What is the validity of what is being circulated about the appearance of the Antichrist (Al-Masih Ad-Dajjal) in Pakistan, a man with one eye, knowing that the Prophet's (peace and blessings be upon him) description of him is "one-eyed in his right eye"?

The circulating image of the Dajjal is incorrect. The Dajjal is chained on an island and is immense in creation. His established descriptions in the hadiths are that he is blind in his right eye, as if it were a floating grape, and his other eye is obliterated, neither protruding nor sunken. As for other characteristics published about him (such as his hand not burning in fire, or his eating glass, or his drinking from seawater, or his personal guardian being a black cat), these are not from the Sharia. Muslims must refer to people of knowledge to verify the authenticity of published religious information.