My jacksonii jlhas a swelling in front of his eye, he can't hunt wel either, as they use both eyes to aim if one eye is not in his usual position aim will be off. I had my Jax on medication without luck, I'm bringing him in for surgery tomorrow.
So in short, this isn't normal, you should take him to a vet to have it checked out, he can't look sraight forward to well like that.
Next time you buy of someone check their husbandry, if it's not sounding right to you don't purchase. It's noble to offer a better home or 'rescue' but sadly it will more often than not bring a lot of vet bills down the road.