、。
Side effects include vision impairment.
Literal
Side-effect [as-としては], vision-disorder [subject-が] exists [polite-ます].
Medical warning boilerplate. 副作用 ('side effect') and 視力障害 ('vision impairment') are standard medical terms. ~としては ('as for X, regarding X') singles out a category to comment on — a genre convention in medical and technical writing, typically paired with the existence verb ある. The whole [X]としては[Y]があります pattern is the standard medical-descriptive frame for 'as for X, there exists Y.'