Thor got his eye back in Avengers: Infinity War. Just before the battle with the great Thanos, Rocket Racoon gifted him with an eye. ... Avengers: Infinity Wars opens with the Asgardians suffering defeat at the hands of Thanos. Thanos killed Loki and regained the Tesseract, which the latter had kept custody of.

Does Thor ever get his eye back?

For the remainder of Thor: Ragnarok, his eye is just simply gone. He eventually dons a sick eye patch, which honestly makes him look even more like an Asgardian snack. Luckily, he gets his eye back in Avengers: Infinity War.

What was the point of Thor losing his eye?

During the journey, Thor explained that he was determined to kill Thanos in revenge for the massacre of his people. In order to help him, Rocket gave Thor the eye he had stolen in order to replace the one Thor had lost to Hela.