Bizarre situation this morning. Saw a young man walking in with a blind walking stick (apologies in advance for not knowing the proper term for it). Generally, when you see a blind passenger, you dash up from any seat you're sitting in. I was standing today but I noticed people were not getting up for him. Then, I had a good look at him. He looked like he can see! His eyes were focused, he knew where to look for potential seats and spaces, he also took next steps without hesitation. Meanwhile, he was swinging around his stick from left to right very quickly, suddenly points at a seat by the door with the stick, at eye-level to the passenger seated, and says, "Can I take this seat?" He was looking right at her when he spoke.
I don't know what to think. I'm sure he needed the walking stick for one reason or another but in all ways possible, he looked like he could see, and see well.
Once he was seated, he went to sleep. So I wasn't really able to examine him some more.