Eye tolerability assessments
blurred vision, itching, pain, stinging/burning, dryness
To evaluate eye tolerability of study treatments, seven symptoms (stinging/burning, itching, blurred vision, sandiness/grittiness, dryness, light sensitivity, and pain or soreness score) were evaluated at a grade from 0 to 3 (0, no symptom; 1, mild; 2, moderate; and 3, severe) after the instillation of study treatments.