I personally wouldn’t call most rabbits’ eyesight “horrible”; it’s oriented toward spotting predators coming from a long distance/above them, and for seeing potential food sources (rabbits’ color vision is skewed toward blue/green). That being said, they don’t have good vision up close because their eyes are set in the sides of their heads, so that they don’t stereoscopic vision like humans. Therefore, they have to turn their head to get a good view of what they’re looking at, and they rely much more on their senses of smell and hearing, which, particularly smell, are better than humans’.
And THAT having been said, some rabbits – specifically albinos (red/pink-eyed whites) – such as my Fernando, really don’t have good vision because of the lack of pigmentation in their eyes. They don’t handle bright light well so one needs to be careful about that; it’s one reason why I set up their bunny condo so that the lower deck, with the litterbox and food dishes, is always in the shade, and that the window their condo is located under always has its blinds drawn. Fortunately, rabbits are crepuscular so Fernando doesn’t have to deal with bright direct sunlight during his most active hours.