A character who is a chemist or pharmacist might be really proud of the Visine they've developed or are studying. This could show their dedication to their work and their sense of pride in creating something useful. But if something goes wrong with the Visine, like a recall due to unforeseen side effects, it could shatter their confidence and lead to a downward spiral in their development, causing them to question their abilities and worth.
If a character is a hypochondriac, constantly using Visine for minor eye irritations that may or may not exist. This over - use could be a sign of their obsessive - compulsive nature and could be part of their character arc where they either learn to deal with their hypochondria or it gets worse and affects their relationships.
In a story about a young artist, Visine could be a small but important part of their daily routine. They use it when their eyes get tired from staring at their canvas for long hours. This simple act of using Visine could symbolize their commitment to their art. As the story progresses, if they start to neglect using Visine because they're so caught up in their work, it could be a sign of their growing obsession or burnout, which are important aspects of their character development.