OCT imaging may be recommended when the optic nerve looks unusual on exam, to help determine whether there is thinning

https://retinaloctinsights715.halcyonledger.com/posts/what-do-my-oct-results-mean-questions-to-ask-at-your-appointment

OCT imaging may be recommended when the optic nerve looks unusual on exam, to help determine whether there is thinning, swelling, or injury affecting vision.