Should I perform a Jackson cross-cylinder and/or Vectographic conversion for resultant cylinder?
Some manufacturers have attempted to simplify the fitting process by offering “computer assisted” conversion to calculate cross-cylinder problems. These devices are currently being challenged in terms of their accuracy. Modern soft toric contact lenses such as ACUVUE® TORIC, have proven to be so stable in rotation, as well as in optical quality, that a simple adjustment in rotation will generally eliminate the need for additional calculative conversion.
