Brief
          Course Description
Basic
          Contact Lens Design
This
          course starts with a discussion of the various contact lens designs
          to include scleral, corneal and semi-scleral lenses. Some basic terminology
          is covered and the various materials from which contact lenses can be
          made are surveyed and placed into historical perspective. The uses,
          advantages and disadvantages of the lens materials are discussed. The
          parts of a contact lens will be covered to include optic zone, peripheral
          curve, base curve, junction zone, and radius of curvature. The need
          for diopter to millimeter conversion is presented and a chart is included.
          It also discusses the relationship between sagitta depth and fit. Changing
          sagitta depth by manipulating lens diameter and/or base curve radius
          is presented. The course concludes with a brief glossary of the terms
          covered 
