I remember this book, but not the title or author?

I read this probably 5 or 6 years ago, while I was in high school. It's a book for teens; had a writing style very similar to that of Lois Lowry's "The Giver".

The main premise of the book is a group of people who left Earth and colonized a new planet to create a society of blind people. The main character is a boy about 15 years old who suddenly starts being able to see, and he discovers all these bad things about his society. He's trying to track down, toward the end, what happened to his girlfriend/best friend.

Does anybody know what book this is?