37 year old female is experiencing vision problems. She feels like she can only see objects that are directly in front of her and is not able to see anything that is off to the side. She has been experiencing headaches, she has a history of migraine headaches.

Eye floaters may be caused by the normal aging process or as a result from other diseases or conditions: Age-related eye changes. As you age, the vitreous, or jelly-like substance filling your eyeballs and helping them to maintain their round shape, changes.
Or she may have glaucoma
Or a traumatic brain injury those are some possibilities

The romaine lettuce is contaminated

The 'hallucinations' which are caused by some of these kinds of drugs may make you see, hear, smell, taste or feel things that are not real.