Contact Lenses

May 2019 Contact Lenses

Teaching Contact Lenses in a Spectacle Lens World

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.