watery eye is unpleasant to work out with, then go back to their normal routine the next day. Walking, cycling on a stationary bike, weights and cardio are not restricted by the injection itself.

Two sensible cautions on injection day. Sweat running into the eye is a contamination route, so use a headband or towel and do not wipe the treated eye with dirty hands. And avoid contact sports or anything where you could take a hit to the face while the eye surface is still healing. If your retina specialist gave you different instructions, or if you also had other eye treatment the same day, follow theirs.