Lately i've been noticing yellowing in my eyes as well as double vision randomly (i need to close one eye to read something). ?

Seek medical help: Yellowing of the eyes is never normal and often signifies to us that something may be going on with your liver- also known as jaundice. Sudden and random double vision is also not a normal occurrence. I am honestly concerned about the use of amphetamine as you list here, as this could possibly cause both of these symptoms. How long have you been taking it? I highly encourage a visit to your doctor