On November 10, BuzzFeed posted a poll: How Gross is Your Contact Lens Hygiene? The responses from more than 50,000 contact lens wearers were terrifying. Because numbers speak louder than words in this case, here are the results.
Contact Lens Theory can be a challenging subject to teach and to absorb because most students are more familiar with spectacle lenses as they are initially introduced to refractive errors, how light bends through different mediums, and how spectacle lenses correct vision. It may be easier to understand the concept of visual correction when one can actually hold the lens in hand, see the shape of the lens either thick in the center or at the edges, and diagram the light rays entering and converging or diverging through the material.