The Colts promoted Eldrenkamp to the 53-man roster Saturday.
Eldrenkamp has spent the entire season on the Colts' practice squad, and he'll fill into a reserve role with the active roster moving forward.
Eldrenkamp (eye) started at left guard in Saturday's preseason game against the Bears.
Eldrenkamp missed the previous game due to the eye issue, but he returned to play 42 offensive snaps Saturday.
Eldrenkamp was ruled out for Saturday's preseason game against the Bears due to an eye injury, Joel A. Erickson of The Indianapolis Star reports.
No word on the specifics of the injury or when it occurred. Eldrenkamp is looking to provide depth at guard for the Colts.