There is... a lot to take into just those simple words. Things for Ignis to patiently chew on, piece together with everything else he's managed to pick up from the others that they likely don't even know they've let slip.

The most blatant meaning explains so much of Cor's current condition.

Ignis takes in a slow breath, letting it settle in his chest. Back in Insomnia, this would be cause for so much concern - worry that whatever it was which had harmed Cor was still a present and nearby threat, the military concerns, all of that. But here, he reminds himself, whatever it is would still be back on Eos. They can just focus on the most immediate things.

For that, Ignis meets his eyes squarely. "Noctis is in good health," he tells him, quiet and sincere. "As are Gladio and Prompto."

And with that said-

"Now, allow yourself to get looked at. If your injuries and old age have made it difficult to recall or understand the full extent, then I am certain that the machine here will be able to do that for you. Afterwards, I can give you a proper update on the situation here. If it would reassure you, I can step away for a moment to give you some measure of privacy."