Probably yes. Most drugs have side effects and statin can't be excluded. There is study showing that too much statin can have negative effect on eye health. You'd better stop taking statin for several days and consult your doctor.
Yes. Stain will cause eye disorders. However, these eye disorders can completely disappear when you stop taking statins drugs. If you find your vision getting worse, you'd better not take them and should go to see a doctor to have a check.