How to keep your eyes healthy when using decorative lenses<br>Use only fitted and prescription decorative lenses. All contact lenses are considered medical devices. For this reason, it's important to get your decorative lenses from your eye doctor.

Based on that paragraph can we conclude that this sentence is true?
Using decorative lenses you bought from an unlicensed back-alley doctor will keep your eyes healthy.

Options are: - Yes; - It's impossible to say; - No;
No