Comparative Evaluation of Corneal Staining With Balafilcon A Lenses and Two Multi-Purpose Solutions

Inclusion Criteria:

- were at least 18 years old;

- were experienced contact lens wearers;

- were correctable to at least 20/40 or better in both eyes with contact lenses;

- were in good general health, with healthy eyes (other than requiring vision
correction);

- had not worn lenses for at least 12 hours before each baseline visit;

- had a corneal staining score no greater than Grade 1 in either eye at time of
enrollment;

- had previously used an MPS or hydrogen peroxide solution successfully.

Exclusion Criteria:

- had a confirmed diagnosis of Sjögren's syndrome or other condition that results in a
chronic and/or pathologic dry eye condition;

- required concurrent ocular medication or have used ocular medication within 24 hours
of entering the study;

- had a known sensitivity or intolerance to any MPS, study products or ingredient(s);

- were currently participating in any other clinical study;

- had a condition or are in a situation that, in the investigator's opinion, may put
them at significant risk, confound the study results, or interfere significantly with
their participation in the study.