A Bilateral Dispensing Clinical Trial of an Sapphire Lens Against Senofilcon A Toric for Astigmatism Lens

This is an interventional treatment trial for Astigmatism Read More

Inclusion Criteria:

• A person is eligible for inclusion in the study if they:

  1. Are at least 18 years of age and have full legal capacity to volunteer;
  2. Have read and signed an information consent letter;
  3. Are willing and able to follow instructions and maintain the appointment schedule;
  4. Are an adapted soft contact lens wearer;

  5. Require spectacle lens powers in both eyes;

     1. Sphere: between -1.75 to -6.00 diopters and
     2. Astigmatism: between -1.00 to -2.25 and
     3. Axis: 180 ± 20 degrees
  6. Are willing to wear contact lenses in both eyes;
  7. Have manifest refraction visual acuities (VA) equal to or better than logMAR (log of the minimum angle of resolution) equivalent of 20/25 in each eye;
  8. To be eligible for lens dispensing, the subject must have VA of logMAR equivalent of 20/30 or better in each eye with the study lenses and the investigator must judge the fit including toric orientation as acceptable.

Exclusion Criteria:

• A person will be excluded from the study if they:

  1. Are participating in any concurrent clinical or research study;
  2. Have any known active* ocular disease and/or infection;
  3. Have a systemic condition that in the opinion of the investigator may affect a study outcome variable;
  4. Are using any systemic or topical medications that in the opinion of the investigator may affect a study outcome variable;
  5. Have known sensitivity to the diagnostic pharmaceuticals to be used in the study;
  6. Are pregnant, lactating or planning a pregnancy at the time of enrolment (by verbal confirmation at the screening visit);
  7. Are aphakic;
  8. Have undergone refractive error surgery;