The speaker is worn out by looking. "Up to my eyes with seeing" plays on the familiar phrase "up to here," as if sight itself has piled up to eye level and the speaker is nearly drowning in it. Nothing in the poem says exactly what has been seen, but the title, "Seen enough," makes the exhaustion plain. The second stanza hints at where it might come from: the speaker asks the night to "be the news now." News is what we take in daily, often bad and often relentless. Instead of more headlines, the speaker wants darkness to fill that role.
The request is oddly formal. "Petition" sounds like a plea to an authority, which makes the speaker seem both weary and a little helpless. The mood is quiet and tired, but also tender. Night offers rest, silence and a break from images. The poem is short, and its brevity feels like a deep breath, a wish to stop taking things in for a while.