The Ohio State College of Optometry looked at a range of factors comparing contact lenses to determine if they are safely interchangeable.
What did they find? Physiological reactions to contact lens parameters differed, based on the brand of contact lens used.
Take a deep dive into the study, and learn why contact lenses are not interchangeable. Download the PDF here.
For further reading, learn more about loopholes that can contribute to illegal contact lens substitution. Download the PDF here.