Does Tetralysal 300mg Affect Vision?

Hello, my dermotologist has written me Tetralysal 300mg. From 5th March till 18th April I used it and had no side effects.But now, I have the side effect on my eyes, when I tuen my face to right, i do not see clear with two eyes. If I use my eyes one by one, it is clear.It is strange, isn t it? Will this effect stay longer? Thank you in advance