Contact Lens Terms and Conditions The 'Free Contact Lens Trial' is not available for all lenses. Made to order lenses, including RGPs and specialist soft lens designs are not included. Patients are entitled to one free trial a year only The 'Free Contact Lens Trial' includes all appointments involved in the initial assessment and the lenses required for this period of time. The initial assessment will take between 5 days and 1 month, depending on lens type and appointment availability. Following the initial assessment lenses must be worn for a suitable period of time to ensure that eye health is maintained. This period of time will be 3 months, although this may vary with lens type and design. Contact lens prescriptions can only be issued following this 3 month period. Contact Lenses for wear during this 3 month period are not included within the 'Free Contact Lens Trial'.